6WH9 | pdb_00006wh9

Ketoreductase from module 1 of the 6-deoxyerythronolide B synthase (KR1) in complex with antibody fragment (Fab) 1D10

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
SAbDab Antibody Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
G [auth I]	d6wh9i2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
G [auth I]	d6wh9i1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E [auth C]	d6wh9c2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E [auth C]	d6wh9c1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C [auth F]	d6wh9f2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C [auth F]	d6wh9f1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
I [auth A]	d6wh9a2	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Tyrosine-dependent oxidoreductases	Erythromycin synthase, eryAI, 1st ketoreductase module, C-terminal domain	(Saccharopolyspora erythraea ) [TaxId: 1836 ],	SCOPe (2.08)
I [auth A]	d6wh9a1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Tyrosine-dependent oxidoreductases	Erythromycin synthase, eryAI, 1st ketoreductase module, N-terminal domain	(Saccharopolyspora erythraea ) [TaxId: 1836 ],	SCOPe (2.08)
H [auth D]	d6wh9d2	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Tyrosine-dependent oxidoreductases	Erythromycin synthase, eryAI, 1st ketoreductase module, C-terminal domain	(Saccharopolyspora erythraea ) [TaxId: 1836 ],	SCOPe (2.08)
H [auth D]	d6wh9d1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Tyrosine-dependent oxidoreductases	Erythromycin synthase, eryAI, 1st ketoreductase module, N-terminal domain	(Saccharopolyspora erythraea ) [TaxId: 1836 ],	SCOPe (2.08)
H [auth D]	d6wh9d3	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Saccharopolyspora erythraea ) [TaxId: 1836 ],	SCOPe (2.08)
A [auth G]	d6wh9g2	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Tyrosine-dependent oxidoreductases	Erythromycin synthase, eryAI, 1st ketoreductase module, C-terminal domain	(Saccharopolyspora erythraea ) [TaxId: 1836 ],	SCOPe (2.08)
A [auth G]	d6wh9g1	Alpha and beta proteins (a/b)	NAD(P)-binding Rossmann-fold domains	NAD(P)-binding Rossmann-fold domains	Tyrosine-dependent oxidoreductases	Erythromycin synthase, eryAI, 1st ketoreductase module, N-terminal domain	(Saccharopolyspora erythraea ) [TaxId: 1836 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
I [auth A]	SCOP2B Superfamily	SDR-like	8000377	3000038	SCOP2B (2022-06-29)
H [auth D]	SCOP2B Superfamily	SDR-like	8000377	3000038	SCOP2B (2022-06-29)
A [auth G]	SCOP2B Superfamily	SDR-like	8000377	3000038	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
G [auth I]	Ldh_1_C	e6wh9I1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ldh_1_C	ECOD (develop294)
E [auth C]	Ldh_1_C	e6wh9C1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ldh_1_C	ECOD (develop294)
C [auth F]	Ldh_1_C	e6wh9F1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ldh_1_C	ECOD (develop294)
F [auth H]	Ldh_1_C	e6wh9H1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ldh_1_C	ECOD (develop294)
D [auth B]	Ldh_1_C	e6wh9B1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ldh_1_C	ECOD (develop294)
B [auth E]	Ldh_1_C	e6wh9E1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ldh_1_C	ECOD (develop294)
I [auth A]	Ldh_1_C	e6wh9A1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ldh_1_C	ECOD (develop294)
H [auth D]	Ldh_1_C	e6wh9D1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ldh_1_C	ECOD (develop294)
A [auth G]	Ldh_1_C	e6wh9G1	A: alpha bundles	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: Ldh_1_C	ECOD (develop294)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
G [auth I]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
E [auth C]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
C [auth F]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
F [auth H]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
D [auth B]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)
B [auth E]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (utative)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
C [auth F], E [auth C], G [auth I]	Fab 1D10, anti-KR1	L-LAMBDA	Homo sapiens (human)	IGLV7-4601, IGLJ302, IGLC3*03	V-DOMAIN V-LAMBDA, C-DOMAIN C-LAMBDA	IG	FAB-GAMMA-1_LAMBDA	IMGT (202610-0)
B [auth E], D [auth B], F [auth H]	Fab 1D10, anti-KR1	VH-CH1	Homo sapiens (human)	IGHV1-1801, IGHV1-1804, IGHJ302, IGHG101, IGHG102, IGHG104, IGHG105, IGHG112, IGHG114, IGHG113, IGHG109, IGHG110, IGHG107, IGHG111	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_LAMBDA	IMGT (202610-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth F], E [auth C], G [auth I]	Light Chain	IGLV7	Lambda	kr1	SAbDab (2026-03-20)
B [auth E], D [auth B], F [auth H]	Heavy Chain	IGHV1	-	kr1	SAbDab (2026-03-20)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth F], E [auth C], G [auth I]	1D10 (Fab light chain)	-	-	-
B [auth E], D [auth B], F [auth H]	1D10 (Fab heavy chain)	-	-	-
A [auth G], H [auth D], I [auth A]	KR1	acyltransferase activity erythronolide synthase activity acyltransferase activity, transferring groups other than amino-acyl groups transferase activity catalytic activity vitamin binding modified amino acid binding binding ion binding anion binding phosphopantetheine binding sulfur compound binding small molecule binding fatty acid synthase activity acyltransferase activity erythronolide synthase activity acyltransferase activity, transferring groups other than amino-acyl groups transferase activity catalytic activity vitamin binding modified amino acid binding binding ion binding anion binding phosphopantetheine binding sulfur compound 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 [auth G], H [auth D], I [auth A]	IPR014031	Beta-ketoacyl synthase, C-terminal domain	Domain
A [auth G], H [auth D], I [auth A]	IPR016035	Acyl transferase/acyl hydrolase/lysophospholipase	Homologous Superfamily
A [auth G], H [auth D], I [auth A]	IPR006162	Phosphopantetheine attachment site	PTM
A [auth G], H [auth D], I [auth A]	IPR032821	Polyketide synthase, C-terminal extension	Domain
A [auth G], H [auth D], I [auth A]	IPR057326	Ketoreductase domain	Domain
A [auth G], H [auth D], I [auth A]	IPR009081	Phosphopantetheine binding ACP domain	Domain
A [auth G], H [auth D], I [auth A]	IPR020806	Polyketide synthase-like, phosphopantetheine-binding domain	Domain
A [auth G], H [auth D], I [auth A]	IPR014030	Beta-ketoacyl synthase-like, N-terminal domain	Domain
A [auth G], H [auth D], I [auth A]	IPR013968	Polyketide synthase-like, ketoreductase domain	Domain
A [auth G], H [auth D], I [auth A]	IPR016039	Thiolase-like	Homologous Superfamily
A [auth G], H [auth D], I [auth A]	IPR001227	Acyl transferase domain superfamily	Homologous Superfamily
A [auth G], H [auth D], I [auth A]	IPR016036	Malonyl-CoA ACP transacylase, ACP-binding	Homologous Superfamily
A [auth G], H [auth D], I [auth A]	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A [auth G], H [auth D], I [auth A]	IPR050091	Polyketide and Nonribosomal Peptide Biosynthesis Enzymes	Family
A [auth G], H [auth D], I [auth A]	IPR018201	Beta-ketoacyl synthase, active site	Active Site
A [auth G], H [auth D], I [auth A]	IPR020841	Polyketide synthase, beta-ketoacyl synthase domain	Domain
A [auth G], H [auth D], I [auth A]	IPR036736	ACP-like superfamily	Homologous Superfamily
A [auth G], H [auth D], I [auth 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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.