bifunctional phosphopantothenoylcysteine decarboxylase (CoaC)/phosphopantothenate synthase (CoaB) catalyzes two steps in the biosynthesis of coenzyme A, the conjugation of cysteine to 4'-phosphopantothenate to form 4-phosphopantothenoylcysteine, followed by its decarboxylation to form 4'-phosphopantotheine
Phosphopantothenoylcysteine synthetase/decarboxylase CoaBC [Coenzyme transport and metabolism]; ...
2-388
0e+00
Phosphopantothenoylcysteine synthetase/decarboxylase CoaBC [Coenzyme transport and metabolism]; Phosphopantothenoylcysteine synthetase/decarboxylase CoaBC is part of the Pathway/BioSystem: Pantothenate/CoA biosynthesis
:
Pssm-ID: 440221 [Multi-domain] Cd Length: 399 Bit Score: 605.48 E-value: 0e+00
Phosphopantothenoylcysteine synthetase/decarboxylase CoaBC [Coenzyme transport and metabolism]; ...
2-388
0e+00
Phosphopantothenoylcysteine synthetase/decarboxylase CoaBC [Coenzyme transport and metabolism]; Phosphopantothenoylcysteine synthetase/decarboxylase CoaBC is part of the Pathway/BioSystem: Pantothenate/CoA biosynthesis
Pssm-ID: 440221 [Multi-domain] Cd Length: 399 Bit Score: 605.48 E-value: 0e+00
phosphopantothenoylcysteine decarboxylase / phosphopantothenate--cysteine ligase; This model ...
2-387
2.80e-150
phosphopantothenoylcysteine decarboxylase / phosphopantothenate--cysteine ligase; This model represents a bifunctional enzyme that catalyzes the second and third steps (cysteine ligation, EC 6.3.2.5, and decarboxylation, EC 4.1.1.36) in the biosynthesis of coenzyme A (CoA) from pantothenate in bacteria. In early descriptions of this flavoprotein, a ts mutation in one region of the protein appeared to cause a defect in DNA metaobolism rather than an increased need for the pantothenate precursor beta-alanine. This protein was then called dfp, for DNA/pantothenate metabolism flavoprotein. The authors responsible for detecting phosphopantothenate--cysteine ligase activity suggest renaming this bifunctional protein coaBC for its role in CoA biosynthesis. This enzyme contains the FMN cofactor, but no FAD or pyruvoyl group. The amino-terminal region contains the phosphopantothenoylcysteine decarboxylase activity. [Biosynthesis of cofactors, prosthetic groups, and carriers, Pantothenate and coenzyme A]
Pssm-ID: 273116 [Multi-domain] Cd Length: 391 Bit Score: 430.25 E-value: 2.80e-150
DNA / pantothenate metabolism flavoprotein; The DNA/pantothenate metabolism flavoprotein (EC:4. ...
180-359
1.05e-99
DNA / pantothenate metabolism flavoprotein; The DNA/pantothenate metabolism flavoprotein (EC:4.1.1.36) affects synthesis of DNA, and pantothenate metabolism.
Pssm-ID: 461186 [Multi-domain] Cd Length: 183 Bit Score: 293.93 E-value: 1.05e-99
Lin1944 and related proteins, classical (c) SDRs; Lin1944 protein from Listeria Innocua is a ...
