PALP domain-containing protein belonging to the tryptophan synthase beta superfamily (fold type II) that consists of pyridoxal phosphate (PLP)-dependent enzymes that catalyze beta-replacement and beta-elimination reactions
Tryptophan synthase beta superfamily (fold type II); this family of pyridoxal phosphate (PLP) ...
1-232
0e+00
Tryptophan synthase beta superfamily (fold type II); this family of pyridoxal phosphate (PLP)-dependent enzymes catalyzes beta-replacement and beta-elimination reactions. This CD corresponds to aminocyclopropane-1-carboxylate deaminase (ACCD), tryptophan synthase beta chain (Trp-synth_B), cystathionine beta-synthase (CBS), O-acetylserine sulfhydrylase (CS), serine dehydratase (Ser-dehyd), threonine dehydratase (Thr-dehyd), diaminopropionate ammonia lyase (DAL), and threonine synthase (Thr-synth). ACCD catalyzes the conversion of 1-aminocyclopropane-1-carboxylate to alpha-ketobutyrate and ammonia. Tryptophan synthase folds into a tetramer, where the beta chain is the catalytic PLP-binding subunit and catalyzes the formation of L-tryptophan from indole and L-serine. CBS is a tetrameric hemeprotein that catalyzes condensation of serine and homocysteine to cystathionine. CS is a homodimer that catalyzes the formation of L-cysteine from O-acetyl-L-serine. Ser-dehyd catalyzes the conversion of L- or D-serine to pyruvate and ammonia. Thr-dehyd is active as a homodimer and catalyzes the conversion of L-threonine to 2-oxobutanoate and ammonia. DAL is also a homodimer and catalyzes the alpha, beta-elimination reaction of both L- and D-alpha, beta-diaminopropionate to form pyruvate and ammonia. Thr-synth catalyzes the formation of threonine and inorganic phosphate from O-phosphohomoserine.
The actual alignment was detected with superfamily member PRK12390:
Pssm-ID: 444852 Cd Length: 337 Bit Score: 502.25 E-value: 0e+00
1-aminocyclopropane-1-carboxylate deaminase; This pyridoxal phosphate-dependent enzyme ...
1-232
4.24e-151
1-aminocyclopropane-1-carboxylate deaminase; This pyridoxal phosphate-dependent enzyme degrades 1-aminocyclopropane-1-carboxylate, which in plants is a precursor of the ripening hormone ethylene, to ammonia and alpha-ketoglutarate. This model includes all members of this family for which function has been demonstrated experimentally, but excludes a closely related family often annotated as putative members of this family. [Central intermediary metabolism, Other]
Pssm-ID: 130341 Cd Length: 337 Bit Score: 423.48 E-value: 4.24e-151
Aminocyclopropane-1-carboxylate deaminase (ACCD): Pyridoxal phosphate (PLP)-dependent enzyme which catalyzes the conversion of 1-aminocyclopropane-L-carboxylate (ACC), a precursor of the plant hormone ethylene, to alpha-ketobutyrate and ammonia.
Pssm-ID: 107210 Cd Length: 307 Bit Score: 390.63 E-value: 1.40e-138
Pyridoxal-phosphate dependent enzyme; Members of this family are all pyridoxal-phosphate ...
4-232
6.63e-30
Pyridoxal-phosphate dependent enzyme; Members of this family are all pyridoxal-phosphate dependent enzymes. This family includes: serine dehydratase EC:4.2.1.13 P20132, threonine dehydratase EC:4.2.1.16, tryptophan synthase beta chain EC:4.2.1.20, threonine synthase EC:4.2.99.2, cysteine synthase EC:4.2.99.8 P11096, cystathionine beta-synthase EC:4.2.1.22, 1-aminocyclopropane-1-carboxylate deaminase EC:4.1.99.4.
Pssm-ID: 459749 [Multi-domain] Cd Length: 295 Bit Score: 112.79 E-value: 6.63e-30
1-aminocyclopropane-1-carboxylate deaminase; This pyridoxal phosphate-dependent enzyme ...
