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FLASH GENE
Symbol PDIA2 contributors: mct - updated : 12-05-2016
HGNC name protein disulfide isomerase family A, member 2
HGNC id 14180
PROTEIN
PHYSICAL PROPERTIES
STRUCTURE
motifs/domains
  • two thioredoxin domains
  • three predicted N-linked glycosylation sites
  • HOMOLOGY
    Homologene
    FAMILY
  • thioredoxin family
  • protein disulfide isomerase family
  • CATEGORY enzyme
    SUBCELLULAR LOCALIZATION     intracellular
    intracellular,cytoplasm,organelle,membrane
    intracellular,cytoplasm,organelle,endoplasmic reticulum
    intracellular,cytoplasm,cytosolic
    text
  • PDIA2 and F3 co-localise in the front edge of motile coronary smooth muscle cells (HVSMC
  • basic FUNCTION
  • catalyzing protein folding and thiol-disulfide interchange reactions
  • catalyzing disulfide bond formation in the endoplasmic reticulum of eukaryotes
  • involved in DNA-nuclear matrix anchoring
  • may be playing a role with HSPA5 in insulin biosynthesis, although an excess of PDIA2 disrupts normal proinsulin processing (Zhang 2009)
  • involved in insulin disulfide bond formation and an excess of this protein impedes normal insulin folding and probably exit from the ER (Zhang 2009)
  • likely a dynamic equilibrium between ERO1- and glutathione disulphide-mediated oxidation of PDIA2 constitutes an important element of ER redox homeostasis
  • involvement for PDIA2 in antigen presentation in addition to its previously described roles in autoimmunity and Parkinson disease
  • cell surface PDIA2 expression and function regulate the capacity of natriuretic peptides to generate cGMP through interaction with their receptors
  • ER-stress protein that controls tissue factor (TF) -procoagulant activity
  • CELLULAR PROCESS
    PHYSIOLOGICAL PROCESS
    PATHWAY
    metabolism
    signaling
    a component
    INTERACTION
    DNA
    RNA
    small molecule
    protein
  • interactions with LMAN1 and TXNDC4 provide a novel, dynamic control of SUMF1 trafficking and enzymatic activity
  • pH-dependent oxidation of PDIA2 by ERO1A
  • PDIA2 exhibits unfoldase activity for proinsulin, increasing retention of proinsulin within the ER of pancreatic beta-cells
  • RTN1 induces PDIA2 redistribution in ER vesicles, and concomitantly modulates its activity by decreasing the levels of its S-nitrosylated form
  • PDIA2 binds preferentially ERO1A, whereas ERP44 equally retains ERO1A and PRDX4
  • ERO1A oxidizes PDIA2 to introduce disulfides into substrates, and PDIA2 can feedback-regulate ERO1A activity
  • ER-stress protein-disulphide isomerase family A member 2 (PDIA2) regulates tissue factor (F3), and F3 is chaperoned by PDIA2 to the coronary smooth muscle cells (HVSMC) membrane and to the cell migratory front
  • cell & other
    REGULATION
    Other cytosolic form was clearly digested by caspase-3 and -7 (substrate of caspase-3 and -7, that has an anti-apoptotic action (Na 2007)
    ASSOCIATED DISORDERS
    ANIMAL & CELL MODELS