A monoclinic crystal form of a recombinant major urinary protein, (MUP) fro
m mouse, has been obtained. MUP is a member of the lipocalin family whose b
iological function relates to olfaction and sexual communication. Crystals
were grown by the vapour-diffusion technique against a mother liquor contai
ning CdCl2. Crystals belong to the monoclinic space group P2(1) with the ce
ll parameters a = 37.14, b = 55.79, c = 37.67 Angstrom, and beta = 93.24 de
grees. The crystals diffract to beyond 1.4 Angstrom resolution at a synchro
tron beamline.