1-232
4.24e-151
1-aminocyclopropane-1-carboxylate deaminase; This pyridoxal phosphate-dependent enzyme degrades 1-aminocyclopropane-1-carboxylate, which in plants is a precursor of the ripening hormone ethylene, to ammonia and alpha-ketoglutarate. This model includes all members of this family for which function has been demonstrated experimentally, but excludes a closely related family often annotated as putative members of this family. [Central intermediary metabolism, Other]
Pssm-ID: 130341 Cd Length: 337 Bit Score: 423.48 E-value: 4.24e-151
Aminocyclopropane-1-carboxylate deaminase (ACCD): Pyridoxal phosphate (PLP)-dependent enzyme which catalyzes the conversion of 1-aminocyclopropane-L-carboxylate (ACC), a precursor of the plant hormone ethylene, to alpha-ketobutyrate and ammonia.
Pssm-ID: 107210 Cd Length: 307 Bit Score: 390.63 E-value: 1.40e-138
Pyridoxal-phosphate dependent enzyme; Members of this family are all pyridoxal-phosphate ...
4-232
6.63e-30
Pyridoxal-phosphate dependent enzyme; Members of this family are all pyridoxal-phosphate dependent enzymes. This family includes: serine dehydratase EC:4.2.1.13 P20132, threonine dehydratase EC:4.2.1.16, tryptophan synthase beta chain EC:4.2.1.20, threonine synthase EC:4.2.99.2, cysteine synthase EC:4.2.99.8 P11096, cystathionine beta-synthase EC:4.2.1.22, 1-aminocyclopropane-1-carboxylate deaminase EC:4.1.99.4.
Pssm-ID: 459749 [Multi-domain] Cd Length: 295 Bit Score: 112.79 E-value: 6.63e-30
Tryptophan synthase beta superfamily (fold type II); this family of pyridoxal phosphate (PLP) ...
1-190
1.28e-20
Tryptophan synthase beta superfamily (fold type II); this family of pyridoxal phosphate (PLP)-dependent enzymes catalyzes beta-replacement and beta-elimination reactions. This CD corresponds to aminocyclopropane-1-carboxylate deaminase (ACCD), tryptophan synthase beta chain (Trp-synth_B), cystathionine beta-synthase (CBS), O-acetylserine sulfhydrylase (CS), serine dehydratase (Ser-dehyd), threonine dehydratase (Thr-dehyd), diaminopropionate ammonia lyase (DAL), and threonine synthase (Thr-synth). ACCD catalyzes the conversion of 1-aminocyclopropane-1-carboxylate to alpha-ketobutyrate and ammonia. Tryptophan synthase folds into a tetramer, where the beta chain is the catalytic PLP-binding subunit and catalyzes the formation of L-tryptophan from indole and L-serine. CBS is a tetrameric hemeprotein that catalyzes condensation of serine and homocysteine to cystathionine. CS is a homodimer that catalyzes the formation of L-cysteine from O-acetyl-L-serine. Ser-dehyd catalyzes the conversion of L- or D-serine to pyruvate and ammonia. Thr-dehyd is active as a homodimer and catalyzes the conversion of L-threonine to 2-oxobutanoate and ammonia. DAL is also a homodimer and catalyzes the alpha, beta-elimination reaction of both L- and D-alpha, beta-diaminopropionate to form pyruvate and ammonia. Thr-synth catalyzes the formation of threonine and inorganic phosphate from O-phosphohomoserine.
Pssm-ID: 107202 [Multi-domain] Cd Length: 244 Bit Score: 86.80 E-value: 1.28e-20
Tryptophan synthase-beta: Tryptophan synthase is a bifunctional enzyme that catalyses the ...
26-231
1.40e-04
Tryptophan synthase-beta: Tryptophan synthase is a bifunctional enzyme that catalyses the last two steps in the biosynthesis of L-tryptophan via its alpha and beta reactions. In the alpha reaction, indole 3-glycerol phosphate is cleaved reversibly to glyceraldehyde 3-phosphate and indole at the active site of the alpha subunit. In the beta reaction, indole undergoes a PLP-dependent reaction with L-serine to form L-tryptophan at the active site of the beta subunit. Members of this CD, Trp-synth_B, are found in all three major phylogenetic divisions.
Pssm-ID: 107207 Cd Length: 365 Bit Score: 42.14 E-value: 1.40e-04
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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