Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyThiolase-like 8041847 3000122 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyThiolase-like 8041846 3000122 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
Aketoacyl-synte1kasA1 A: a/b three-layered sandwichesX: Thiolase-like (From Topology)H: Thiolase-like (From Topology)T: Thiolase-likeF: ketoacyl-syntECOD (1.6)
AKetoacyl-synt_C_1e1kasA2 A: a/b three-layered sandwichesX: Thiolase-like (From Topology)H: Thiolase-like (From Topology)T: Thiolase-likeF: Ketoacyl-synt_C_1ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A3.40.47.10 Alpha Beta 3-Layer(aba) Sandwich Peroxisomal Thiolase Chain A, domain 1CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF02801Beta-ketoacyl synthase, C-terminal domain (Ketoacyl-synt_C)Beta-ketoacyl synthase, C-terminal domainThe structure of beta-ketoacyl synthase is similar to that of the thiolase family (Pfam:PF00108) and also chalcone synthase. The active site of beta-ketoacyl synthase is located between the N and C-terminal domains.Domain
PF00109Beta-ketoacyl synthase, N-terminal domain (ketoacyl-synt)Beta-ketoacyl synthase, N-terminal domainThe structure of beta-ketoacyl synthase is similar to that of the thiolase family (Pfam:PF00108) and also chalcone synthase. The active site of beta-ketoacyl synthase is located between the N and C-terminal domains. The N-terminal domain contains m ...The structure of beta-ketoacyl synthase is similar to that of the thiolase family (Pfam:PF00108) and also chalcone synthase. The active site of beta-ketoacyl synthase is located between the N and C-terminal domains. The N-terminal domain contains most of the structures involved in dimer formation and also the active site cysteine [1].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
BETA-KETOACYL ACP SYNTHASE II

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

ChainsEnzyme NameDescriptionCatalytic Residues
beta-ketoacyl-acyl-carrier-protein synthase II  M-CSA #574

In the biosynthesis of fatty acids, the beta-ketoacyl-acyl carrier protein (ACP) synthases catalyse chain elongation by the addition of two-carbon units derived from malonyl-ACP to an acyl group bound to ACP.

In Escherichia coli , the chain elongation step of fatty acid biosynthesis is carried out by at least three different enzymes, KAS I, II and III. Both KAS I and KAS II catalyse the condensation of a wide range of saturated acyl-ACPs. KAS I, however, may be responsible for a condensation reaction that cannot be catalysed by KAS II, namely elongation of C10:1, whereas KAS II is responsible for the elongation of palmoleitic acid C16:1 to cis -vaccenic acid C18:1. In E.coli, cis vaccenic acid synthesis increases upon a temperature downshift, and KAS II is believed to play a key role in this thermal regulation of fatty acid biosynthesis. KAS II is a homodimer and also known as FabF, name of gene coding for it.

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Defined by 6 residues: CYS:A-163HIS:A-303GLU:A-314LYS:A-335HIS:A-340PHE:A-400
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