Human CAAF1 gene--molecular cloning, gene structure, and chromosome mapping.
We have isolated and characterized a cDNA and the gene of the human homologue of CAAF1, a novel member of the S100 calcium-binding protein family. The 276-bp open reading frame encoded a 92-amino acid polypeptide with a predicted molecular mass of 10,575 Da. The deduced amino acid sequence of human CAAF1 showed 66% homology to bovine CAAF1. The human CAAF1 gene consisted of three exons, with the two EF hand motifs of the CAAF1 protein separately encoded by exons 2 and 3. This gene was expressed at a high level in polymorphonuclear leukocytes and at an intermediate level in esophageal mucosa. The tissue distribution of CAAF1 mRNA was different from that of other S100 proteins. Direct R-banding fluorescence in situ hybridization revealed that the human CAAF1 gene was mapped to chromosome 1q21.2-q22, where most of the S100 genes form a cluster.
Yamamura
T
T
Growth Factor Division, National Cancer Center Research Institute, Tokyo, Japan.
Hitomi
J
J
Nagasaki
K
K
Suzuki
M
M
Takahashi
E
E
Saito
S
S
Tsukada
T
T
Yamaguchi
K
K
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002135:Calcium-Binding Proteins / Q000235:genetics*; D002417:Cattle; D002874:Chromosome Mapping; D002878:Chromosomes, Human, Pair 1; D003001:Cloning, Molecular; D018076:DNA, Complementary; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D008969:Molecular Sequence Data; D009418:S100 Proteins; D000067616:S100A12 Protein; D017386:Sequence Homology, Amino Acid
D002135:Calcium-Binding Proteins; D018076:DNA, Complementary; D009418:S100 Proteins; D000067616:S100A12 Protein; C090441:S100A12 protein, human