PLP-dependent aminotransferase family protein may combine pyridoxal phosphate with an alpha-amino acid to form a Schiff base or aldimine intermediate, which then acts as the substrate in a reaction such as a transamination, racemization, or decarboxylation
Aspartate aminotransferase (AAT) superfamily (fold type I) of pyridoxal phosphate (PLP) ...
17-424
0e+00
Aspartate aminotransferase (AAT) superfamily (fold type I) of pyridoxal phosphate (PLP)-dependent enzymes. PLP combines with an alpha-amino acid to form a compound called a Schiff base or aldimine intermediate, which depending on the reaction, is the substrate in four kinds of reactions (1) transamination (movement of amino groups), (2) racemization (redistribution of enantiomers), (3) decarboxylation (removing COOH groups), and (4) various side-chain reactions depending on the enzyme involved. Pyridoxal phosphate (PLP) dependent enzymes were previously classified into alpha, beta and gamma classes, based on the chemical characteristics (carbon atom involved) of the reaction they catalyzed. The availability of several structures allowed a comprehensive analysis of the evolutionary classification of PLP dependent enzymes, and it was found that the functional classification did not always agree with the evolutionary history of these enzymes. Structure and sequence analysis has revealed that the PLP dependent enzymes can be classified into four major groups of different evolutionary origin: aspartate aminotransferase superfamily (fold type I), tryptophan synthase beta superfamily (fold type II), alanine racemase superfamily (fold type III), and D-amino acid superfamily (fold type IV) and Glycogen phophorylase family (fold type V).
The actual alignment was detected with superfamily member PLN02397:
Pssm-ID: 450240 Cd Length: 423 Bit Score: 673.21 E-value: 0e+00
Aspartate/aromatic aminotransferase [Amino acid transport and metabolism]; Aspartate/aromatic ...
27-423
0e+00
Aspartate/aromatic aminotransferase [Amino acid transport and metabolism]; Aspartate/aromatic aminotransferase is part of the Pathway/BioSystem: Isoleucine, leucine, valine biosynthesis
Pssm-ID: 441057 Cd Length: 396 Bit Score: 565.11 E-value: 0e+00
Aspartate aminotransferase family. This family belongs to pyridoxal phosphate (PLP)-dependent ...
54-421
2.26e-52
Aspartate aminotransferase family. This family belongs to pyridoxal phosphate (PLP)-dependent aspartate aminotransferase superfamily (fold I). Pyridoxal phosphate combines with an alpha-amino acid to form a compound called a Schiff base or aldimine intermediate, which depending on the reaction, is the substrate in four kinds of reactions (1) transamination (movement of amino groups), (2) racemization (redistribution of enantiomers), (3) decarboxylation (removing COOH groups), and (4) various side-chain reactions depending on the enzyme involved. Pyridoxal phosphate (PLP) dependent enzymes were previously classified into alpha, beta and gamma classes, based on the chemical characteristics (carbon atom involved) of the reaction they catalyzed. The availability of several structures allowed a comprehensive analysis of the evolutionary classification of PLP dependent enzymes, and it was found that the functional classification did not always agree with the evolutionary history of these enzymes. The major groups in this CD corresponds to Aspartate aminotransferase a, b and c, Tyrosine, Alanine, Aromatic-amino-acid, Glutamine phenylpyruvate, 1-Aminocyclopropane-1-carboxylate synthase, Histidinol-phosphate, gene products of malY and cobC, Valine-pyruvate aminotransferase and Rhizopine catabolism regulatory protein.
Pssm-ID: 99734 [Multi-domain] Cd Length: 350 Bit Score: 179.07 E-value: 2.26e-52
Aspartate/aromatic aminotransferase [Amino acid transport and metabolism]; Aspartate/aromatic ...
27-423
0e+00
Aspartate/aromatic aminotransferase [Amino acid transport and metabolism]; Aspartate/aromatic aminotransferase is part of the Pathway/BioSystem: Isoleucine, leucine, valine biosynthesis
Pssm-ID: 441057 Cd Length: 396 Bit Score: 565.11 E-value: 0e+00
Aspartate aminotransferase family. This family belongs to pyridoxal phosphate (PLP)-dependent ...
