Characterisation of a new human and murine member of the DnaJ family of proteins.

Biochem Biophys Res Commun

Queensland Cancer Fund Research Unit, Joint Experimental Oncology Program, Queensland Institute of Medical Research, Herston, Australia.

Published: February 1998

We report the characterisation of a human gene, designated MCG18 (multiple endocrine neoplasia type 1 candidate gene 18), that encodes a new member of the DnaJ family of proteins. Database searches indicate that MCG18 also has the locus name HSPF2. MCG18 lies 250bp centromeric of the VRF/VEGFB gene on chromosome 11q13. The MCG18 cDNA is predicted to encode a 241 amino acid product that has partial homology to Escherichia coli dnaJ in that it contains the J domain. However, MCG18 has greatest similarity to a functionally undefined protein from Caenorhabditis elegans, both of which are predicted to have a membrane-spanning region adjacent to their J domains. The cDNA encoding the murine homolog (Mcg18) was also cloned and sequenced, and the encoded protein shares 81% similarity to MCG18. The coding region of MCG18 is interrupted by 4 introns and the mRNA is expressed as a 1.4kb message in all tissues examined, including those derived from the breast, ovary, bladder, lung and keratinocytes.

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http://dx.doi.org/10.1006/bbrc.1997.8091DOI Listing

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