carboxypeptidase B2 isoform 2 preproprotein [Homo sapiens]
Protein Classification
M14 family carboxypeptidase B2( domain architecture ID 10491434)
M14 family carboxypeptidase B2 only cleaves the basic residues lysine or arginine produced and secreted by the liver as the inactive precursor, procarboxypeptidase U or PCPB2, commonly referred to as thrombin-activatable fibrinolysis inhibitor (TAFI)
List of domain hits
| Name | Accession | Description | Interval | E-value | |||||
| M14_CPB2 | cd06246 | Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase B2 subgroup; Peptidase M14 ... |
119-383 | 0e+00 | |||||
Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase B2 subgroup; Peptidase M14 Carboxypeptidase (CP) B2 (CPB2, also known as plasma carboxypeptidase B, carboxypeptidase U, and CPU), belongs to the carboxpeptidase A/B subfamily of the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding CPs which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. CPB2 enzyme displays B-like activity; it only cleaves the basic residues lysine or arginine. It is produced and secreted by the liver as the inactive precursor, procarboxypeptidase U or PCPB2, commonly referred to as thrombin-activatable fibrinolysis inhibitor (TAFI). It circulates in plasma as a zymogen bound to plasminogen, and the active enzyme, TAFIa, inhibits fibrinolysis. It is highly regulated, increased TAFI concentrations are thought to increase the risk of thrombosis and coronary artery disease by reducing fibrinolytic activity while low TAFI levels have been correlated with chronic liver disease. : Pssm-ID: 349465 [Multi-domain] Cd Length: 300 Bit Score: 510.50 E-value: 0e+00
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| Propep_M14 | pfam02244 | Carboxypeptidase activation peptide; Carboxypeptidases are found in abundance in pancreatic ... |
33-105 | 3.22e-16 | |||||
Carboxypeptidase activation peptide; Carboxypeptidases are found in abundance in pancreatic secretions. The pro-segment moiety (activation peptide) accounts for up to a quarter of the total length of the peptidase, and is responsible for modulation of folding and activity of the pro-enzyme. : Pssm-ID: 460505 Cd Length: 73 Bit Score: 72.63 E-value: 3.22e-16
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| Name | Accession | Description | Interval | E-value | |||||
| M14_CPB2 | cd06246 | Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase B2 subgroup; Peptidase M14 ... |
119-383 | 0e+00 | |||||
Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase B2 subgroup; Peptidase M14 Carboxypeptidase (CP) B2 (CPB2, also known as plasma carboxypeptidase B, carboxypeptidase U, and CPU), belongs to the carboxpeptidase A/B subfamily of the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding CPs which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. CPB2 enzyme displays B-like activity; it only cleaves the basic residues lysine or arginine. It is produced and secreted by the liver as the inactive precursor, procarboxypeptidase U or PCPB2, commonly referred to as thrombin-activatable fibrinolysis inhibitor (TAFI). It circulates in plasma as a zymogen bound to plasminogen, and the active enzyme, TAFIa, inhibits fibrinolysis. It is highly regulated, increased TAFI concentrations are thought to increase the risk of thrombosis and coronary artery disease by reducing fibrinolytic activity while low TAFI levels have been correlated with chronic liver disease. Pssm-ID: 349465 [Multi-domain] Cd Length: 300 Bit Score: 510.50 E-value: 0e+00
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| Peptidase_M14 | pfam00246 | Zinc carboxypeptidase; |
129-374 | 7.52e-106 | |||||
Zinc carboxypeptidase; Pssm-ID: 459730 [Multi-domain] Cd Length: 287 Bit Score: 313.08 E-value: 7.52e-106
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| Zn_pept | smart00631 | Zn_pept domain; |
123-368 | 9.18e-102 | |||||
Zn_pept domain; Pssm-ID: 214748 [Multi-domain] Cd Length: 277 Bit Score: 302.33 E-value: 9.18e-102
