FEATURES

FAMILY

DESCRIPTION

Also known as MZB1_HUMAN, MZB1, MEDA7, PACAP. Associates with immunoglobulin M (IgM) heavy and light chains and promotes IgM assembly and secretion. May exert its effect by acting as a molecular chaperone or as an oxidoreductase as it displays a low level of oxidoreductase activity (By similarity). Isoform 2 may be involved in regulation of apoptosis. Helps to diversify peripheral B-cell functions by regulating Ca(2+) stores, antibody secretion and integrin activation., Acts as a hormone-regulated adipokine/pro-inflammatory cytokine that is implicated in causing chronic inflammation, affecting cellular expansion and blunting insulin response in adipocytes. May have a role in the onset of insulin resistance. Part of the ER chaperone complex, a multi-protein complex in the endoplasmic reticulum containing a large number of molecular chaperones which associates with unassembled incompletely folded immunoglobulin heavy chains (By similarity). Isoform 2 interacts with CASP2 and CASP9. Interacts with HSP90B1 and PDIA3 in a calcium-dependent manner (By similarity).

EXTERNAL LINKS

MZB1

Marginal zone B- and B1-cell-specific protein

MZB1

Molecular Synopsis