3F5H

Crystal structure of fused docking domains from PikAIII and PikAIV of the pikromycin polyketide synthase

External Resource: Annotation

Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	F_UNCLASSIFIED	e3f5hA2	A: alpha duplicates or obligate multimers	X: Docking domains in modular polyketide synthases	H: Class 1 C-terminal docking domain (From Topology)	T: Class 1 C-terminal docking domain	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF08990	e3f5hA1	A: alpha duplicates or obligate multimers	X: Docking domains in modular polyketide synthases	H: Class 1 N-terminal docking domain (From Topology)	T: Class 1 N-terminal docking domain	F: PF08990	ECOD (1.6)
B	F_UNCLASSIFIED	e3f5hB1	A: alpha duplicates or obligate multimers	X: Docking domains in modular polyketide synthases	H: Class 1 C-terminal docking domain (From Topology)	T: Class 1 C-terminal docking domain	F: F_UNCLASSIFIED	ECOD (1.6)
B	PF08990	e3f5hB2	A: alpha duplicates or obligate multimers	X: Docking domains in modular polyketide synthases	H: Class 1 N-terminal docking domain (From Topology)	T: Class 1 N-terminal docking domain	F: PF08990	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	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, B	PF08990	Erythronolide synthase docking domain (Docking)	Erythronolide synthase docking domain	Polyketide synthase (PKS) catalyzes the biosynthesis of polyketides, which are structurally and functionally diverse natural products in microorganisms and plants [1]. Type I modular PKSs are the large, multifunctional enzymes responsible for the pro ...	Polyketide synthase (PKS) catalyzes the biosynthesis of polyketides, which are structurally and functionally diverse natural products in microorganisms and plants [1]. Type I modular PKSs are the large, multifunctional enzymes responsible for the production of a diverse family of structurally rich and often biologically active natural products. The efficiency of acyl transfer at the interfaces of the individual PKS proteins is thought to be governed by helical regions, termed docking domains (dd). Two such N-terminal domains dimerise to form amphipathic parallel alpha-helical coiled coils: dimerisation is essential for protein function [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Type I polyketide synthase PikAIII, Type I polyketide synthase PikAIV fusion protein	vitamin binding amide binding modified amino acid binding binding phosphopantetheine binding small molecule binding acyltransferase activity acyltransferase activity, transferring groups other than amino-acyl groups transferase activity catalytic activity 3-oxoacyl-[acyl-carrier-protein] synthase activity identical protein binding protein binding	fatty acid metabolic process monocarboxylic acid biosynthetic process small molecule biosynthetic process oxoacid metabolic process cellular biosynthetic process cellular 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 organic substance metabolic process biosynthetic process fatty acid metabolic process monocarboxylic acid biosynthetic process small molecule biosynthetic process oxoacid metabolic process cellular biosynthetic process cellular 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 organic substance metabolic process biosynthetic process organic substance biosynthetic process cellular lipid metabolic 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 organic cyclic compound metabolic process antibiotic metabolic process polyketide biosynthetic process secondary metabolite biosynthetic process lactone metabolic process lactone biosynthetic process organic cyclic compound biosynthetic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR016035	Acyl transferase/acyl hydrolase/lysophospholipase	Homologous Superfamily
A, B	IPR014031	Beta-ketoacyl synthase, C-terminal	Domain
A, B	IPR006162	Phosphopantetheine attachment site	PTM
A, B	IPR015083	Polyketide synthase, docking domain	Domain
A, B	IPR032821	Polyketide synthase, C-terminal extension	Domain
A, B	IPR009081	Phosphopantetheine binding ACP domain	Domain
A, B	IPR014030	Beta-ketoacyl synthase, N-terminal	Domain
A, B	IPR036299	Polyketide synthase, docking domain superfmaily	Homologous Superfamily
A, B	IPR013968	Polyketide synthase, ketoreductase domain	Domain
A, B	IPR016039	Thiolase-like	Homologous Superfamily
A, B	IPR001227	Acyl transferase domain superfamily	Homologous Superfamily
A, B	IPR016036	Malonyl-CoA ACP transacylase, ACP-binding	Homologous Superfamily
A, B	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A, B	IPR020806	Polyketide synthase, phosphopantetheine-binding domain	Domain
A, B	IPR014043	Acyl transferase	Domain
A, B	IPR018201	Beta-ketoacyl synthase, active site	Active Site
A, B	IPR020841	Polyketide synthase, beta-ketoacyl synthase domain	Domain
A, B	IPR036736	ACP-like superfamily	Homologous Superfamily
A, B	IPR016035	Acyl transferase/acyl hydrolase/lysophospholipase	Homologous Superfamily
A, B	IPR014031	Beta-ketoacyl synthase, C-terminal	Domain
A, B	IPR015083	Polyketide synthase, docking domain	Domain
A, B	IPR032821	Polyketide synthase, C-terminal extension	Domain
A, B	IPR009081	Phosphopantetheine binding ACP domain	Domain
A, B	IPR014030	Beta-ketoacyl synthase, N-terminal	Domain
A, B	IPR029058	Alpha/Beta hydrolase fold	Homologous Superfamily
A, B	IPR020802	Polyketide synthase, thioesterase domain	Domain
A, B	IPR016039	Thiolase-like	Homologous Superfamily
A, B	IPR001227	Acyl transferase domain superfamily	Homologous Superfamily
A, B	IPR016036	Malonyl-CoA ACP transacylase, ACP-binding	Homologous Superfamily
A, B	IPR020806	Polyketide synthase, phosphopantetheine-binding domain	Domain
A, B	IPR014043	Acyl transferase	Domain
A, B	IPR018201	Beta-ketoacyl synthase, active site	Active Site
A, B	IPR020841	Polyketide synthase, beta-ketoacyl synthase domain	Domain
A, B	IPR036736	ACP-like superfamily	Homologous Superfamily
A, B	IPR001031	Thioesterase	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 R01GM133198.

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3F5H

Crystal structure of fused docking domains from PikAIII and PikAIV of the pikromycin polyketide synthase

External Resource: Annotation

Domain Annotation: ECOD Classification ECOD Database Homepage

Protein Family Annotation Pfam Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage