Biological Activity: Thiol Protein Reductase Activity is 0.001 Δ650nm/ min-2, determined by measuring the turbidity increase at 650 nm due to insulin reduction. The activity is expressed as the ratio of the slope of a linear part of the turbidity curve to the lag time. Isome
Crystallography grade
P4HB
Spezies: Human
Wirt: Insektenzellen
Recombinant
>95 % as determined by SDS PAGE, Size Exclusion Chromatography and Western Blot.
SDS, WB, ELISA, Crys
DSI Protein, ERBA2L Protein, GIT Protein, P4Hbeta Protein, PDI Protein, PDIA1 Protein, PHDB Protein, PO4DB Protein, PO4HB Protein, PROHB Protein, PDA2 Protein, PDIP Protein, PDIR Protein, ERp59 Protein, Pdia1 Protein, Thbp Protein, p55 Protein, XPDIp Protein, pdi Protein, 1810041F13Rik Protein, AI661267 Protein, Pdip Protein, Pdipl Protein, p58 Protein, prolyl 4-hydroxylase subunit beta Protein, protein disulfide isomerase family A member 2 Protein, prolyl 4-hydroxylase, beta polypeptide Protein, protein disulfide isomerase family A member 2 L homeolog Protein, protein disulfide isomerase associated 2 Protein, prolyl 4-hydroxylase subunit beta L homeolog Protein, protein disulfide-isomerase Protein, P4HB Protein, PDIA2 Protein, P4hb Protein, pdia2.L Protein, Pdia2 Protein, p4hb.L Protein, LOC8281065 Protein
Hintergrund
Relevance: This multifunctional protein catalyzes the formation, breakage and rearrangement of disulfide bonds. At the cell surface, seems to act as a reductase that cleaves disulfide bonds of proteins attached to the cell. May therefore cause structural modifications of exofacial proteins. Inside the cell, seems to form/rearrange disulfide bonds of nascent proteins. At high concentrations, functions as a chaperone that inhibits aggregation of misfolded proteins. At low concentrations, facilitates aggregation (anti-chaperone activity). May be involved with other chaperones in the structural modification of the TG precursor in hormone biogenesis. Also acts a structural subunit of various enzymes such as prolyl 4-hydroxylase and microsomal triacylglycerol transfer protein MTTP. {ECO:0000269|PubMed:10636893, ECO:0000269|PubMed:12485997}. Synonyms: PDI, Cellular thyroid hormone-binding protein, Prolyl 4-hydroxylase subunit beta, p55,