1KAS
BETA-KETOACYL-ACP SYNTHASE II FROM ESCHERICHIA COLI
External Resource: Annotation
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
A | d1kasa2 | Alpha and beta proteins (a/b) | Thiolase-like | Thiolase-like | Thiolase-related | Beta-ketoacyl-ACP synthase II, C-terminal domain | (Escherichia coli ) [TaxId: 562 ], | SCOPe (2.08) |
A | d1kasa1 | Alpha and beta proteins (a/b) | Thiolase-like | Thiolase-like | Thiolase-related | Beta-ketoacyl-ACP synthase II, N-terminal domain | (Escherichia coli ) [TaxId: 562 ], | SCOPe (2.08) |
Domain Annotation: ECOD Classification ECOD Database Homepage
Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
A | ketoacyl-synt | e1kasA1 | A: a/b three-layered sandwiches | X: Thiolase-like (From Topology) | H: Thiolase-like (From Topology) | T: Thiolase-like | F: ketoacyl-synt | ECOD (1.6) |
A | Ketoacyl-synt_C_1 | e1kasA2 | A: a/b three-layered sandwiches | X: Thiolase-like (From Topology) | H: Thiolase-like (From Topology) | T: Thiolase-like | F: Ketoacyl-synt_C_1 | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
---|---|---|---|---|---|---|
A | 3.40.47.10 | Alpha Beta | 3-Layer(aba) Sandwich | Peroxisomal Thiolase | Chain A, domain 1 | CATH (4.3.0) |
Protein Family Annotation Pfam Database Homepage
Chains | Accession | Name | Description | Comments | Source |
---|---|---|---|---|---|
PF02801 | Beta-ketoacyl synthase, C-terminal domain (Ketoacyl-synt_C) | Beta-ketoacyl synthase, C-terminal domain | 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. | Domain | |
PF00109 | Beta-ketoacyl synthase, N-terminal domain (ketoacyl-synt) | Beta-ketoacyl synthase, N-terminal domain | 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 m ... | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
Chains | Accession | Name | Type |
---|---|---|---|
IPR014031 | Beta-ketoacyl synthase, C-terminal | Domain | |
IPR000794 | Beta-ketoacyl synthase | Family | |
IPR016039 | Thiolase-like | Homologous Superfamily | |
IPR018201 | Beta-ketoacyl synthase, active site | Active Site | |
IPR014030 | Beta-ketoacyl synthase-like, N-terminal | Domain | |
IPR020841 | Polyketide synthase, beta-ketoacyl synthase domain | Domain | |
IPR017568 | 3-oxoacyl-[acyl-carrier-protein] synthase 2 | Family |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
Chains | Enzyme Name | Description | Catalytic 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. . | Defined by 6 residues: CYS:A-163HIS:A-303GLU:A-314LYS:A-335HIS:A-340PHE:A-400 | EC: 2.3.1.41 (PDB Primary Data) EC: 2.3.1.179 (UniProt) |