Identification and localization of MEP1A-like sequences (MEP1AL1-4) in the human genome.
The human MEP1A gene encodes the meprin alpha subunit that consists of a protease domain conserved in the astacin family of metalloendopeptidases and several C-terminal interaction domains present in other proteins. Using the alpha subunit cDNA, we identified two clones from a human P1-derived artificial chromosome (PAC) library. Fluorescence in situ hybridization (FISH) mapped both PACs (1e12, 65a14) to chromosome 6p21, confirming the MEP1A location. FISH also mapped PAC 65a14 to chromosome 13cen, and to chromosome 9 in three different regions, 9p12-13, 9q21, and 9q22. Southern blot analysis showed that sequences of PAC 65a14 and MEP1A were similar in the 3' end but different in the 5' end, revealing for the first time that the human genome may encode multiple interaction domains highly similar to those of the meprin alpha subunit. The symbols of MEP1AL1, MEP1AL2, MEP1AL3, and MEP1AL4 have been designated for MEP1A-like sequences on 9p12-13, 9q21, 9q22, and 13cen, respectively.[1]References
- Identification and localization of MEP1A-like sequences (MEP1AL1-4) in the human genome. Jiang, W., Beatty, B.G. Biochem. Biophys. Res. Commun. (1999) [Pubmed]
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