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| MpaA | COG2866 | Murein tripeptide amidase MpaA [Cell wall/membrane/envelope biogenesis]; |
117-346 | 7.79e-23 | |||||
Murein tripeptide amidase MpaA [Cell wall/membrane/envelope biogenesis]; Pssm-ID: 442113 [Multi-domain] Cd Length: 337 Bit Score: 98.22 E-value: 7.79e-23
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| Propep_M14 | pfam02244 | Carboxypeptidase activation peptide; Carboxypeptidases are found in abundance in pancreatic ... |
33-105 | 3.22e-16 | |||||
Carboxypeptidase activation peptide; Carboxypeptidases are found in abundance in pancreatic secretions. The pro-segment moiety (activation peptide) accounts for up to a quarter of the total length of the peptidase, and is responsible for modulation of folding and activity of the pro-enzyme. Pssm-ID: 460505 Cd Length: 73 Bit Score: 72.63 E-value: 3.22e-16
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| Name | Accession | Description | Interval | E-value | ||||||
| M14_CPB2 | cd06246 | Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase B2 subgroup; Peptidase M14 ... |
119-383 | 0e+00 | ||||||
Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase B2 subgroup; Peptidase M14 Carboxypeptidase (CP) B2 (CPB2, also known as plasma carboxypeptidase B, carboxypeptidase U, and CPU), belongs to the carboxpeptidase A/B subfamily of the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding CPs which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. CPB2 enzyme displays B-like activity; it only cleaves the basic residues lysine or arginine. It is produced and secreted by the liver as the inactive precursor, procarboxypeptidase U or PCPB2, commonly referred to as thrombin-activatable fibrinolysis inhibitor (TAFI). It circulates in plasma as a zymogen bound to plasminogen, and the active enzyme, TAFIa, inhibits fibrinolysis. It is highly regulated, increased TAFI concentrations are thought to increase the risk of thrombosis and coronary artery disease by reducing fibrinolytic activity while low TAFI levels have been correlated with chronic liver disease. Pssm-ID: 349465 [Multi-domain] Cd Length: 300 Bit Score: 510.50 E-value: 0e+00
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| M14_CPB | cd03871 | Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase B subgroup; Peptidase M14 ... |
120-383 | 1.71e-122 | ||||||
Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase B subgroup; Peptidase M14 Carboxypeptidase B (CPB) belongs to the carboxypeptidase A/B subfamily of the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding CPs which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. Carboxypeptidase B (CPB) enzymes only cleave the basic residues lysine or arginine. A/B subfamily enzymes are normally synthesized as inactive precursors containing preceding signal peptide, followed by a globular N-terminal pro-region linked to the enzyme; these proenzymes are called procarboxypeptidases. The procarboxypeptidase B (PCPB) is produced by the exocrine pancreas and stored as stable zymogen in the pancreatic granules until secretion into the digestive tract occurs. PCPB has been reported to be a good serum marker for the diagnosis of acute pancreatitis and graft rejection in pancreas transplant recipients. this subfamily also includes thrombin activatable fibrinolysis inhibitor (TAFIa), a carboxypeptidase that stabilizes fibrin clots by removing C-terminal arginines and lysines from partially degraded fibrin. Inhibition of TAFIa stimulates the degradation of fibrin clots and may help in prevention of thrombosis. Pssm-ID: 349443 [Multi-domain] Cd Length: 300 Bit Score: 355.99 E-value: 1.71e-122
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| M14_CP_A-B_like | cd03860 | Peptidase M14 carboxypeptidase subfamily A/B-like; The Peptidase M14 Carboxypeptidase (CP) A/B ... |
123-382 | 5.49e-118 | ||||||
