threonine synthase catalyzes the final step of threonine biosynthesis, the gamma-elimination of phosphate from L-phosphohomoserine and the beta-addition of water to produce L-threonine
Threonine synthase catalyzes the final step of threonine biosynthesis. The conversion of ...
2-458
0e+00
Threonine synthase catalyzes the final step of threonine biosynthesis. The conversion of O-phosphohomoserine into threonine and inorganic phosphate is pyridoxal 5'-phosphate dependent. The Thr-synth_1 CD includes members from higher plants, cyanobacteria, archaebacteria and eubacterial groups. This CD, Thr-synth_2, includes enzymes from fungi and eubacterial groups, as well as, metazoan threonine synthase-like proteins.
:
Pssm-ID: 107203 [Multi-domain] Cd Length: 460 Bit Score: 667.02 E-value: 0e+00
Threonine synthase catalyzes the final step of threonine biosynthesis. The conversion of ...
2-458
0e+00
Threonine synthase catalyzes the final step of threonine biosynthesis. The conversion of O-phosphohomoserine into threonine and inorganic phosphate is pyridoxal 5'-phosphate dependent. The Thr-synth_1 CD includes members from higher plants, cyanobacteria, archaebacteria and eubacterial groups. This CD, Thr-synth_2, includes enzymes from fungi and eubacterial groups, as well as, metazoan threonine synthase-like proteins.
Pssm-ID: 107203 [Multi-domain] Cd Length: 460 Bit Score: 667.02 E-value: 0e+00
threonine synthase; Involved in threonine biosynthesis it catalyses the reaction ...
89-419
5.00e-60
threonine synthase; Involved in threonine biosynthesis it catalyses the reaction O-PHOSPHO-L-HOMOSERINE + H(2)O = L-THREONINE + ORTHOPHOSPHATE using pyridoxal phosphate as a cofactor. the enzyme is distantly related to the serine/threonine dehydratases which are also pyridoxal-phosphate dependent enzymes. the pyridoxal-phosphate binding site is a Lys (K) residues present at residue 70 of the model. [Amino acid biosynthesis, Aspartate family]
Pssm-ID: 272986 [Multi-domain] Cd Length: 327 Bit Score: 199.53 E-value: 5.00e-60
Threonine synthase catalyzes the final step of threonine biosynthesis. The conversion of ...
2-458
0e+00
Threonine synthase catalyzes the final step of threonine biosynthesis. The conversion of O-phosphohomoserine into threonine and inorganic phosphate is pyridoxal 5'-phosphate dependent. The Thr-synth_1 CD includes members from higher plants, cyanobacteria, archaebacteria and eubacterial groups. This CD, Thr-synth_2, includes enzymes from fungi and eubacterial groups, as well as, metazoan threonine synthase-like proteins.
Pssm-ID: 107203 [Multi-domain] Cd Length: 460 Bit Score: 667.02 E-value: 0e+00
threonine synthase; Involved in threonine biosynthesis it catalyses the reaction ...
89-419
5.00e-60
threonine synthase; Involved in threonine biosynthesis it catalyses the reaction O-PHOSPHO-L-HOMOSERINE + H(2)O = L-THREONINE + ORTHOPHOSPHATE using pyridoxal phosphate as a cofactor. the enzyme is distantly related to the serine/threonine dehydratases which are also pyridoxal-phosphate dependent enzymes. the pyridoxal-phosphate binding site is a Lys (K) residues present at residue 70 of the model. [Amino acid biosynthesis, Aspartate family]
Pssm-ID: 272986 [Multi-domain] Cd Length: 327 Bit Score: 199.53 E-value: 5.00e-60
Tryptophan synthase beta superfamily (fold type II); this family of pyridoxal phosphate (PLP) ...
92-413
8.99e-36
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: 132.64 E-value: 8.99e-36
Pyridoxal-phosphate dependent enzyme; Members of this family are all pyridoxal-phosphate ...
92-411
1.24e-21
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: 94.69 E-value: 1.24e-21
Threonine synthase is a pyridoxal phosphate (PLP) dependent enzyme that catalyses the last ...
107-269
4.63e-07
Threonine synthase is a pyridoxal phosphate (PLP) dependent enzyme that catalyses the last reaction in the synthesis of threonine from aspartate. It proceeds by converting O-phospho-L-homoserine (OPH) into threonine and inorganic phosphate. In plants, OPH is an intermediate between the methionine and threonine/isoleucine pathways. Thus threonine synthase competes for OPH with cystathionine-gamma-synthase, the first enzyme in the methionine pathway. These enzymes are in general dimers. Members of this CD, Thr-synth_1, are widely distributed in bacteria, archaea and higher plants.
Pssm-ID: 107206 [Multi-domain] Cd Length: 324 Bit Score: 51.44 E-value: 4.63e-07
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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