54-421
2.26e-52
Aspartate aminotransferase family. This family belongs to pyridoxal phosphate (PLP)-dependent aspartate aminotransferase superfamily (fold I). Pyridoxal phosphate combines with an alpha-amino acid to form a compound called a Schiff base or aldimine intermediate, which depending on the reaction, is the substrate in four kinds of reactions (1) transamination (movement of amino groups), (2) racemization (redistribution of enantiomers), (3) decarboxylation (removing COOH groups), and (4) various side-chain reactions depending on the enzyme involved. Pyridoxal phosphate (PLP) dependent enzymes were previously classified into alpha, beta and gamma classes, based on the chemical characteristics (carbon atom involved) of the reaction they catalyzed. The availability of several structures allowed a comprehensive analysis of the evolutionary classification of PLP dependent enzymes, and it was found that the functional classification did not always agree with the evolutionary history of these enzymes. The major groups in this CD corresponds to Aspartate aminotransferase a, b and c, Tyrosine, Alanine, Aromatic-amino-acid, Glutamine phenylpyruvate, 1-Aminocyclopropane-1-carboxylate synthase, Histidinol-phosphate, gene products of malY and cobC, Valine-pyruvate aminotransferase and Rhizopine catabolism regulatory protein.
Pssm-ID: 99734 [Multi-domain] Cd Length: 350 Bit Score: 179.07 E-value: 2.26e-52
Aspartate aminotransferase (AAT) superfamily (fold type I) of pyridoxal phosphate (PLP) ...
127-288
9.71e-14
Aspartate aminotransferase (AAT) superfamily (fold type I) of pyridoxal phosphate (PLP)-dependent enzymes. PLP combines with an alpha-amino acid to form a compound called a Schiff base or aldimine intermediate, which depending on the reaction, is the substrate in four kinds of reactions (1) transamination (movement of amino groups), (2) racemization (redistribution of enantiomers), (3) decarboxylation (removing COOH groups), and (4) various side-chain reactions depending on the enzyme involved. Pyridoxal phosphate (PLP) dependent enzymes were previously classified into alpha, beta and gamma classes, based on the chemical characteristics (carbon atom involved) of the reaction they catalyzed. The availability of several structures allowed a comprehensive analysis of the evolutionary classification of PLP dependent enzymes, and it was found that the functional classification did not always agree with the evolutionary history of these enzymes. Structure and sequence analysis has revealed that the PLP dependent enzymes can be classified into four major groups of different evolutionary origin: aspartate aminotransferase superfamily (fold type I), tryptophan synthase beta superfamily (fold type II), alanine racemase superfamily (fold type III), and D-amino acid superfamily (fold type IV) and Glycogen phophorylase family (fold type V).
Pssm-ID: 99742 [Multi-domain] Cd Length: 170 Bit Score: 68.95 E-value: 9.71e-14
Aspartate/methionine/tyrosine aminotransferase [Amino acid transport and metabolism]; ...
34-397
5.95e-10
Aspartate/methionine/tyrosine aminotransferase [Amino acid transport and metabolism]; Aspartate/methionine/tyrosine aminotransferase is part of the Pathway/BioSystem: Isoleucine, leucine, valine biosynthesis
Pssm-ID: 440205 [Multi-domain] Cd Length: 387 Bit Score: 60.53 E-value: 5.95e-10
Histidinol-phosphate/aromatic aminotransferase or cobyric acid decarboxylase [Amino acid ...
113-249
5.06e-03
Histidinol-phosphate/aromatic aminotransferase or cobyric acid decarboxylase [Amino acid transport and metabolism]; Histidinol-phosphate/aromatic aminotransferase or cobyric acid decarboxylase is part of the Pathway/BioSystem: Cobalamine/B12 biosynthesis
Pssm-ID: 439849 [Multi-domain] Cd Length: 341 Bit Score: 38.57 E-value: 5.06e-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.
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