function:Associates with the Ig-mu chain to form a molecular complex that is expressed on the surface of pre-B-cells. This complex presumably regulates ig gene rearrangements in the early steps of B-cell differentiation.,similarity:Belongs to the immunoglobulin superfamily.,subunit:Associates non-covalently with IGLL1.,tissue specificity:Only expressed by pre-B-cells.,
Endoplasmic reticulum .
Only expressed by pre-B-cells.
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