Fungal Phospholipase B-like; cPLA2 GrpIVA homologs; catalytic domain; Fungal phospholipase B are Group IV cPLA2 homologs. Aspergillus PLA2 is Ca-dependent, yet it does not contain a C2 domain. PLB deacylates both sn-1 and sn-2 chains of phospholipids and are abundantly expressed in fungi. It shows lysophospholipase (lysoPL) and transacylase activities. The active site residues from cPLA2 are also conserved in PLB. Like cPLA2, PLB also has a consensus sequence of Sm-X-Nu-Sm (Sm = small residue, X = any residue and Nu = nucleophile). It includes PLB1 from Schizosaccharomyces pombe, PLB2 from Candida glabrata, and PLB3 from Saccharomyces cerevisiae. PLB1, PLB2, and PLB3 show PLB and lysoPL activities; PLB3 is specific for phosphoinositides.
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Pssm-ID: 132842 Cd Length: 552 Bit Score: 882.47 E-value: 0e+00
Fungal Phospholipase B-like; cPLA2 GrpIVA homologs; catalytic domain; Fungal phospholipase B are Group IV cPLA2 homologs. Aspergillus PLA2 is Ca-dependent, yet it does not contain a C2 domain. PLB deacylates both sn-1 and sn-2 chains of phospholipids and are abundantly expressed in fungi. It shows lysophospholipase (lysoPL) and transacylase activities. The active site residues from cPLA2 are also conserved in PLB. Like cPLA2, PLB also has a consensus sequence of Sm-X-Nu-Sm (Sm = small residue, X = any residue and Nu = nucleophile). It includes PLB1 from Schizosaccharomyces pombe, PLB2 from Candida glabrata, and PLB3 from Saccharomyces cerevisiae. PLB1, PLB2, and PLB3 show PLB and lysoPL activities; PLB3 is specific for phosphoinositides.
Pssm-ID: 132842 Cd Length: 552 Bit Score: 882.47 E-value: 0e+00
Lysophospholipase catalytic domain; This family consists of Lysophospholipase / phospholipase ...
132-614
0e+00
Lysophospholipase catalytic domain; This family consists of Lysophospholipase / phospholipase B EC:3.1.1.5 and cytosolic phospholipase A2 EC:3.1.4 which also has a C2 domain pfam00168. Phospholipase B enzymes catalyze the release of fatty acids from lysophsopholipids and are capable in vitro of hydrolysing all phospholipids extractable form yeast cells. Cytosolic phospholipase A2 associates with natural membranes in response to physiological increases in Ca2+ and selectively hydrolyses arachidonyl phospholipids, the aligned region corresponds the the carboxy-terminal Ca2+-independent catalytic domain of the protein as discussed in.
Pssm-ID: 366778 Cd Length: 490 Bit Score: 701.05 E-value: 0e+00
Fungal Phospholipase B-like; cPLA2 GrpIVA homologs; catalytic domain; Fungal phospholipase B are Group IV cPLA2 homologs. Aspergillus PLA2 is Ca-dependent, yet it does not contain a C2 domain. PLB deacylates both sn-1 and sn-2 chains of phospholipids and are abundantly expressed in fungi. It shows lysophospholipase (lysoPL) and transacylase activities. The active site residues from cPLA2 are also conserved in PLB. Like cPLA2, PLB also has a consensus sequence of Sm-X-Nu-Sm (Sm = small residue, X = any residue and Nu = nucleophile). It includes PLB1 from Schizosaccharomyces pombe, PLB2 from Candida glabrata, and PLB3 from Saccharomyces cerevisiae. PLB1, PLB2, and PLB3 show PLB and lysoPL activities; PLB3 is specific for phosphoinositides.
Pssm-ID: 132842 Cd Length: 552 Bit Score: 882.47 E-value: 0e+00
Lysophospholipase catalytic domain; This family consists of Lysophospholipase / phospholipase ...
