Human BST-1, a bone marrow stromal cell surface antigen, is a
glycosyl-phosphatidylinositol-anchored protein that facilitates the
growth of pre-B cells. We report here the molecular cloning of murine
BST-1 cDNA. The deduced amino acid sequence of murine BST-1 had 71%
similarity with human BST-1 and 30 and 25% similarity with CD38 and
Aplysia adenosine diphosphate-ribosyl cyclase, respectively. Murine
BST-1 mRNA was expressed in the bone marrow, spleen and thymus in
lymphoid organs, and the lung, kidney and heart in non-lymphoid
organs. Restriction fragment length polymorphism (RFLP) was shown in
BALB/c, DBA/2 and NZB vs C57BL/6, A/J, CBA/N, NZW, BXSB and MRL/lpr.
RFLP was mapped to the 5' portion of the murine BST-1 gene.
|
|