Figure 5. Expression of peak IV uMUP in wild-caught mice.

Urine from male and female wild mice, trapped from a number of different locations, was analysed by one-dimensional SDS/PAGE. Selected bands on the gels were subjected to in-gel digestion with endopeptidase LysC and MALDI–TOF-MS. ⋆, proteins in bands whose spectra matched with the uMUP, previously identified in peak IV; ○, bands whose mass spectra matched with uMUPs other than the peak IV protein (see text).