132-614
0e+00
Lysophospholipase catalytic domain; This family consists of Lysophospholipase / phospholipase B EC:3.1.1.5 and cytosolic phospholipase A2 EC:3.1.4 which also has a C2 domain pfam00168. Phospholipase B enzymes catalyze the release of fatty acids from lysophsopholipids and are capable in vitro of hydrolysing all phospholipids extractable form yeast cells. Cytosolic phospholipase A2 associates with natural membranes in response to physiological increases in Ca2+ and selectively hydrolyses arachidonyl phospholipids, the aligned region corresponds the the carboxy-terminal Ca2+-independent catalytic domain of the protein as discussed in.
Pssm-ID: 366778 Cd Length: 490 Bit Score: 701.05 E-value: 0e+00
Cytosolic phospholipase A2, catalytic domain; hydrolyses arachidonyl phospholipids; Catalytic domain of cytosolic phospholipase A2 (PLA2; EC 3.1.1.4) hydrolyzes the sn-2-acyl ester bond of phospholipids to release arachidonic acid. At the active site, cPLA2 contains a serine nucleophile through which the catalytic mechanism is initiated. The active site is partially covered by a solvent-accessible flexible lid. cPLA2 displays interfacial activation as it exists in both "closed lid" and "open lid" forms. Movement of the cPLA2 lid possibly exposes a greater hydrophobic surface and the active site. cPLA2 belongs to the alpha-beta hydrolase family which is identified by a characteristic nucleophile elbow with a consensus sequence of Sm-X-Nu-Sm (Sm = small residue, X = any residue and Nu = nucleophile). Calcium is required for cPLA2 to bind with membranes or phospholipids. Group IV cPLA2 includes six intercellular enzymes: cPLA2alpha, cPLA2beta, cPLA2gamma, cPLA2delta, cPLA2epsilon, and cPLA2zeta.
Pssm-ID: 132835 [Multi-domain] Cd Length: 438 Bit Score: 480.97 E-value: 3.01e-165
Group IVA cytosolic phospholipase A2; catalytic domain; Ca-dependent; Group IVA cPLA2, an 85 ...
85-458
6.53e-20
Group IVA cytosolic phospholipase A2; catalytic domain; Ca-dependent; Group IVA cPLA2, an 85 kDa protein, consists of two domains: the regulatory C2 domain and the alpha/beta hydrolase PLA2 domain. Group IVA cPLA2 is also referred to as cPLA2-alpha. The catalytic domain of cytosolic phospholipase A2 (cPLA2; EC 3.1.1.4) hydrolyzes the sn-2-acyl ester bond of phospholipids to release arachidonic acid. At the active site, cPLA2 contains a serine nucleophile through which the catalytic mechanism is initiated. The active site is partially covered by a solvent-accessible flexible lid. cPLA2 displays interfacial activation as it exists in both "closed lid" and "open lid" forms. Movement of the cPLA2 lid possibly exposes a greater hydrophobic surface and the active site. cPLA2 belongs to the alpha-beta hydrolase family which is identified by a characteristic nucleophile elbow with a consensus sequence of Sm-X-Nu-Sm (Sm = small residue, X = any residue and Nu = nucleophile). Calcium is required for cPLA2 to bind with membranes or phospholipids. A calcium-dependent phospholipid binding domain resides in the N-terminal region of cPLA2; it is homologous to the C2 domain superfamily which is not included in this hierarchy. Includes PLA2G4A from chicken, human, and frog.
Pssm-ID: 132839 Cd Length: 505 Bit Score: 93.67 E-value: 6.53e-20
Group IVB, IVD, IVE, and IVF cytosolic phospholipase A2; catalytic domain; Ca-dependent; Group ...
