1G6V | pdb_00001g6v

Complex of the camelid heavy-chain antibody fragment CAB-CA05 with bovine carbonic anhydrase

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)
A	d1g6va_	All beta proteins	Carbonic anhydrase	Carbonic anhydrase	Carbonic anhydrase	Carbonic anhydrase	(Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
B [auth K]	d1g6vk_	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	V set domains (antibody variable domain-like)	Camelid IG heavy chain variable domain, VHh	Arabian camel (Camelus dromedarius ) [TaxId: 9838 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Carbonic anhydrase	8035651	3001672	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)
A	PABP	e1g6vA1	A: a/b three-layered sandwiches	X: HTH	H: PABC(PABP) domain	T: PABC(PABP) domain	F: PABP	ECOD (v294.1)
B [auth K]	Copper-bind	e1g6vK1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Copper-bind	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.200.10	Alpha Beta	Roll	Carbonic Anhydrase II	Alpha carbonic anhydrase	CATH (4.3.0)
B [auth K]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	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
B [auth K]	Cab-CA05	VH	Camelus dromedarius (Arabian camel)	IGHV3S4501, IGHJ401	V-DOMAIN VH	IG	(VH)	IMGT (202612-0)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B [auth K]	Heavy Chain	IGHV1	-	carbonic anhydrase	SAbDab (2026-03-27)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00194	Eukaryotic-type carbonic anhydrase (Carb_anhydrase)	Eukaryotic-type carbonic anhydrase		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	CARBONIC ANHYDRASE	cyanamide hydratase activity hydro-lyase activity lyase activity catalytic activity carbon-oxygen lyase activity cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding carbonate dehydratase activity	regulation of localization nitrogen compound transport regulation of dipeptide transmembrane transport regulation of cellular process regulation of dipeptide transport transport positive regulation of biological process oligopeptide transmembrane transport localization dipeptide transport regulation of oligopeptide transport positive regulation of transmembrane transport positive regulation of dipeptide transmembrane transport positive regulation of cellular process regulation of localization nitrogen compound transport regulation of dipeptide transmembrane transport regulation of cellular process regulation of dipeptide transport transport positive regulation of biological process oligopeptide transmembrane transport localization dipeptide transport regulation of oligopeptide transport positive regulation of transmembrane transport positive regulation of dipeptide transmembrane transport positive regulation of cellular process regulation of biological process regulation of transport oligopeptide transport regulation of peptide transport biological regulation establishment of localization peptide transport transmembrane transport regulation of transmembrane transport positive regulation of transport positive regulation of dipeptide transport positive regulation of oligopeptide transport cellular process dipeptide transmembrane transport one-carbon compound transport gas transport carbon dioxide transport regulation of monoatomic ion transport regulation of monoatomic anion transport monoatomic anion transport monoatomic ion transport homeostatic process regulation of intracellular pH cellular homeostasis chemical homeostasis intracellular monoatomic cation homeostasis regulation of pH monoatomic ion homeostasis intracellular chemical homeostasis regulation of biological quality monoatomic cation homeostasis intracellular monoatomic ion homeostasis cellular response to stimulus cellular response to nitrogen compound response to angiotensin response to stimulus signaling response to peptide hormone angiotensin-activated signaling pathway cellular response to angiotensin cell communication cellular response to endogenous stimulus response to hormone signal transduction cellular response to hormone stimulus response to endogenous stimulus response to oxygen-containing compound cellular response to peptide hormone stimulus response to nitrogen compound cellular response to oxygen-containing compound cellular response to chemical stimulus response to chemical G protein-coupled receptor signaling pathway	cellular anatomical structure apical part of cell cell periphery plasma membrane membrane intracellular anatomical structure cytoplasm
B [auth K]	ANTIBODY HEAVY CHAIN	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR018338	Carbonic anhydrase, alpha-class, conserved site	Conserved Site
A	IPR001148	Alpha carbonic anhydrase domain	Domain
A	IPR036398	Alpha carbonic anhydrase domain superfamily	Homologous Superfamily
A	IPR023561	Carbonic anhydrase, alpha-class	Family

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.