Mouse Atp6f, the gene encoding the 23-kDa proteolipid of vacuolar proton translocating ATPase.
The 23-kDa proteolipid subunit of mouse vacuolar-type proton-translocating ATPase (V-ATPase) was predicted to be a hydrophobic polypeptide of 205 amino acid residues with five putative transmembrane segments. It exhibits sequence similarity to Vma16p of Saccharomyces cerevisiae and vha-4 of Caenorhabdittis elegans (83 and 84%, respectively). Southern blot analysis indicated that the proteolipid is encoded by a single gene, Atp6f, in the mouse genome. Atp6f was mapped to approximately 55 cM on chromosome 4, and its genomic organization is similar to that of the human gene: 8 exons separated by 7 introns, with boundaries matching the GT-AG rule. RNA blotting demonstrated that Atp6f is transcribed as 1.0- and 1.8-kb mRNAs in multiple tissues to varying degrees. The major transcription initiation sites are at -13 and -58 bp upstream of the translation initiation codon. The epitope-tagged 23-kDa protoelipid was localized in endomembrane organelles in CHO cells, as expected for a component of a vacuolar-type proton pump.
Sun-Wada
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GH
Division of Biological Sciences, Institute of Scientific and Industrial Research, Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan.
Murakami
H
H
Nakai
H
H
Wada
Y
Y
Futai
M
M
D017398:Alternative Splicing; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D016466:CHO Cells; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D006224:Cricetinae; D004247:DNA / Q000737:chemistry / Q000235:genetics; D018076:DNA, Complementary / Q000737:chemistry / Q000235:genetics; D005091:Exons; D015870:Gene Expression; D005796:Genes / Q000235:genetics; D007438:Introns; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D008815:Mice, Inbred Strains; D008969:Molecular Sequence Data; D021122:Protein Subunits; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid; D014018:Tissue Distribution; D024363:Transcription Initiation Site; D025262:Vacuolar Proton-Translocating ATPases / Q000235:genetics* / Q000378:metabolism
C506980:Atp6v0b protein, mouse; D018076:DNA, Complementary; D021122:Protein Subunits; D012333:RNA, Messenger; D004247:DNA; D025262:Vacuolar Proton-Translocating ATPases; C506979:ATP6V0B protein, human