NCIt definition : Lysosomal cobalamin transport escort protein LMBD1 (540 aa, 61 kDa) is encoded by
the human LMBRD1 gene. This protein plays a role in vitamin B12 transport from the
lysosome into the cytoplasm.;
NCIt note : Lysosomal cobalamin transport escort protein LMBD1 associates with lysosomal cobalamin
transport protein ABCD4, induces the translocation of ABCD4 from the endoplasmic reticulum
to the lysosome. This heterodimer binds to cyanocobalamin reductase / alkylcobalamin
dealkylase (MMACHC) in the lysosome. The trimeric complex mediates the transport of
cobalamin from the lysosome to the cytoplasm. (UniProt);