Annotations: 8CR9

Cryo-EM structure of PcrV/Fab(30-B8)

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody 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)
C	Polyketide_cyc2	e8cr9C1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Polyketide_cyc2	ECOD (v295.2)
B	Polyketide_cyc2	e8cr9B1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Polyketide_cyc2	ECOD (v295.2)
A	Polyketide_cyc2	e8cr9A1	A: alpha arrays	X: RNase A-like	H: RNase A-like	T: RNase A-like	F: Polyketide_cyc2	ECOD (v295.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
B	Light Chain	IGKV1	Kappa	maltose/maltodextrin-binding periplasmic protein,type iiisecretion protein pcrv	SAbDab (2026-08-28)
A	Heavy Chain	IGHV3	-	maltose/maltodextrin-binding periplasmic protein,type iiisecretion protein pcrv	SAbDab (2026-08-28)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	Maltose/maltodextrin-binding periplasmic protein,Type III secretion protein PcrV	transporter activity carbohydrate transmembrane transporter activity transmembrane transporter activity oligosaccharide binding binding disaccharide binding carbohydrate binding maltose binding	establishment of protein localization transport secretion protein secretion by the type III secretion system establishment of protein localization to extracellular region export from cell protein secretion establishment of localization protein localization to extracellular region transmembrane transport localization secretion by cell protein transmembrane transport protein transport macromolecule localization establishment of protein localization transport secretion protein secretion by the type III secretion system establishment of protein localization to extracellular region export from cell protein secretion establishment of localization protein localization to extracellular region transmembrane transport localization secretion by cell protein transmembrane transport protein transport macromolecule localization cellular process intracellular protein localization cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cell chemotaxis chemotaxis response to external stimulus cellular response to chemical stimulus taxis response to chemical cell migration cell motility locomotion carbohydrate transport oligosaccharide transport disaccharide transport maltose transport polysaccharide localization dextrin transport maltodextrin transmembrane transport polysaccharide transport response to disaccharide response to oxygen-containing compound detection of maltose stimulus detection of stimulus response to carbohydrate detection of chemical stimulus detection of disaccharide stimulus response to maltose detection of carbohydrate stimulus	protein-containing complex type III protein secretion system complex ATPase dependent transmembrane transport complex plasma membrane protein complex membrane plasma membrane membrane protein complex transporter complex ATP-binding cassette (ABC) transporter complex cell periphery cellular anatomical structure transmembrane transporter complex ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing extracellular region protein-containing complex type III protein secretion system complex ATPase dependent transmembrane transport complex plasma membrane protein complex membrane plasma membrane membrane protein complex transporter complex ATP-binding cassette (ABC) transporter complex cell periphery cellular anatomical structure transmembrane transporter complex ATP-binding cassette (ABC) transporter complex, substrate-binding subunit-containing extracellular region periplasmic space outer membrane-bounded periplasmic space cell envelope
B	light chain	-	-	-
A	Heavy chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C	IPR036139	Virulence-associated V antigen superfamily	Homologous Superfamily
C	IPR005413	Low calcium response V antigen	Family
C	IPR006061	Solute-binding family 1, conserved site	Conserved Site
C	IPR006060	Maltose/Cyclodextrin ABC transporter, substrate-binding protein	Family
C	IPR006059	Bacterial-type extracellular solute-binding protein	Family

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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.

8CR9 | pdb_00008cr9

Cryo-EM structure of PcrV/Fab(30-B8)

External Resource: Annotation

Domain Annotation: ECOD Classification ECOD Database Homepage

SAbDab Antibody Annotation SAbDab Database Homepage

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage