Human rasGTPase-activating protein (human counterpart of GAP1m): sequence of the cDNA, primary structure of the protein, production and chromosomal localization.
When cDNA encoding rat rasGTPase-activating protein (rat GAP1m) was used as a probe, two partial cDNA clones of a human counterpart of rat GAP1m were isolated from a cDNA library derived from growth-arrested normal human ectocervical epithelial cells. One clone was found to be a cDNA of premature mRNA with two introns. A complete cDNA of human GAP1m was constructed by a series of reverse transcription-polymerase chain reaction (RT-PCR) using total RNA from human epidermoid carcinoma A431 cells. Human GAP1m shows 87.7% nucleotide identity to rat GAP1m in open reading frame and encodes an 850-amino acid protein that shows 89.2% identity to rat GAP1m. A 100-kDa protein was detected in A431 cells by Western blotting with anti-rat GAP1m antibody. The human GAP1m gene was mapped to chromosome 3q24-q26.
Mitsubishi Kasei Institute of Life Sciences, Tokyo, Japan.
M
M
Kobayashi
T
T
Masui
J
J
Kusuda
Y
Y
Kameoka
K
K
Hashimoto
S
S
Iwashita
D000818:Animals; D001483:Base Sequence; D002478:Cells, Cultured; D002874:Chromosome Mapping; D002893:Chromosomes, Human, Pair 3; D018076:DNA, Complementary / Q000235:genetics*; D020690:GTPase-Activating Proteins; D006801:Humans; D007438:Introns / Q000235:genetics; D008969:Molecular Sequence Data; D014176:Protein Biosynthesis; D011506:Proteins / Q000737:chemistry / Q000235:genetics*; D051381:Rats; D020703:ras GTPase-Activating Proteins
D018076:DNA, Complementary; D020690:GTPase-Activating Proteins; D011506:Proteins; C102193:RASA2 protein, human; D020703:ras GTPase-Activating Proteins