Peptidase M14 carboxypeptidase subfamily A/B-like; The Peptidase M14 Carboxypeptidase (CP) A/B subfamily is one of two main M14 CP subfamilies defined by sequence and structural homology, the other being the N/E subfamily. CPs hydrolyze single, C-terminal amino acids from polypeptide chains. They have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. Enzymes belonging to the A/B subfamily are normally synthesized as inactive precursors containing preceding signal peptide, followed by a globular N-terminal pro-region linked to the enzyme; these proenzymes are called procarboxypeptidases. The A/B enzymes can be further divided based on their substrate specificity; Carboxypeptidase A-like (CPA-like) enzymes favor hydrophobic residues while carboxypeptidase B-like (CPB-like) enzymes only cleave the basic residues lysine or arginine. There are nine members in the A/B family: CPA1, CPA2, CPA3, CPA4, CPA5, CPA6, CPB, CPO and CPU. CPA1, CPA2 and CPB are produced by the pancreas. The A forms have slightly different specificities, with CPA1 preferring aliphatic and small aromatic residues, and CPA2 preferring the bulkier aromatic side chains. CPA3 is found in secretory granules of mast cells and functions in inflammatory processes. CPA4 is detected in hormone-regulated tissues, and is thought to play a role in prostate cancer. CPA5 is present in discrete regions of pituitary and other tissues, and cleaves aliphatic C-terminal residues. CPA6 is highly expressed in embryonic brain and optic muscle, suggesting that it may play a specific role in cell migration and axonal guidance. CPU (also called CPB2) is produced and secreted by the liver as the inactive precursor, PCPU, commonly referred to as thrombin-activatable fibrinolysis inhibitor (TAFI). Little is known about CPO but it has been suggested to have specificity for acidic residues. Pssm-ID: 349433 [Multi-domain] Cd Length: 300 Bit Score: 344.51 E-value: 5.49e-118
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| Peptidase_M14 | pfam00246 | Zinc carboxypeptidase; |
129-374 | 7.52e-106 | ||||||
Zinc carboxypeptidase; Pssm-ID: 459730 [Multi-domain] Cd Length: 287 Bit Score: 313.08 E-value: 7.52e-106
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| Zn_pept | smart00631 | Zn_pept domain; |
123-368 | 9.18e-102 | ||||||
Zn_pept domain; Pssm-ID: 214748 [Multi-domain] Cd Length: 277 Bit Score: 302.33 E-value: 9.18e-102
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| M14_CPO | cd06247 | Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase O subgroup; Peptidase M14 ... |
120-382 | 7.41e-98 | ||||||
Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase O subgroup; Peptidase M14 carboxypeptidase (CP) O (CPO, also known as metallocarboxypeptidase C; EC 3.4.17.) belongs to the carboxypeptidase A/B subfamily of the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding CPs which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. CPO has not been well characterized as yet, and little is known about it. Based on modeling studies, CPO has been suggested to have specificity for acidic residues rather than aliphatic/aromatic residues as in A-like enzymes or basic residues as in B-like enzymes. It remains to be demonstrated that CPO is functional as an MCP. Pssm-ID: 349466 [Multi-domain] Cd Length: 298 Bit Score: 293.29 E-value: 7.41e-98
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| M14_CPA6 | cd03872 | Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase A6 subgroup; ... |
123-384 | 2.16e-94 | ||||||
Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase A6 subgroup; Carboxypeptidase (CP) A6 (CPA6, also known as CPAH; EC 3.4.17.1), belongs to the carboxypeptidase A/B subfamily of the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding CPs which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. CPA6 prefers large hydrophobic C-terminal amino acids as well as histidine, while peptides with a penultimate glycine or proline are very poorly cleaved. Several neuropeptides are processed by CPA6, including Met- and Leu-enkephalin, angiotensin I, and neurotensin. CPA6 converts enkephalin and neurotensin into forms known to be inactive toward their receptors, but converts inactive angiotensin I into the biologically active angiotensin II. Thus, CPA6 plays a possible role in the regulation of neuropeptides in the extracellular environment within the olfactory bulb where it is highly expressed. It is also broadly expressed in embryonic tissue, being found in neuronal tissues, bone, skin as well as the lateral rectus eye muscle. A disruption in the CPA6 gene is linked to Duane syndrome, a defect in the abducens nerve/lateral rectus muscle connection. Pssm-ID: 349444 [Multi-domain] Cd Length: 300 Bit Score: 284.56 E-value: 2.16e-94
