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

ChainsDomain InfoClassFoldSuperfamilyFamilyDomainSpeciesProvenance Source (Version)
Ad1dd8a2 Alpha and beta proteins (a/b) Thiolase-like Thiolase-like Thiolase-related Beta-ketoacyl-ACP synthase I, C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Ad1dd8a1 Alpha and beta proteins (a/b) Thiolase-like Thiolase-like Thiolase-related Beta-ketoacyl-ACP synthase I, N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Bd1dd8b2 Alpha and beta proteins (a/b) Thiolase-like Thiolase-like Thiolase-related Beta-ketoacyl-ACP synthase I, C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Bd1dd8b1 Alpha and beta proteins (a/b) Thiolase-like Thiolase-like Thiolase-related Beta-ketoacyl-ACP synthase I, N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Cd1dd8c2 Alpha and beta proteins (a/b) Thiolase-like Thiolase-like Thiolase-related Beta-ketoacyl-ACP synthase I, C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Cd1dd8c1 Alpha and beta proteins (a/b) Thiolase-like Thiolase-like Thiolase-related Beta-ketoacyl-ACP synthase I, N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Dd1dd8d2 Alpha and beta proteins (a/b) Thiolase-like Thiolase-like Thiolase-related Beta-ketoacyl-ACP synthase I, C-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)
Dd1dd8d1 Alpha and beta proteins (a/b) Thiolase-like Thiolase-like Thiolase-related Beta-ketoacyl-ACP synthase I, N-terminal domain (Escherichia coli ) [TaxId: 562 ], SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyThiolase-like 8037440 3000122 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyThiolase-like 8037437 3000122 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyThiolase-like 8037440 3000122 SCOP2B (2022-06-29)
BSCOP2B SuperfamilyThiolase-like 8037437 3000122 SCOP2B (2022-06-29)
CSCOP2B SuperfamilyThiolase-like 8037437 3000122 SCOP2B (2022-06-29)
CSCOP2B SuperfamilyThiolase-like 8037440 3000122 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyThiolase-like 8037437 3000122 SCOP2B (2022-06-29)
DSCOP2B SuperfamilyThiolase-like 8037440 3000122 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
Aketoacyl-synte1dd8A1 A: a/b three-layered sandwichesX: Thiolase-like (From Topology)H: Thiolase-like (From Topology)T: Thiolase-likeF: ketoacyl-syntECOD (1.6)
AKetoacyl-synt_Ce1dd8A2 A: a/b three-layered sandwichesX: Thiolase-like (From Topology)H: Thiolase-like (From Topology)T: Thiolase-likeF: Ketoacyl-synt_CECOD (1.6)
Bketoacyl-synte1dd8B1 A: a/b three-layered sandwichesX: Thiolase-like (From Topology)H: Thiolase-like (From Topology)T: Thiolase-likeF: ketoacyl-syntECOD (1.6)
BKetoacyl-synt_Ce1dd8B2 A: a/b three-layered sandwichesX: Thiolase-like (From Topology)H: Thiolase-like (From Topology)T: Thiolase-likeF: Ketoacyl-synt_CECOD (1.6)
Cketoacyl-synte1dd8C1 A: a/b three-layered sandwichesX: Thiolase-like (From Topology)H: Thiolase-like (From Topology)T: Thiolase-likeF: ketoacyl-syntECOD (1.6)
CKetoacyl-synt_Ce1dd8C2 A: a/b three-layered sandwichesX: Thiolase-like (From Topology)H: Thiolase-like (From Topology)T: Thiolase-likeF: Ketoacyl-synt_CECOD (1.6)
Dketoacyl-synte1dd8D1 A: a/b three-layered sandwichesX: Thiolase-like (From Topology)H: Thiolase-like (From Topology)T: Thiolase-likeF: ketoacyl-syntECOD (1.6)
DKetoacyl-synt_Ce1dd8D2 A: a/b three-layered sandwichesX: Thiolase-like (From Topology)H: Thiolase-like (From Topology)T: Thiolase-likeF: Ketoacyl-synt_CECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B, C, D
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
A, B, C, D
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
A, B, C, D
BETA-KETOACYL [ACYL CARRIER PROTEIN] SYNTHASE I

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

ChainsEnzyme NameDescriptionCatalytic Residues
beta-ketoacyl-[acyl carrier protein] synthase I  M-CSA #292

Beta-ketoacyl-acyl carrier protein synthase (KAS) I catalyses the Claisen condensation between acyl-ACP and malonyl-ACP to produce free acyl carrier protein (ACP), 3-oxoacyl ACP, and carbon dioxide. KAS I fuctions, together with KAS II and KAS III, to synthesise C16 and C18 fatty acids in plant plastids: KAS III is specific for the first step of the elongation and uses a CoA-activated primer substrate, while KAS I extends C4 to C16 in six rounds of elongation using an ACP substrate. KAS II then carries out an additional step to yield C18. In Escherichia coli, KAS I is essential for the construction of the unsaturated fatty acids characterising Escherichia coli membrane lipids.

Defined by 6 residues: CYS:A-163HIS:A-298LYS:A-328HIS:A-333PHE:A-390PHE:A-392
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