Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyTryptophan synthase beta subunit-like PLP-dependent enzymes 8020618 4000798 SCOP2 (2022-06-29)
ASCOP2 FamilyAllosteric threonine deaminase C-terminal domain 8023132 4001266 SCOP2 (2022-06-29)
ASCOP2 FamilyAllosteric threonine deaminase C-terminal domain 8023133 4001266 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyTryptophan synthase beta subunit-like PLP-dependent enzymes 8032998 3001427 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyACT-like 8035512 3000006 SCOP2 (2022-06-29)
ASCOP2 SuperfamilyACT-like 8035513 3000006 SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AThr_dehydrat_Ce1tdjA1 A: a+b two layersX: Alpha-beta plaitsH: ACT-like (From Topology)T: ACT-likeF: Thr_dehydrat_CECOD (1.6)
APALPe1tdjA4 A: a/b three-layered sandwichesX: Rossmann-likeH: Tryptophan synthase beta subunit-like PLP-dependent enzymes (From Topology)T: Tryptophan synthase beta subunit-like PLP-dependent enzymesF: PALPECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.40.50.1100 Alpha Beta 3-Layer(aba) Sandwich Rossmann fold CATH (4.3.0)
A3.40.1020.10 Alpha Beta 3-Layer(aba) Sandwich Biosynthetic Threonine Deaminase domain 3CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00291Pyridoxal-phosphate dependent enzyme (PALP)Pyridoxal-phosphate dependent enzyme- Family
PF00585C-terminal regulatory domain of Threonine dehydratase (Thr_dehydrat_C)C-terminal regulatory domain of Threonine dehydrataseThreonine dehydratases Pfam:PF00291 all contain a carboxy terminal region. This region may have a regulatory role. Some members contain two copies of this region. This family is homologous to the Pfam:PF01842 domain.Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
BIOSYNTHETIC THREONINE DEAMINASE -

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
threonine ammonia-lyase (biosynthetic)  M-CSA #886

Catalyses the anaerobic formation of alpha-ketobutyrate and ammonia from threonine in a two-step reaction. The first step involved a dehydration of threonine and a production of enamine intermediates (aminocrotonate), which tautomerises to its imine form (iminobutyrate). Both intermediates are unstable and short-lived. The second step is the non-enzymatic hydrolysis of the enamine/imine intermediates to form 2-ketobutyrate and free ammonia.

Defined by 2 residues: LYS:A-62SER:A-315
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