Annotations: 2LTQ

High resolution structure of DsbB C41S by joint calculation with solid-state NMR and X-ray data

External Resource: Annotation

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
Membrane Protein Annotation: OPM
Membrane Protein Annotation: MemProtMD
Membrane Protein Annotation: mpstruc

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
D	SCOP2B Superfamily	DsbB-like	8033051	3001302	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	DsbB-like	8033051	3001302	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)
F	FtsJ	e2ltqF1	A: alpha arrays	X: beta-Grasp	H: Ubiquitin-related	T: Ubiquitin-like	F: FtsJ	ECOD (v295.2)
C	RimK	e2ltqC1	A: alpha arrays	X: Alpha-beta plaits	H: Family B DNA polymerase insertion domain	T: Family B DNA polymerase insertion domain	F: RimK	ECOD (v295.2)
E	V-set	e2ltqE5	A: alpha arrays	X: Subtilisin-like	H: Subtilisin-like	T: Subtilisin-like	F: V-set	ECOD (v295.2)
B	RimK	e2ltqB1	A: alpha arrays	X: Alpha-beta plaits	H: Family B DNA polymerase insertion domain	T: Family B DNA polymerase insertion domain	F: RimK	ECOD (v295.2)
D	Melibiase_C	e2ltqD2	A: alpha arrays	X: Fusion glycoprotein F2	H: Fusion glycoprotein F2	T: Fusion glycoprotein F2	F: Melibiase_C	ECOD (v295.2)
A	RimK	e2ltqA1	A: alpha arrays	X: Alpha-beta plaits	H: Family B DNA polymerase insertion domain	T: Family B DNA polymerase insertion domain	F: RimK	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
F	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
E	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D	1.20.1550.10	Mainly Alpha	Up-down Bundle	Bromodomain-like	DsbB-like	CATH (4.3.0)
A	1.20.1550.10	Mainly Alpha	Up-down Bundle	Bromodomain-like	DsbB-like	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, F	FAB FRAGMENT	VH-CH1	Mus musculus (house mouse)	IGHV5-12-101, IGHJ401, IGHG2A01, IGHG2A02	V-DOMAIN VH, C-DOMAIN CH1	IG	FAB-GAMMA-2A_KAPPA	IMGT (202637-0)
B, E	FAB FRAGMENT	L-KAPPA	Mus musculus (house mouse)	IGKV8-2101, IGKJ102, IGKJ201, IGKC01, IGKC*02	V-DOMAIN V-KAPPA, C-DOMAIN C-KAPPA	IG	FAB-GAMMA-2A_KAPPA	IMGT (202637-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C, F	Heavy Chain	IGHV5	-	disulfide bond formation protein b	SAbDab (2026-09-25)
B, E	Light Chain	IGKV8	Kappa	disulfide bond formation protein b	SAbDab (2026-09-25)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, D	PF02600	Disulfide bond formation protein DsbB (DsbB)	Disulfide bond formation protein DsbB	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C, F	Fab fragment heavy chain	-	-	-
B, E	Fab fragment light chain	-	-	-
A, D	Disulfide bond formation protein B	binding quinone binding ubiquinone binding small molecule binding oxidoreductase activity, acting on a sulfur group of donors oxidoreductase activity catalytic activity oxidoreductase activity, acting on a sulfur group of donors, quinone or similar compound as acceptor electron transfer activity disulfide oxidoreductase activity catalytic activity, acting on a protein protein-disulfide reductase activity	response to stimulus response to stress response to heat response to abiotic stimulus response to temperature stimulus protein folding biosynthetic process metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process gene expression macromolecule biosynthetic process response to stimulus response to stress response to heat response to abiotic stimulus response to temperature stimulus protein folding biosynthetic process metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process gene expression macromolecule biosynthetic process protein maturation	cell periphery cellular anatomical structure plasma membrane membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, D	IPR003752	Disulphide bond formation protein DsbB/BdbC	Family
A, D	IPR022920	Disulphide bond formation protein DsbB	Family
A, D	IPR050183	Disulfide bond formation protein B	Family
A, D	IPR023380	DsbB-like superfamily	Homologous Superfamily

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, D	OPM	Transmembrane	Alpha-helical polytopic	Disulfide bond oxidoreductase-B (DsbB)	Disulfide bond oxidoreductase-B (DsbB)

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, D	MemProtMD	Annotated as membrane protein by MemProtMD

Membrane Protein Annotation: mpstruc mpstruc Database Homepage

Chains	Resource Link	Group	Subgroup	Protein
A, D	mpstruc	TRANSMEMBRANE PROTEINS: ALPHA-HELICAL	Oxidoreductases	DsbB in POPE lipid bilayer