4IMP

The missing linker: a dimerization motif located within polyketide synthase modules

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
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	EUF08195	e4impA1	A: alpha duplicates or obligate multimers	X: Dimerization element domain in modular polyketide synthases (From Topology)	H: Dimerization element domain in modular polyketide synthases (From Topology)	T: Dimerization element domain in modular polyketide synthases	F: EUF08195	ECOD (1.6)
A	KR_1_SDR_x	e4impA3	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: KR_1_SDR_x	ECOD (1.6)
A	adh_short_C2_1	e4impA2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: adh_short_C2_1	ECOD (1.6)
B	EUF08195	e4impB1	A: alpha duplicates or obligate multimers	X: Dimerization element domain in modular polyketide synthases (From Topology)	H: Dimerization element domain in modular polyketide synthases (From Topology)	T: Dimerization element domain in modular polyketide synthases	F: EUF08195	ECOD (1.6)
B	KR_1_SDR_x	e4impB2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: KR_1_SDR_x	ECOD (1.6)
B	adh_short_C2_1	e4impB3	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: adh_short_C2_1	ECOD (1.6)
C	EUF08195	e4impC6	A: alpha duplicates or obligate multimers	X: Dimerization element domain in modular polyketide synthases (From Topology)	H: Dimerization element domain in modular polyketide synthases (From Topology)	T: Dimerization element domain in modular polyketide synthases	F: EUF08195	ECOD (1.6)
C	KR_1_SDR_x	e4impC4	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: KR_1_SDR_x	ECOD (1.6)
C	adh_short_C2_1	e4impC5	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: adh_short_C2_1	ECOD (1.6)
D	EUF08195	e4impD6	A: alpha duplicates or obligate multimers	X: Dimerization element domain in modular polyketide synthases (From Topology)	H: Dimerization element domain in modular polyketide synthases (From Topology)	T: Dimerization element domain in modular polyketide synthases	F: EUF08195	ECOD (1.6)
D	KR_1_SDR_x	e4impD4	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: KR_1_SDR_x	ECOD (1.6)
D	adh_short_C2_1	e4impD5	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: NAD(P)-binding Rossmann-fold domains	F: adh_short_C2_1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	6.10.140.1830	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
A	3.40.50.11460	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
A	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
B	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
C	6.10.140.1830	Special	Helix non-globular	Helix Hairpins		CATH (4.3.0)
C	3.40.50.11460	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
C	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)
D	3.40.50.720	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	NAD(P)-binding Rossmann-like Domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF08659	KR domain (KR)	KR domain	-	Family
A, B, C, D	PF18369	Polyketide synthase dimerisation element domain (PKS_DE)	Polyketide synthase dimerisation element domain	This is the dimerisation element domain found in bacterial modular polyketide synthase ketoreductases [1]. The dimerization element (DE) domain is N-terminal to the KR domain Pfam:PF08659. DE domain is necessary for KR function, presumably because th ...	This is the dimerisation element domain found in bacterial modular polyketide synthase ketoreductases [1]. The dimerization element (DE) domain is N-terminal to the KR domain Pfam:PF08659. DE domain is necessary for KR function, presumably because the dimeric DE orients the KR domains for optimal activity within a module [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Polyketide synthase extender modules 3-4	binding nucleoside phosphate binding organic cyclic compound binding nucleotide binding heterocyclic compound binding small molecule binding vitamin binding amide binding modified amino acid binding phosphopantetheine binding acyltransferase activity 3-oxoacyl-[acyl-carrier-protein] synthase activity acyltransferase activity, transferring groups other than amino-acyl groups transferase activity binding nucleoside phosphate binding organic cyclic compound binding nucleotide binding heterocyclic compound binding small molecule binding vitamin binding amide binding modified amino acid binding phosphopantetheine binding acyltransferase activity 3-oxoacyl-[acyl-carrier-protein] synthase activity acyltransferase activity, transferring groups other than amino-acyl groups transferase activity catalytic activity fatty acid synthase activity	cellular component biogenesis cellular component organization peptidoglycan-based cell wall biogenesis cellular component assembly cell wall biogenesis DIM/DIP cell wall layer assembly cell wall organization or biogenesis cellular process Actinobacterium-type cell wall biogenesis cellular component organization or biogenesis fatty acid metabolic process monocarboxylic acid biosynthetic process small molecule biosynthetic process oxoacid metabolic process cellular component biogenesis cellular component organization peptidoglycan-based cell wall biogenesis cellular component assembly cell wall biogenesis DIM/DIP cell wall layer assembly cell wall organization or biogenesis cellular process Actinobacterium-type cell wall biogenesis cellular component organization or biogenesis 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 biosynthetic process cellular lipid metabolic process small molecule metabolic process metabolic 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	cell periphery plasma membrane membrane cellular anatomical entity intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR016035	Acyl transferase/acyl hydrolase/lysophospholipase	Homologous Superfamily
A, B, C, D	IPR014031	Beta-ketoacyl synthase, C-terminal	Domain
A, B, C, D	IPR006162	Phosphopantetheine attachment site	PTM
A, B, C, D	IPR013968	Polyketide synthase, ketoreductase domain	Domain
A, B, C, D	IPR016036	Malonyl-CoA ACP transacylase, ACP-binding	Homologous Superfamily
A, B, C, D	IPR050091	Polyketide and Nonribosomal Peptide Biosynthesis Enzymes	Family
A, B, C, D	IPR020806	Polyketide synthase, phosphopantetheine-binding domain	Domain
A, B, C, D	IPR020841	Polyketide synthase, beta-ketoacyl synthase domain	Domain
A, B, C, D	IPR036736	ACP-like superfamily	Homologous Superfamily
A, B, C, D	IPR014043	Acyl transferase domain	Domain
A, B, C, D	IPR041618	Polyketide synthase dimerisation element domain	Domain
A, B, C, D	IPR015083	Polyketide synthase, docking domain	Domain
A, B, C, D	IPR032821	Polyketide synthase, C-terminal extension	Domain
A, B, C, D	IPR009081	Phosphopantetheine binding ACP domain	Domain
A, B, C, D	IPR036299	Polyketide synthase, docking domain superfmaily	Homologous Superfamily
A, B, C, D	IPR016039	Thiolase-like	Homologous Superfamily
A, B, C, D	IPR001227	Acyl transferase domain superfamily	Homologous Superfamily
A, B, C, D	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A, B, C, D	IPR018201	Beta-ketoacyl synthase, active site	Active Site
A, B, C, D	IPR014030	Beta-ketoacyl synthase-like, N-terminal	Domain