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| M14_CPA | cd03870 | Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase A subgroup; Peptidase M14 ... |
120-382 | 3.19e-94 | ||||||
Peptidase M14 carboxypeptidase subfamily A/B-like; Carboxypeptidase A subgroup; Peptidase M14 Carboxypeptidase (CP) A (CPA) belongs to the A/B subfamily of the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding CPs which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. CPA enzymes generally favor hydrophobic residues. A/B subfamily enzymes are normally synthesized as inactive precursors containing preceding signal peptide, followed by a globular N-terminal pro-region linked to the enzyme; these proenzymes are called procarboxypeptidases. The procarboxypeptidase A (PCPA) is produced by the exocrine pancreas and stored as a stable zymogen in the pancreatic granules until secretion into the digestive tract occurs. This subfamily includes CPA1, CPA2 and CPA4 forms. Within these A forms, there are slightly different specificities, with CPA1 preferring aliphatic and small aromatic residues, and CPA2 preferring the bulkier aromatic side chains. CPA4, detected in hormone-regulated tissues, is thought to play a role in prostate cancer. Pssm-ID: 349442 [Multi-domain] Cd Length: 301 Bit Score: 283.94 E-value: 3.19e-94
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| M14_CPT | cd03859 | Peptidase M14 Carboxypeptidase T subfamily; Peptidase M14-like domain of carboxypeptidase (CP) ... |
123-375 | 1.17e-57 | ||||||
Peptidase M14 Carboxypeptidase T subfamily; Peptidase M14-like domain of carboxypeptidase (CP) T (CPT), CPT belongs to the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding CPs which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. CPT has moderate similarity to CPA and CPB, and exhibits dual-substrate specificity by cleaving C-terminal hydrophobic amino acid residues like CPA and C-terminal positively charged residues like CPB. CPA and CPB are M14 family peptidases but do not belong to this CPT group. The substrate specificity difference between CPT and CPA and CPB is ascribed to a few amino acid substitutions at the substrate-binding pocket while the spatial organization of the binding site remains the same as in all Zn-CPs. CPT has increased thermal stability in presence of Ca2+ ions, and two disulfide bridges which give an additional stabilization factor. Pssm-ID: 349432 [Multi-domain] Cd Length: 292 Bit Score: 189.78 E-value: 1.17e-57
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| M14_CP_insect | cd06248 | Peptidase M14 carboxypeptidase subfamily A/B-like; This family includes peptidase M14 ... |
123-375 | 6.19e-56 | ||||||
Peptidase M14 carboxypeptidase subfamily A/B-like; This family includes peptidase M14 carboxypeptidases found specifically in insects, including B-type carboxypeptidase of H. zea (CPBHz, insect gut carboxypeptidase-3) that is insensitive to potato carboxypeptidase inhibitor (PCI) in corn earworm, and midgut procarboxypeptidase A (PCPAHa, insect gut carboxypeptidase-1) from Helicoverpa armigera larva, a devastating pest of crops. PCPAHa preferentially cleaves aliphatic and aromatic residues. The peptidase M14 Carboxypeptidase (CP) A/B subfamily is one of two main M14 CP subfamilies defined by sequence and structural homology, the other being the N/E subfamily. CPs hydrolyze single, C-terminal amino acids from polypeptide chains. They have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. Enzymes