207-276
5.28e-03
Lin1944 and related proteins, classical (c) SDRs; Lin1944 protein from Listeria Innocua is a classical SDR, it contains a glycine-rich motif similar to the canonical motif of the SDR NAD(P)-binding site. However, the typical SDR active site residues are absent in this subgroup of proteins of undetermined function. SDRs are a functionally diverse family of oxidoreductases that have a single domain with a structurally conserved Rossmann fold (alpha/beta folding pattern with a central beta-sheet), an NAD(P)(H)-binding region, and a structurally diverse C-terminal region. Classical SDRs are typically about 250 residues long, while extended SDRs are approximately 350 residues. Sequence identity between different SDR enzymes are typically in the 15-30% range, but the enzymes share the Rossmann fold NAD-binding motif and characteristic NAD-binding and catalytic sequence patterns. These enzymes catalyze a wide range of activities including the metabolism of steroids, cofactors, carbohydrates, lipids, aromatic compounds, and amino acids, and act in redox sensing. Classical SDRs have an TGXXX[AG]XG cofactor binding motif and a YXXXK active site motif, with the Tyr residue of the active site motif serving as a critical catalytic residue (Tyr-151, human prostaglandin dehydrogenase (PGDH) numbering). In addition to the Tyr and Lys, there is often an upstream Ser (Ser-138, PGDH numbering) and/or an Asn (Asn-107, PGDH numbering) contributing to the active site; while substrate binding is in the C-terminal region, which determines specificity. The standard reaction mechanism is a 4-pro-S hydride transfer and proton relay involving the conserved Tyr and Lys, a water molecule stabilized by Asn, and nicotinamide. Extended SDRs have additional elements in the C-terminal region, and typically have a TGXXGXXG cofactor binding motif. Complex (multidomain) SDRs such as ketoreductase domains of fatty acid synthase have a GGXGXXG NAD(P)-binding motif and an altered active site motif (YXXXN). Fungal type ketoacyl reductases have a TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs have lost catalytic activity and/or have an unusual NAD(P)-binding motif and missing or unusual active site residues. Reactions catalyzed within the SDR family include isomerization, decarboxylation, epimerization, C=N bond reduction, dehydratase activity, dehalogenation, Enoyl-CoA reduction, and carbonyl-alcohol oxidoreduction.
Pssm-ID: 212497 [Multi-domain] Cd Length: 198 Bit Score: 37.95 E-value: 5.28e-03
Phosphopantothenoylcysteine synthetase/decarboxylase CoaBC [Coenzyme transport and metabolism]; ...
2-388
0e+00
Phosphopantothenoylcysteine synthetase/decarboxylase CoaBC [Coenzyme transport and metabolism]; Phosphopantothenoylcysteine synthetase/decarboxylase CoaBC is part of the Pathway/BioSystem: Pantothenate/CoA biosynthesis
Pssm-ID: 440221 [Multi-domain] Cd Length: 399 Bit Score: 605.48 E-value: 0e+00
phosphopantothenoylcysteine decarboxylase / phosphopantothenate--cysteine ligase; This model ...
2-387
2.80e-150
phosphopantothenoylcysteine decarboxylase / phosphopantothenate--cysteine ligase; This model represents a bifunctional enzyme that catalyzes the second and third steps (cysteine ligation, EC 6.3.2.5, and decarboxylation, EC 4.1.1.36) in the biosynthesis of coenzyme A (CoA) from pantothenate in bacteria. In early descriptions of this flavoprotein, a ts mutation in one region of the protein appeared to cause a defect in DNA metaobolism rather than an increased need for the pantothenate precursor beta-alanine. This protein was then called dfp, for DNA/pantothenate metabolism flavoprotein. The authors responsible for detecting phosphopantothenate--cysteine ligase activity suggest renaming this bifunctional protein coaBC for its role in CoA biosynthesis. This enzyme contains the FMN cofactor, but no FAD or pyruvoyl group. The amino-terminal region contains the phosphopantothenoylcysteine decarboxylase activity. [Biosynthesis of cofactors, prosthetic groups, and carriers, Pantothenate and coenzyme A]
Pssm-ID: 273116 [Multi-domain] Cd Length: 391 Bit Score: 430.25 E-value: 2.80e-150
DNA / pantothenate metabolism flavoprotein; The DNA/pantothenate metabolism flavoprotein (EC:4. ...
180-359
1.05e-99
DNA / pantothenate metabolism flavoprotein; The DNA/pantothenate metabolism flavoprotein (EC:4.1.1.36) affects synthesis of DNA, and pantothenate metabolism.
Pssm-ID: 461186 [Multi-domain] Cd Length: 183 Bit Score: 293.93 E-value: 1.05e-99
phosphopantothenoylcysteine decarboxylase, streptococcal; In most bacteria, a single ...
