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Expression profile of mouse BWF1, a protein with a BEACH domain, WD40 domain and FYVE domain

, : Expression profile of mouse BWF1, a protein with a BEACH domain, WD40 domain and FYVE domain. Cell Structure and Function 29(2): 35-42

We isolated a mouse cDNA encoding a protein that contains a BEACH domain, 5 WD40 repeats and a FYVE domain, which we designated as BWF1. The mRNA is approximately 10 kb in size and encodes a protein consisting of 3508 amino acids with a predicted molecular weight of 385 kDa. BWF1 has 45% homology with the Drosophila protein, blue cheese (BCHS). The BWF1 gene consists of 67 exons, which span 270 kb of genomic sequence, and has been mapped to mouse chromosome 5. Northern blot analysis revealed that it was strongly expressed in the liver, moderately in the kidney and testis, and weakly in the brain of adult mice. During the development of the mouse brain, BWF1 mRNA was abundant on embryonic day (E) 14-16; after birth, the level of BWF1 mRNA expression decreased markedly to reach the adult level at postnatal day 3. In situ hybridization analysis revealed that the expressed BWF1 mRNA was restricted to the marginal region both in E14 and E16 embryonic brain, but became diffuse after birth. Confocal microscopy studies of the epitope-tagged BWF1 protein showed that the protein was a cytoplasmic one.


PMID: 15342963

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