Annotations: 6HPV

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00031	Cystatin domain (Cystatin)	Cystatin domain	Very diverse family. Attempts to define separate sub-families failed. Typically, either the N-terminal or C-terminal end is very divergent. But splitting into two domains would make very short families. All members except Swiss:Q03196 and Swiss:Q1 ...	Very diverse family. Attempts to define separate sub-families failed. Typically, either the N-terminal or C-terminal end is very divergent. But splitting into two domains would make very short families. All members except Swiss:Q03196 and Swiss:Q10993 are found. Pfam:PF00666 are related to this family but have not been included.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Fetuin-B	enzyme regulator activity molecular function inhibitor activity peptidase regulator activity molecular function regulator activity enzyme inhibitor activity cysteine-type endopeptidase inhibitor activity peptidase inhibitor activity endopeptidase regulator activity endopeptidase inhibitor activity metalloendopeptidase inhibitor activity	negative regulation of hydrolase activity negative regulation of proteolysis regulation of catalytic activity negative regulation of biological process negative regulation of catalytic activity negative regulation of endopeptidase activity regulation of primary metabolic process negative regulation of peptidase activity organic substance metabolic process regulation of proteolysis proteolysis regulation of endopeptidase activity protein metabolic process negative regulation of protein metabolic process negative regulation of hydrolase activity negative regulation of proteolysis regulation of catalytic activity negative regulation of biological process negative regulation of catalytic activity negative regulation of endopeptidase activity regulation of primary metabolic process negative regulation of peptidase activity organic substance metabolic process regulation of proteolysis proteolysis regulation of endopeptidase activity protein metabolic process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process regulation of biological process organonitrogen compound metabolic process regulation of protein metabolic process negative regulation of metabolic process regulation of peptidase activity biological regulation negative regulation of molecular function primary metabolic process regulation of macromolecule metabolic process regulation of molecular function regulation of hydrolase activity metabolic process macromolecule metabolic process regulation of metabolic process sexual reproduction reproductive process fertilization single fertilization sperm-egg recognition cell-cell recognition binding of sperm to zona pellucida cell recognition cellular process	extracellular region cellular anatomical entity extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR025764	Fetuin-B-type cystatin domain	Domain
A	IPR000010	Cystatin domain	Domain
A	IPR046350	Cystatin superfamily	Homologous Superfamily
A	IPR001363	Proteinase inhibitor I25C, fetuin, conserved site	Conserved Site

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.