belonging to the A/B subfamily are normally synthesized as inactive precursors containing preceding signal peptide, followed by a globular N-terminal pro-region linked to the enzyme; these proenzymes are called procarboxypeptidases. The A/B enzymes can be further divided based on their substrate specificity; Carboxypeptidase A-like (CPA-like) enzymes favor hydrophobic residues while carboxypeptidase B-like (CPB-like) enzymes only cleave the basic residues lysine or arginine. There are nine members in the A/B family: CPA1, CPA2, CPA3, CPA4, CPA5, CPA6, CPB, CPO and CPU. CPA1, CPA2 and CPB are produced by the pancreas. The A forms have slightly different specificities, with CPA1 preferring aliphatic and small aromatic residues, and CPA2 preferring the bulkier aromatic side chains. CPA3 is found in secretory granules of mast cells and functions in inflammatory processes. CPA4 is detected in hormone-regulated tissues, and is thought to play a role in prostate cancer. CPA5 is present in discrete regions of pituitary and other tissues, and cleaves aliphatic C-terminal residues. CPA6 is highly expressed in embryonic brain and optic muscle, suggesting that it may play a specific role in cell migration and axonal guidance. CPU (also called CPB2) is produced and secreted by the liver as the inactive precursor, PCPU, commonly referred to as thrombin-activatable fibrinolysis inhibitor (TAFI). Little is known about CPO but it has been suggested to have specificity for acidic residues. Pssm-ID: 349467 [Multi-domain] Cd Length: 297 Bit Score: 185.35 E-value: 6.19e-56
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| Peptidase_M14_like | cd00596 | M14 family of metallocarboxypeptidases and related proteins; The M14 family of ... |
174-375 | 8.58e-37 | ||||||
M14 family of metallocarboxypeptidases and related proteins; The M14 family of metallocarboxypeptidases (MCPs), also known as funnelins, are zinc-binding carboxypeptidases (CPs) which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. Two major subfamilies of the M14 family, defined based on sequence and structural homology, are the A/B and N/E subfamilies. Enzymes belonging to the A/B subfamily are normally synthesized as inactive precursors containing preceding signal peptide, followed by an N-terminal pro-region linked to the enzyme; these proenzymes are called procarboxypeptidases. The A/B enzymes can be further divided based on their substrate specificity; Carboxypeptidase A-like (CPA-like) enzymes favor hydrophobic residues while carboxypeptidase B-like (CPB-like) enzymes only cleave the basic residues lysine or arginine. The A forms have slightly different specificities, with Carboxypeptidase A1 (CPA1) preferring aliphatic and small aromatic residues, and CPA2 preferring the bulky aromatic side chains. Enzymes belonging to the N/E subfamily enzymes are not produced as inactive precursors and instead rely on their substrate specificity and subcellular compartmentalization to prevent inappropriate cleavage. They contain an extra C-terminal transthyretin-like domain, thought to be involved in folding or formation of oligomers. MCPs can also be classified based on their involvement in specific physiological processes; the pancreatic MCPs participate only in alimentary digestion and include carboxypeptidase A and B (A/B subfamily), while others, namely regulatory MCPs or the N/E subfamily, are involved in more selective reactions, mainly in non-digestive tissues and fluids, acting on blood coagulation/fibrinolysis, inflammation and local anaphylaxis, pro-hormone and neuropeptide processing, cellular response and others. Another MCP subfamily, is that of succinylglutamate desuccinylase /aspartoacylase, which hydrolyzes N-acetyl-L-aspartate (NAA), and deficiency in which is the established cause of Canavan disease. Another subfamily (referred to as subfamily C) includes an exceptional type of activity in the MCP family, that of dipeptidyl-peptidase activity of gamma-glutamyl-(L)-meso-diaminopimelate peptidase I which is involved in bacterial cell wall metabolism. Pssm-ID: 349427 [Multi-domain] Cd Length: 216 Bit Score: 132.97 E-value: 8.58e-37
