Gene Information
Gene NameP4HB
OrganismHomo sapiens (Human)
Gene Length508
Protein NamesProtein disulfide-isomerase (PDI) (EC 5.3.4.1) (Cellular thyroid hormone-binding protein) (Prolyl 4-hydroxylase subunit beta) (p55)
Target Nameprotein disulfide-isomerase
Target TypeNA
Gene Age886 ( ENSG00000185624 )
Evolutionary StageOpisthokonta
AlphaFoldDBP07237
Gene CardP4HB
Uniprot IDP07237
PfamPF00085
In ASDyes
Allosteric Predictionyes (0.35164423)
Ortholog in AnimalsAlpaca_ P4HB ( ortholog_one2one )
Dog_ P4HB ( ortholog_one2one )
GuineaPig_ P4HB ( ortholog_one2one )
Macaque_ P4HB ( ortholog_one2one )
Mouse_ P4hb ( ortholog_one2one )
Pig_ P4HB ( ortholog_one2one )
Rat_ P4hb ( ortholog_one2one )
OhnologsNA
ParalogsERP27, PDIA6, TMX1, TXNDC11, TMX4, TMX3, PDILT, ERP44, PDIA2, PDIA3, PDIA4, PDIA5, TXNDC5
Tissuepancreas
Tissue SpecificityNA
Pharmacological Animal ModelsNULL(Chimpanzee);NULL(Mouse);0.001212(Rat);NULL(Rabbit)
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 1BJX  (NMR  1MEK  (NMR  1X5C  (NMR  2BJX  (NMR  2K18  (NMR  3BJ5  (X-ray  2.20A  3UEM  (X-ray  2.29A  4EKZ  (X-ray  2.51A  4EL1  (X-ray  2.88A  4JU5  (X-ray  2.28A  6I7S  (X-ray  2.50A 
DBSNP rs786204843 
Subcellular location [CC]Endoplasmic reticulum {ECO:0000269|PubMed:23475612, ECO:0000269|PubMed:32149426}. Endoplasmic reticulum lumen {ECO:0000269|PubMed:10636893, ECO:0000269|PubMed:23475612}. Melanosome {ECO:0000269|PubMed:12643545, ECO:0000269|PubMed:17081065}. Cell membrane {ECO:0000269|PubMed:21670307};
Peripheral membrane protein {ECO:0000305}. Note=Highly abundant. In some cell types, seems to be also secreted or associated with the plasma membrane, where it undergoes constant shedding and replacement from intracellular sources (Probable). Localizes near CD4-enriched regions on lymphoid cell surfaces (PubMed:11181151). Identified by mass spectrometry in melanosome fractions from stage I to stage IV (PubMed:10636893). Colocalizes with MTTP in the endoplasmic reticulum (PubMed:23475612). {ECO:0000269|PubMed:10636893, ECO:0000269|PubMed:11181151, ECO:0000269|PubMed:23475612, ECO:0000305}.
Mouse PG classificationNA
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