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ERO1LB ERO1LB PDIA6 PDIA6 ERO1L ERO1L P4HA3 P4HA3 P4HB P4HB UBC UBC GANAB GANAB COL1A1 COL1A1 CALR CALR HSP90B1 HSP90B1 PRKCSH PRKCSH
"P4HB" - prolyl 4-hydroxylase, beta polypeptide in Homo sapiens
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splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
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protein of unknown 3D structure
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some 3D structure is known or predicted
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second shell of interactors
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Predicted Interactions
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protein homology
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P4HBprolyl 4-hydroxylase, beta polypeptide; 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 [...] (508 aa)    
Predicted Functional Partners:
ERO1L
ERO1-like (S. cerevisiae); Essential oxidoreductase that oxidizes proteins in the endoplasmic reticulum to produce disulfide bonds. Acts by oxidizing directly P4HB/PDI isomerase through a direct disulfide exchange. Does not act as a direct oxidant of folding substrate, but relies on P4HB/PDI to transfer oxidizing equivalent. Associates with ERP44 but not with GRP54, demonstrating that it does not oxidize all PDI related proteins and can discriminate between PDI and related proteins. Its reoxidation probably involves electron transfer to molecular oxygen via FAD. Acts independently of g [...] (468 aa)
        score_image score_image score_image   0.999
HSP90B1
heat shock protein 90kDa beta (Grp94), member 1; Molecular chaperone that functions in the processing and transport of secreted proteins. When associated with CNPY3, required for proper folding of Toll-like receptors (By similarity). Functions in endoplasmic reticulum associated degradation (ERAD). Has ATPase activity (803 aa)
      score_image score_image   score_image   0.996
ERO1LB
ERO1-like beta (S. cerevisiae); Essential oxidoreductase that oxidizes proteins in the endoplasmic reticulum to produce disulfide bonds. Acts by oxidizing directly P4HB/PDI isomerase through a direct disulfide exchange. Does not act as a direct oxidant of folding substrate, but relies on P4HB/PDI to transfer oxidizing equivalent. Associates with ERP44 but not with GRP54, demonstrating that it does not oxidize all PDI related proteins and can discriminate between PDI and related proteins. Its reoxidation probably involves electron transfer to molecular oxygen via FAD. Acts independently [...] (467 aa)
        score_image score_image score_image   0.994
CALR
calreticulin; Calcium-binding chaperone that promotes folding, oligomeric assembly and quality control in the endoplasmic reticulum (ER) via the calreticulin/calnexin cycle. This lectin interacts transiently with almost all of the monoglucosylated glycoproteins that are synthesized in the ER. Interacts with the DNA-binding domain of NR3C1 and mediates its nuclear export. Involved in maternal gene expression regulation. May participate in oocyte maturation via the regulation of calcium homeostasis (By similarity) (417 aa)
      score_image score_image   score_image   0.993
PDIA6
protein disulfide isomerase family A, member 6; May function as a chaperone that inhibits aggregation of misfolded proteins. Plays a role in platelet aggregation and activation by agonists such as convulxin, collagen and thrombin (440 aa)
      score_image score_image   score_image score_image 0.992
GANAB
glucosidase, alpha; neutral AB; Cleaves sequentially the 2 innermost alpha-1,3-linked glucose residues from the Glc(2)Man(9)GlcNAc(2) oligosaccharide precursor of immature glycoproteins (966 aa)
      score_image score_image   score_image   0.979
PRKCSH
protein kinase C substrate 80K-H; Regulatory subunit of glucosidase II (528 aa)
      score_image score_image   score_image   0.977
P4HA3
prolyl 4-hydroxylase, alpha polypeptide III; Catalyzes the post-translational formation of 4- hydroxyproline in -Xaa-Pro-Gly- sequences in collagens and other proteins (544 aa)
      score_image score_image   score_image   0.970
COL1A1
collagen, type I, alpha 1 (1464 aa)
        score_image score_image score_image   0.964
UBC
ubiquitin C (685 aa)
      score_image score_image   score_image   0.963
Your Current Organism:
Homo sapiens
NCBI taxonomy Id: 9606
Other names: H. sapiens, Homo, Homo sapiens, human, man
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