6MLK | pdb_00006mlk

Structure of Thioesterase from DEBS with a thioesterase-specific antibody

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
Protein Family 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)
B [auth L]	d6mlkl2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B [auth L]	d6mlkl1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	(Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d6mlka_	Alpha and beta proteins (a/b)	alpha/beta-Hydrolases	alpha/beta-Hydrolases	Thioesterase domain of polypeptide, polyketide and fatty acid synthases	Erythromycin polyketide synthase	(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)
A	SCOP2B Superfamily	alpha/beta-Hydrolases	8043697	3000102	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)
C [auth H]	C1-set_1	e6mlkH2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_1	ECOD (1.6)
C [auth H]	V-set_12	e6mlkH1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_12	ECOD (1.6)
B [auth L]	C1-set_4	e6mlkL2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_4	ECOD (1.6)
B [auth L]	V-set	e6mlkL1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set	ECOD (1.6)
A	Hydrolase_4_1	e6mlkA1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Hydrolase_4_1	ECOD (1.6)

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)
B [auth L]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A	3.40.50.1820	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Alpha/Beta hydrolase fold, catalytic domain	CATH (4.3.0)

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 H]	Fab 3A6	VH-CH1	Homo sapiens (human)	IGHV4-3401, IGHV4-3402, IGHJ501, IGHG101, IGHG102, IGHG104, IGHG105, IGHG112, IGHG114, IGHG113, IGHG109, IGHG110, IGHG107, IGHG111	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-1_KAPPA	IMGT (202538-0)
B [auth L]	Fab 3A6	L-KAPPA	Homo sapiens (human)	IGKV2-2801, IGKV2D-2801, IGKJ101, IGKC01	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-1_KAPPA	IMGT (202538-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth H]	Heavy Chain	IGHV4	-	6-deoxyerythronolide-b synthase erya3, modules 5 and 6	SAbDab (2025-10-03)
B [auth L]	Light Chain	IGKV2	Kappa	6-deoxyerythronolide-b synthase erya3, modules 5 and 6	SAbDab (2025-10-03)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00975	Thioesterase domain (Thioesterase)	Thioesterase domain	Peptide synthetases are involved in the non-ribosomal synthesis of peptide antibiotics. Next to the operons encoding these enzymes, in almost all cases, are genes that encode proteins that have similarity to the type II fatty acid thioesterases of v ...	Peptide synthetases are involved in the non-ribosomal synthesis of peptide antibiotics. Next to the operons encoding these enzymes, in almost all cases, are genes that encode proteins that have similarity to the type II fatty acid thioesterases of vertebrates. There are also modules within the peptide synthetases that also share this similarity. With respect to antibiotic production, thioesterases are required for the addition of the last amino acid to the peptide antibiotic, thereby forming a cyclic antibiotic. Thioesterases (non-integrated) have molecular masses of 25-29 kDa.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth H]	Heavy chain of Fab 3A6	-	-	-
B [auth L]	Light chain of Fab 3A6	-	-	-
A	6-deoxyerythronolide-B synthase EryA3, modules 5 and 6	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 erythronolide synthase activity fatty acid 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	IPR015083	Polyketide synthase NorB/C/GfsB-E-like, docking domain	Domain
A	IPR006162	Phosphopantetheine attachment site	PTM
A	IPR016036	Malonyl-CoA ACP transacylase, ACP-binding	Homologous Superfamily
A	IPR050091	Polyketide and Nonribosomal Peptide Biosynthesis Enzymes	Family
A	IPR020841	Polyketide synthase, beta-ketoacyl synthase domain	Domain
A	IPR036736	ACP-like superfamily	Homologous Superfamily
A	IPR014043	Acyl transferase domain	Domain
A	IPR020802	Thioesterase TesA-like	Domain
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	IPR036299	Polyketide synthase, docking domain superfmaily	Homologous Superfamily
A	IPR029058	Alpha/Beta hydrolase fold	Homologous Superfamily
A	IPR013968	Polyketide synthase-like, ketoreductase domain	Domain
A	IPR016039	Thiolase-like	Homologous Superfamily
A	IPR001227	Acyl transferase domain superfamily	Homologous Superfamily
A	IPR036291	NAD(P)-binding domain superfamily	Homologous Superfamily
A	IPR018201	Beta-ketoacyl synthase, active site	Active Site
A	IPR014030	Beta-ketoacyl synthase-like, N-terminal	Domain
A	IPR001031	Thioesterase	Domain