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| M14-CPA-like | cd06227 | Peptidase M14 carboxypeptidase A-like domain; uncharacterized subfamily; A functionally ... |
171-349 | 7.18e-27 | ||||||
Peptidase M14 carboxypeptidase A-like domain; uncharacterized subfamily; A functionally uncharacterized subgroup of the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding carboxypeptidases (CPs) which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. Two major subfamilies of the M14 family, defined based on sequence and structural homology, are the A/B and N/E subfamilies. Enzymes belonging to the A/B subfamily are normally synthesized as inactive precursors containing preceding signal peptide, followed by an N-terminal pro-region linked to the enzyme; these proenzymes are called procarboxypeptidases. The A/B enzymes can be further divided based on their substrate specificity; Carboxypeptidase A-like (CPA-like) enzymes favor hydrophobic residues while carboxypeptidase B-like (CPB-like) enzymes only cleave the basic residues lysine or arginine. The A forms have slightly different specificities, with Carboxypeptidase A1 (CPA1) preferring aliphatic and small aromatic residues, and CPA2 preferring the bulky aromatic side chains. Enzymes belonging to the N/E subfamily enzymes are not produced as inactive precursors and instead rely on their substrate specificity and subcellular compartmentalization to prevent inappropriate cleavages. They contain an extra C-terminal transthyretin-like domain, thought to be involved in folding or formation of oligomers. MCPs can also be classified based on their involvement in specific physiological processes; the pancreatic MCPs participate only in alimentary digestion and include carboxypeptidase A and B (A/B subfamily), while others, namely regulatory MCPs or the N/E subfamily, are involved in more selective reactions, mainly in non-digestive tissues and fluids, acting on blood coagulation/fibrinolysis, inflammation and local anaphylaxis, pro-hormone and neuropeptide processing, cellular response and others. Another MCP subfamily, is that of succinylglutamate desuccinylase /aspartoacylase, which hydrolyzes N-acetyl-L-aspartate (NAA), and deficiency in which is the established cause of Canavan disease. Another subfamily (referred to as subfamily C) includes an exceptional type of activity in the MCP family, that of dipeptidyl-peptidase activity of gamma-glutamyl-(L)-meso-diaminopimelate peptidase I which is involved in bacterial cell wall metabolism. Pssm-ID: 349446 [Multi-domain] Cd Length: 224 Bit Score: 106.59 E-value: 7.18e-27
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| MpaA | COG2866 | Murein tripeptide amidase MpaA [Cell wall/membrane/envelope biogenesis]; |
117-346 | 7.79e-23 | ||||||
Murein tripeptide amidase MpaA [Cell wall/membrane/envelope biogenesis]; Pssm-ID: 442113 [Multi-domain] Cd Length: 337 Bit Score: 98.22 E-value: 7.79e-23
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| M14_CPT_like | cd06226 | Peptidase M14-like domain of an uncharacterized group of Peptidase M14 Carboxypeptidase T (CPT) ... |
158-349 | 8.60e-23 | ||||||
Peptidase M14-like domain of an uncharacterized group of Peptidase M14 Carboxypeptidase T (CPT)-like proteins; Peptidase M14-like domain of an uncharacterized group of Peptidase M14 Carboxypeptidase T (CPT)-like proteins. This group belongs to the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding CPs which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. CPT exhibits dual-substrate specificity by cleaving C-terminal hydrophobic amino acid residues and C-terminal positively charged residues. However, CPT does not belong to this CPT-like group. Pssm-ID: 349445 [Multi-domain] Cd Length: 267 Bit Score: 96.37 E-value: 8.60e-23
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| M14-like | cd06905 | Peptidase M14-like domain; uncharacterized subfamily; A functionally uncharacterized subgroup ... |
