A growth factor-inducible nuclear protein with a novel cysteine/histidine repetitive sequence.
Growth factors rapidly induce transcription of a set of genes that encode regulatory proteins, many of which have been identified by cDNA cloning. Here we report the analysis of a cDNA corresponding to a gene induced in mouse 3T3 cells by growth factors and a variety of other extracellular signaling agents. The cDNA encodes a proline-, serine-, and glycine-rich nuclear protein designated Nup475 of 319 amino acids that contains two tandemly repeated cysteine- and histidine-containing sequences (CX8CX5CX3H) suggestive of a novel heavy metal-binding domain. Nup475 produced in Escherichia coli binds zinc. Its mRNA is present in a number of mouse tissues and cell lines, being especially abundant in intestine, thymus, and regenerating liver and in a macrophage cell line stimulated by gamma-interferon. We hypothesize that Nup475 is a regulatory protein with a novel zinc finger structure.
Howard Hughes Medical Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205.
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DuBois
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McLane
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Ryder
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Lau
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Nathans
D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D015139:Blotting, Southern; D002460:Cell Line; D003001:Cloning, Molecular; D005576:Colforsin / Q000494:pharmacology*; D004926:Escherichia coli / Q000235:genetics; D005455:Fluorescent Antibody Technique; D008099:Liver / Q000378:metabolism*; D008115:Liver Regeneration; D051379:Mice; D008807:Mice, Inbred BALB C; D008969:Molecular Sequence Data; D009687:Nuclear Proteins / Q000096:biosynthesis / Q000235:genetics* / Q000378:metabolism; D012313:RNA / Q000235:genetics / Q000302:isolation & purification; D012333:RNA, Messenger / Q000187:drug effects / Q000235:genetics*; D012091:Repetitive Sequences, Nucleic Acid; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology*; D014162:Transfection; D015032:Zinc / Q000378:metabolism; D016335:Zinc Fingers / Q000235:genetics
D009687:Nuclear Proteins; D012333:RNA, Messenger; D005576:Colforsin; D012313:RNA; D015032:Zinc; D013755:Tetradecanoylphorbol Acetate