5KKU

Crystal structure of an N-terminal dehydratase from difficidin assembly line

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	PS-DH_N	e5kkuA1	A: a+b two layers	X: Thioesterase/thiol ester dehydrase-isomerase-like	H: Thioesterase/thiol ester dehydrase-isomerase (From Topology)	T: Thioesterase/thiol ester dehydrase-isomerase	F: PS-DH_N	ECOD (1.6)
A	PS-DH_C	e5kkuA2	A: a+b two layers	X: Thioesterase/thiol ester dehydrase-isomerase-like	H: Thioesterase/thiol ester dehydrase-isomerase (From Topology)	T: Thioesterase/thiol ester dehydrase-isomerase	F: PS-DH_C	ECOD (1.6)
B	PS-DH_N	e5kkuB2	A: a+b two layers	X: Thioesterase/thiol ester dehydrase-isomerase-like	H: Thioesterase/thiol ester dehydrase-isomerase (From Topology)	T: Thioesterase/thiol ester dehydrase-isomerase	F: PS-DH_N	ECOD (1.6)
B	PS-DH_C	e5kkuB1	A: a+b two layers	X: Thioesterase/thiol ester dehydrase-isomerase-like	H: Thioesterase/thiol ester dehydrase-isomerase (From Topology)	T: Thioesterase/thiol ester dehydrase-isomerase	F: PS-DH_C	ECOD (1.6)
C	PS-DH_N	e5kkuC1	A: a+b two layers	X: Thioesterase/thiol ester dehydrase-isomerase-like	H: Thioesterase/thiol ester dehydrase-isomerase (From Topology)	T: Thioesterase/thiol ester dehydrase-isomerase	F: PS-DH_N	ECOD (1.6)
C	PS-DH_C	e5kkuC2	A: a+b two layers	X: Thioesterase/thiol ester dehydrase-isomerase-like	H: Thioesterase/thiol ester dehydrase-isomerase (From Topology)	T: Thioesterase/thiol ester dehydrase-isomerase	F: PS-DH_C	ECOD (1.6)
D	PS-DH_N	e5kkuD1	A: a+b two layers	X: Thioesterase/thiol ester dehydrase-isomerase-like	H: Thioesterase/thiol ester dehydrase-isomerase (From Topology)	T: Thioesterase/thiol ester dehydrase-isomerase	F: PS-DH_N	ECOD (1.6)
D	PS-DH_C	e5kkuD2	A: a+b two layers	X: Thioesterase/thiol ester dehydrase-isomerase-like	H: Thioesterase/thiol ester dehydrase-isomerase (From Topology)	T: Thioesterase/thiol ester dehydrase-isomerase	F: PS-DH_C	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.129.110	Alpha Beta	Roll	Thiol Ester Dehydrase	Chain A	CATH (4.3.0)
B	3.10.129.110	Alpha Beta	Roll	Thiol Ester Dehydrase	Chain A	CATH (4.3.0)
C	3.10.129.110	Alpha Beta	Roll	Thiol Ester Dehydrase	Chain A	CATH (4.3.0)
D	3.10.129.110	Alpha Beta	Roll	Thiol Ester Dehydrase	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF14765	Polyketide synthase dehydratase N-terminal domain (PS-DH)	Polyketide synthase dehydratase N-terminal domain	This entry represents the N-terminal HotDog domain of the dehydratase (DH) module of polyketide synthases [1]. Structural analysis shows these DH domains are double hotdogs in which the active site contains a histidine from the N-terminal hotdog and ...	This entry represents the N-terminal HotDog domain of the dehydratase (DH) module of polyketide synthases [1]. Structural analysis shows these DH domains are double hotdogs in which the active site contains a histidine from the N-terminal hotdog and an aspartate from the C-terminal hotdog. Studies have uncovered that a substrate tunnel formed between the DH domains may be essential for loading substrates and unloading products [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 type I	vitamin binding amide binding modified amino acid binding binding phosphopantetheine binding small molecule 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 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 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 cellular process monocarboxylic acid metabolic process lipid metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR014031	Beta-ketoacyl synthase, C-terminal	Domain
A, B, C, D	IPR006162	Phosphopantetheine attachment site	PTM
A, B, C, D	IPR009081	Phosphopantetheine binding ACP domain	Domain
A, B, C, D	IPR049552	Polyketide synthase, dehydratase domain, N-terminal	Domain
A, B, C, D	IPR049551	Polyketide synthase, dehydratase domain, C-terminal	Domain
A, B, C, D	IPR013968	Polyketide synthase, ketoreductase domain	Domain
A, B, C, D	IPR016039	Thiolase-like	Homologous Superfamily
A, B, C, D	IPR036291	NAD(P)-binding domain superfamily	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	IPR018201	Beta-ketoacyl synthase, active site	Active Site
A, B, C, D	IPR014030	Beta-ketoacyl synthase-like, N-terminal	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	IPR042104	Polyketide synthase, dehydratase domain superfamily	Homologous Superfamily
A, B, C, D	IPR049900	Polyketide/metazoan fatty acid synthase, dehydratase 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.