120-349 | 2.12e-18 | ||||||
Peptidase M14-like domain; uncharacterized subfamily; A functionally uncharacterized subgroup of the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding carboxypeptidases (CPs) which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. Two major subfamilies of the M14 family, defined based on sequence and structural homology, are the A/B and N/E subfamilies. Enzymes belonging to the A/B subfamily are normally synthesized as inactive precursors containing preceding signal peptide, followed by an N-terminal pro-region linked to the enzyme; these proenzymes are called procarboxypeptidases. The A/B enzymes can be further divided based on their substrate specificity; Carboxypeptidase A-like (CPA-like) enzymes favor hydrophobic residues while carboxypeptidase B-like (CPB-like) enzymes only cleave the basic residues lysine or arginine. The A forms have slightly different specificities, with Carboxypeptidase A1 (CPA1) preferring aliphatic and small aromatic residues, and CPA2 preferring the bulky aromatic side chains. Enzymes belonging to the N/E subfamily enzymes are not produced as inactive precursors and instead rely on their substrate specificity and subcellular compartmentalization to prevent inappropriate cleavages. They contain an extra C-terminal transthyretin-like domain, thought to be involved in folding or formation of oligomers. MCPs can also be classified based on their involvement in specific physiological processes; the pancreatic MCPs participate only in alimentary digestion and include carboxypeptidase A and B (A/B subfamily), while others, namely regulatory MCPs or the N/E subfamily, are involved in more selective reactions, mainly in non-digestive tissues and fluids, acting on blood coagulation/fibrinolysis, inflammation and local anaphylaxis, pro-hormone and neuropeptide processing, cellular response and others. Another MCP subfamily, is that of succinylglutamate desuccinylase /aspartoacylase, which hydrolyzes N-acetyl-L-aspartate (NAA), and deficiency in which is the established cause of Canavan disease. Another subfamily (referred to as subfamily C) includes an exceptional type of activity in the MCP family, that of dipeptidyl-peptidase activity of gamma-glutamyl-(L)-meso-diaminopimelate peptidase I which is involved in bacterial cell wall metabolism. Pssm-ID: 349476 [Multi-domain] Cd Length: 359 Bit Score: 85.36 E-value: 2.12e-18
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| M14-like | cd06228 | Peptidase M14-like domain; uncharacterized subfamily; A functionally uncharacterized subgroup ... |
179-283 | 7.09e-17 | ||||||
Peptidase M14-like domain; uncharacterized subfamily; A functionally uncharacterized subgroup of the M14 family of metallocarboxypeptidases (MCPs). The M14 family are zinc-binding carboxypeptidases (CPs) which hydrolyze single, C-terminal amino acids from polypeptide chains, and have a recognition site for the free C-terminal carboxyl group, which is a key determinant of specificity. Two major subfamilies of the M14 family, defined based on sequence and structural homology, are the A/B and N/E subfamilies. Enzymes belonging to the A/B subfamily are normally synthesized as inactive precursors containing preceding signal peptide, followed by an N-terminal pro-region linked to the enzyme; these proenzymes are called procarboxypeptidases. The A/B enzymes can be further divided based on their substrate specificity; Carboxypeptidase A-like (CPA-like) enzymes favor hydrophobic residues while carboxypeptidase B-like (CPB-like) enzymes only cleave the basic residues lysine or arginine. The A forms have slightly different specificities, with Carboxypeptidase A1 (CPA1) preferring aliphatic and small aromatic residues, and CPA2 preferring the bulky aromatic side chains. Enzymes belonging to the N/E subfamily enzymes are not produced as inactive precursors and instead rely on their substrate specificity and subcellular compartmentalization to prevent inappropriate cleavages. They contain