Molecular cloning and characterization of OSR1 on human chromosome 2p24.
During Drosophila hindgut development, bowl, caudal/CDX, brachyenteron/Brachyury/TBX, fork head/FOX, drumstick, lines, and wingless/WNT play important roles. Drosophila bowl gene is homologous to Drosophila odd-skipped (odd) gene and odd-skipped related gene (sob). Here, human OSR1, related to Drosophila odd, was isolated using bioinformatics and cDNA-PCR. OSR1 was found to encode 266 amino-acid protein with three C2H2-type zinc fingers, a tyrosine phosphorylation site (Tyr 203), and several putative PXXP SH3 binding motifs. Three zinc fingers and a tyrosine phosphorylation site were conserved among human OSR1, OSR2, Drosophila odd, sob, and bowl. OSR1 showed 63.6% total amino-acid identity with OSR2. OSR1 gene consisting of three exons was located on human chromosome 2p24. OSR1 mRNA of 2.3-kb in size was detected in adult colon, small intestine, prostate, testis, and fetal lung. OSR1 mRNA was significantly up-regulated in a pancreatic cancer cell line MIA PaCa-2, and was weakly expressed in gastric cancer cell lines OKAJIMA, MKN45, pancreatic cancer cell lines PANC-1, BxPC-3, AsPC-1, PSN-1, Hs766T, and esophageal cancer cell line TE10. Among 10 cases of primary gastric cancer, OSR1 mRNA was up-regulated in 5 cases, and was down-regulated in 2 cases. This is the first report on molecular cloning and characterization of human OSR1.
Genetics and Cell Biology Section, Genetics Division, National Cancer Center Research Institute, Tsukiji 5-chome, Chuo-ku, Tokyo 104-0045, Japan. mkatoh@ncc.go.jp
Masaru
M
Katoh
D020816:Amino Acid Motifs; D000818:Animals; D002874:Chromosome Mapping; D002889:Chromosomes, Human, Pair 2 / Q000235:genetics*; D003001:Cloning, Molecular; D004268:DNA-Binding Proteins / Q000235:genetics; D004064:Digestive System / Q000378:metabolism; D004067:Digestive System Neoplasms / Q000378:metabolism / Q000473:pathology; D029721:Drosophila Proteins / Q000235:genetics; D004331:Drosophila melanogaster / Q000235:genetics; D005091:Exons / Q000235:genetics; D005796:Genes; D006801:Humans; D008168:Lung / Q000196:embryology / Q000378:metabolism; D008297:Male; D009363:Neoplasm Proteins / Q000096:biosynthesis / Q000235:genetics; D009928:Organ Specificity; D010766:Phosphorylation; D011467:Prostate / Q000378:metabolism; D011499:Protein Processing, Post-Translational; D017346:Protein Serine-Threonine Kinases / Q000096:biosynthesis / Q000235:genetics*; D012333:RNA, Messenger / Q000096:biosynthesis; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D013045:Species Specificity; D013737:Testis / Q000378:metabolism; D014157:Transcription Factors / Q000235:genetics; D014407:Tumor Cells, Cultured / Q000378:metabolism; D016335:Zinc Fingers / Q000235:genetics; D018909:src Homology Domains
D004268:DNA-Binding Proteins; D029721:Drosophila Proteins; D009363:Neoplasm Proteins; D012333:RNA, Messenger; C103175:Sob protein, Drosophila; D014157:Transcription Factors; C100532:bowl protein, Drosophila; C066735:odd protein, Drosophila; C118135:OXSR1 protein, human; D017346:Protein Serine-Threonine Kinases