8EE0 | pdb_00008ee0

KS-AT didomain from module 2 of the 6-deoxyerythronolide B synthase in complex with antibody fragment 1B2

External Resource: Annotation

Domain Annotation: CATH
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
A	3.40.47.10	Alpha Beta	3-Layer(aba) Sandwich	Peroxisomal Thiolase	Chain A, domain 1	CATH (utative)
A	3.30.70.3290	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits		CATH (utative)
A	3.40.366.10	Alpha Beta	3-Layer(aba) Sandwich	Malonyl-Coenzyme A Acyl Carrier Protein	domain 2	CATH (utative)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth H]	Heavy Chain	IGHV3	-	6-deoxyerythronolide b synthase	SAbDab (2025-12-05)
B [auth L]	Light Chain	IGKV2	Kappa	6-deoxyerythronolide b synthase	SAbDab (2025-12-05)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	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
A	PF22621	CurL-like, PKS C-terminal (CurL-like_PKS_C)	CurL-like, PKS C-terminal	This entry represents the polyketide synthase C-terminal extension from cyanobacterial CurL polyketide synthase and similar proteins from other bacteria and fungi [1-5].	Domain
A	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 ...	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
A	PF00698	Acyl transferase domain (Acyl_transf_1)	Acyl transferase domain		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth H]	1B2 antibody heavy chain	-	-	-
B [auth L]	1B2 antibody light chain	-	-	-
A	6-deoxyerythronolide B synthase	acyltransferase activity erythronolide synthase activity acyltransferase activity, transferring groups other than amino-acyl groups transferase activity catalytic activity vitamin binding amide binding modified amino acid binding binding phosphopantetheine binding small molecule binding fatty acid synthase activity 3-oxoacyl-[acyl-carrier-protein] synthase activity	fatty acid metabolic process monocarboxylic acid biosynthetic process small molecule biosynthetic process oxoacid metabolic process carboxylic acid metabolic process lipid biosynthetic process primary metabolic process organic acid biosynthetic process organic acid metabolic process fatty acid biosynthetic process carboxylic acid biosynthetic process biosynthetic process small molecule metabolic process metabolic process fatty acid metabolic process monocarboxylic acid biosynthetic process small molecule biosynthetic process oxoacid metabolic process carboxylic acid metabolic process lipid biosynthetic process primary metabolic process organic acid biosynthetic process organic acid metabolic process fatty acid biosynthetic process carboxylic acid biosynthetic process biosynthetic process small molecule metabolic process metabolic process cellular process monocarboxylic acid metabolic process lipid metabolic process macrolide biosynthetic process polyketide metabolic process macrolide metabolic process secondary metabolic process antibiotic biosynthetic process antibiotic metabolic process polyketide biosynthetic process secondary metabolite biosynthetic process lactone metabolic process lactone biosynthetic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR016035	Acyl transferase/acyl hydrolase/lysophospholipase	Homologous Superfamily
A	IPR014031	Beta-ketoacyl synthase, C-terminal	Domain
A	IPR006162	Phosphopantetheine attachment site	PTM
A	IPR032821	Polyketide synthase, C-terminal extension	Domain
A	IPR009081	Phosphopantetheine binding ACP domain	Domain
A	IPR020806	Polyketide synthase-like, phosphopantetheine-binding domain	Domain
A	IPR013968	Polyketide synthase-like, ketoreductase domain	Domain
A	IPR016039	Thiolase-like	Homologous Superfamily
A	IPR001227	Acyl transferase domain superfamily	Homologous Superfamily
A	IPR016036	Malonyl-CoA ACP transacylase, ACP-binding	Homologous Superfamily
A	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A	IPR050091	Polyketide and Nonribosomal Peptide Biosynthesis Enzymes	Family
A	IPR018201	Beta-ketoacyl synthase, active site	Active Site
A	IPR014030	Beta-ketoacyl synthase-like, N-terminal	Domain
A	IPR020841	Polyketide synthase, beta-ketoacyl synthase domain	Domain
A	IPR036736	ACP-like superfamily	Homologous Superfamily
A	IPR014043	Acyl transferase domain	Domain

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.