2-172
6.15e-55
phosphopantothenoylcysteine decarboxylase, streptococcal; In most bacteria, a single bifunctional protein catalyses phosphopantothenoylcysteine decarboxylase and phosphopantothenate--cysteine ligase activities, sequential steps in coenzyme A biosynthesis (see TIGR00521). These activities reside in separate proteins encoded by tandem genes in some bacterial lineages. This model describes proteins from the genera Streptococcus and Enterococcus homologous to the N-terminal region of TIGR00521, corresponding to phosphopantothenoylcysteine decarboxylase activity. [Biosynthesis of cofactors, prosthetic groups, and carriers, Pantothenate and coenzyme A]
Pssm-ID: 131168 Cd Length: 177 Bit Score: 179.24 E-value: 6.15e-55
Flavoprotein; This family contains diverse flavoprotein enzymes. This family includes ...
2-152
6.65e-45
Flavoprotein; This family contains diverse flavoprotein enzymes. This family includes epidermin biosynthesis protein, EpiD, which has been shown to be a flavoprotein that binds FMN. This enzyme catalyzes the removal of two reducing equivalents from the cysteine residue of the C-terminal meso-lanthionine of epidermin to form a --C==C-- double bond. This family also includes the B chain of dipicolinate synthase a small polar molecule that accumulates to high concentrations in bacterial endospores, and is thought to play a role in spore heat resistance, or the maintenance of heat resistance. dipicolinate synthase catalyzes the formation of dipicolinic acid from dihydroxydipicolinic acid. This family also includes phenyl-acrylic acid decarboxylase (EC:4.1.1.-).
Pssm-ID: 426775 [Multi-domain] Cd Length: 177 Bit Score: 152.91 E-value: 6.65e-45
Lin1944 and related proteins, classical (c) SDRs; Lin1944 protein from Listeria Innocua is a ...
207-276
5.28e-03
Lin1944 and related proteins, classical (c) SDRs; Lin1944 protein from Listeria Innocua is a classical SDR, it contains a glycine-rich motif similar to the canonical motif of the SDR NAD(P)-binding site. However, the typical SDR active site residues are absent in this subgroup of proteins of undetermined function. SDRs are a functionally diverse family of oxidoreductases that have a single domain with a structurally conserved Rossmann fold (alpha/beta folding pattern with a central beta-sheet), an NAD(P)(H)-binding region, and a structurally diverse C-terminal region. Classical SDRs are typically about 250 residues long, while extended SDRs are approximately 350 residues. Sequence identity between different SDR enzymes are typically in the 15-30% range, but the enzymes share the Rossmann fold NAD-binding motif and characteristic NAD-binding and catalytic sequence patterns. These enzymes catalyze a wide range of activities including the metabolism of steroids, cofactors, carbohydrates, lipids, aromatic compounds, and amino acids, and act in redox sensing. Classical SDRs have an TGXXX[AG]XG cofactor binding motif and a YXXXK active site motif, with the Tyr residue of the active site motif serving as a critical catalytic residue (Tyr-151, human prostaglandin dehydrogenase (PGDH) numbering). In addition to the Tyr and Lys, there is often an upstream Ser (Ser-138, PGDH numbering) and/or an Asn (Asn-107, PGDH numbering) contributing to the active site; while substrate binding is in the C-terminal region, which determines specificity. The standard reaction mechanism is a 4-pro-S hydride transfer and proton relay involving the conserved Tyr and Lys, a water molecule stabilized by Asn, and nicotinamide. Extended SDRs have additional elements in the C-terminal region, and typically have a TGXXGXXG cofactor binding motif. Complex (multidomain) SDRs such as ketoreductase domains of fatty acid synthase have a GGXGXXG NAD(P)-binding motif and an altered active site motif (YXXXN). Fungal type ketoacyl reductases have a TGXXXGX(1-2)G NAD(P)-binding motif. Some atypical SDRs have lost catalytic activity and/or have an unusual NAD(P)-binding motif and missing or unusual active site residues. Reactions catalyzed within the SDR family include isomerization, decarboxylation, epimerization, C=N bond reduction, dehydratase activity, dehalogenation, Enoyl-CoA reduction, and carbonyl-alcohol oxidoreduction.
Pssm-ID: 212497 [Multi-domain] Cd Length: 198 Bit Score: 37.95 E-value: 5.28e-03
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.
of the residues that compose this conserved feature have been mapped to the query sequence.
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Functional characterization of the conserved domain architecture found on the query.
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The table lists conserved domains identified on the query sequence. Click on the plus sign (+) on the left to display full descriptions, alignments, and scores.
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(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
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