Mzb1 - marginal zone B and B1 cell-specific protein 1

Involved in several processes, including integrin activation; positive regulation of immunoglobulin production; and regulation of B cell proliferation. Located in endoplasmic reticulum lumen and extracellular region. Part of endoplasmic reticulum chaperone complex. Is expressed in thymus primordium. Orthologous to human MZB1 (marginal zone B and B1 cell specific protein). [provided by Alliance of Genome Resources, Apr 2022]