87-368
3.43e-15
Group IVB, IVD, IVE, and IVF cytosolic phospholipase A2; catalytic domain; Ca-dependent; Group IVB, IVD, IVE, and IVF cPLA2 consists of two domains: the regulatory C2 domain and alpha/beta hydrolase PLA2 domain. Group IVB, IVD, IVE, and IVF cPLA2 are also referred to as cPLA2-beta, -delta, -epsilon, and -zeta respectively. cPLA2-beta is approximately 30% identical to cPLA2-alpha and it shows low enzymatic activity compared to cPLA2alpha. cPLA2-beta hydrolyzes palmitic acid from 1-[14C]palmitoyl-2-arachidonoyl-PC and arachidonic acid from 1-palmitoyl-2[14C]arachidonoyl-PC, but not from 1-O-alkyl-2[3H]arachidonoyl-PC. cPLA2-delta, -epsilon, and -zeta are approximately 45-50% identical to cPLA2-beta and 31-37% identical to cPLA2-alpha. It's possible that cPLA2-beta, -delta, -epsilon, and -zeta may have arisen by gene duplication from an ancestral gene. The catalytic domain of cytosolic phospholipase A2 (PLA2; EC 3.1.1.4) hydrolyzes the sn-2-acyl ester bond of phospholipids to release arachidonic acid. At the active site, cPLA2 contains a serine nucleophile through which the catalytic mechanism is initiated. The active site is partially covered by a solvent-accessible flexible lid. cPLA2 displays interfacial activation as it exists in both "closed lid" and "open lid" forms. Movement of the cPLA2 lid possibly exposes a greater hydrophobic surface and the active site. cPLA2 belongs to the alpha-beta hydrolase family which is identified by a characteristic nucleophile elbow with a consensus sequence of Sm-X-Nu-Sm (Sm = small residue, X = any residue and Nu = nucleophile). Calcium is required for cPLA2 to bind with membranes or phospholipids. The calcium-dependent phospholipid binding domain resides in the N-terminal region of cPLA2; it is homologous to the C2 domain superfamily which is not included in this hierarchy. It includes PLA2G4B, PLA2G4D, PLA2G4E, and PLA2G4F from humans.
Pssm-ID: 132840 [Multi-domain] Cd Length: 541 Bit Score: 78.92 E-value: 3.43e-15
Group IVC cytoplasmic phospholipase A2; catalytic domain; Ca-independent; Group IVC cPLA2, a ...
87-460
2.18e-14
Group IVC cytoplasmic phospholipase A2; catalytic domain; Ca-independent; Group IVC cPLA2, a small 61 kDa protein, is a single domain alpha/beta hydrolase. It lacks a C2 domain; therefore, it has no Ca-dependence. Group IVC cPLA2 is also referred to as cPLA2-gamma. The cPLA2-gamma enzyme is predominantly found in cardiac and skeletal muscles, and to a lesser extent in the brain. Human cPLA2-gamma is approximately 30% identical to cPLA2-alpha. The catalytic domain of cytosolic phospholipase A2 (PLA2; EC 3.1.1.4) hydrolyzes the sn-2-acyl ester bond of phospholipids to release arachidonic acid. At the active site, cPLA2 contains a serine nucleophile through which the catalytic mechanism is initiated. The active site is partially covered by a solvent-accessible flexible lid. cPLA2 displays interfacial activation as it exists in both "closed lid" and "open lid" forms. Movement of the cPLA2 lid possibly exposes a greater hydrophobic surface and the active site. cPLA2 belongs to the alpha-beta hydrolase family which is identified by a characteristic nucleophile elbow with a consensus sequence of Sm-X-Nu-Sm (Sm = small residue, X = any residue and Nu = nucleophile). Includes PLA2G4C protein from human and Pla2g4c protein from mouse.
Pssm-ID: 132841 [Multi-domain] Cd Length: 430 Bit Score: 75.98 E-value: 2.18e-14
Patatins and Phospholipases; Patatin-like phospholipase. This family consists of various ...
134-218
5.92e-05
Patatins and Phospholipases; Patatin-like phospholipase. This family consists of various patatin glycoproteins from plants. The patatin protein accounts for up to 40% of the total soluble protein in potato tubers. Patatin is a storage protein, but it also has the enzymatic activity of a lipid acyl hydrolase, catalyzing the cleavage of fatty acids from membrane lipids. Members of this family have also been found in vertebrates. This family also includes the catalytic domain of cytosolic phospholipase A2 (PLA2; EC 3.1.1.4) hydrolyzes the sn-2-acyl ester bond of phospholipids to release arachidonic acid. At the active site, cPLA2 contains a serine nucleophile through which the catalytic mechanism is initiated. The active site is partially covered by a solvent-accessible flexible lid. cPLA2 displays interfacial activation as it exists in both "closed lid" and "open lid" forms.
Pssm-ID: 132836 [Multi-domain] Cd Length: 155 Bit Score: 43.94 E-value: 5.92e-05
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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