an extra C-terminal transthyretin-like domain, thought to be involved in folding or formation of oligomers. MCPs can also be classified based on their involvement in specific physiological processes; the pancreatic MCPs participate only in alimentary digestion and include carboxypeptidase A and B (A/B subfamily), while others, namely regulatory MCPs or the N/E subfamily, are involved in more selective reactions, mainly in non-digestive tissues and fluids, acting on blood coagulation/fibrinolysis, inflammation and local anaphylaxis, pro-hormone and neuropeptide processing, cellular response and others. Another MCP subfamily, is that of succinylglutamate desuccinylase /aspartoacylase, which hydrolyzes N-acetyl-L-aspartate (NAA), and deficiency in which is the established cause of Canavan disease. Another subfamily (referred to as subfamily C) includes an exceptional type of activity in the MCP family, that of dipeptidyl-peptidase activity of gamma-glutamyl-(L)-meso-diaminopimelate peptidase I which is involved in bacterial cell wall metabolism. Pssm-ID: 349447 Cd Length: 294 Bit Score: 80.12 E-value: 7.09e-17
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| Propep_M14 | pfam02244 | Carboxypeptidase activation peptide; Carboxypeptidases are found in abundance in pancreatic ... |
33-105 | 3.22e-16 | ||||||
Carboxypeptidase activation peptide; Carboxypeptidases are found in abundance in pancreatic secretions. The pro-segment moiety (activation peptide) accounts for up to a quarter of the total length of the peptidase, and is responsible for modulation of folding and activity of the pro-enzyme. Pssm-ID: 460505 Cd Length: 73 Bit Score: 72.63 E-value: 3.22e-16
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| M14_MpaA-like | cd06904 | Peptidase M14-like domain of Escherichia coli Murein Peptide Amidase A and related proteins; ... |
148-349 | 9.78e-13 | ||||||
Peptidase M14-like domain of Escherichia coli Murein Peptide Amidase A and related proteins; Peptidase M14-like domain of Escherichia coli Murein Peptide Amidase A (MpaA) and related proteins. MpaA is a member of the M14 family of metallocarboxypeptidases (MCPs), however it has an exceptional type of activity, it hydrolyzes the gamma-D-glutamyl-meso-diaminopimelic acid (gamma-D-Glu-Dap) bond in murein peptides. MpaA is specific for cleavage of the gamma-D-Glu-Dap bond of free murein tripeptide; it may also cleave murein tetrapeptide. MpaA has a different substrate specificity and cellular role than endopeptidase I, ENP1 (ENP1 does not belong to this group). MpaA works on free murein peptide in the recycling pathway. Pssm-ID: 349475 [Multi-domain] Cd Length: 214 Bit Score: 66.92 E-value: 9.78e-13
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| M14_Endopeptidase_I | cd06229 | Peptidase M14 carboxypeptidase family-like domain of Endopeptidase I; Peptidase M14-like ... |
179-349 | 9.13e-12 | ||||||
Peptidase M14 carboxypeptidase family-like domain of Endopeptidase I; Peptidase M14-like domain of Gamma-D-glutamyl-L-diamino acid endopeptidase 1 (also known as Gamma-D-glutamyl-meso-diaminopimelate peptidase I, and Endopeptidase I (ENP1); EC 3.4.19.11). ENP1 is a member of the M14 family of metallocarboxypeptidases (MCPs), and is classified as belonging to subfamily C. However it has an exceptional type of activity of hydrolyzing the gamma-D-Glu-(L)meso-diaminopimelic acid (gamma-D-Glu-Dap) bond of L-Ala-gamma-D-Glu-(L)meso-diaminopimelic acid and L-Ala-gamma-D-Glu-(L)meso-diaminopimelic acid(L)-D-Ala peptides. ENP1 has a different substrate specificity and cellular role than MpaA (MpaA does not belong to this group). ENP1 hydrolyzes the gamma-D-Glu-Dap bond of MurNAc-tripeptide and MurNAc-tetrapeptide, as well as the amide bond of free tripeptide and tetrapeptide. ENP1 is active on spore cortex peptidoglycan, and is produced at stage IV of sporulation in forespore and spore integuments. Pssm-ID: 349448 [Multi-domain] Cd Length: 238 Bit Score: 64.28 E-value: 9.13e-12
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