Definition of family of coronin-related proteins conserved between humans and mice: close genetic linkage between coronin-2 and CD45-associated protein.
Cell adhesion and signal transduction are coordinated processes that may be linked through regulatory elements such as actin-binding proteins. One such protein that may fulfill this role is coronin. In Dictyostelium discoideum, coronin is involved in cellular processes such as mitosis, cell motility, and phagocytosis. In addition, a human coronin, p57, has been described which interacts with the p47 component of phox proteins and may be involved in the formation of phagocytic vacuoles. Here, we describe a family of four mouse proteins which share 38% identity with Dictyostelium coronin and thus are designated coronin-1, -2, -3, and -4. The gene for coronin-2 is localized to mouse chromosome 19, 5' of the gene for CD45-associated protein. All the coronin proteins contain five highly conserved WD domains. However, their carboxyl regions are quite distinct. Three of the four proteins are ubiquitously expressed, whereas coronin-1, the mouse ortholog of p57, demonstrates expression restricted to hematopoietic cells. Comparison of expressed sequence tag cDNAs indicates that coronin-1, -2, -3, and -4 are highly conserved between mice and humans.
Howard Hughes Medical Institute, Department of Pathology, Washington University School of Medicine, St. Louis, MO 63110, USA.
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D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D003001:Cloning, Molecular; D017124:Conserved Sequence / Q000235:genetics*; D004023:Dictyostelium / Q000235:genetics; D005786:Gene Expression Regulation; D018507:Gene Expression Regulation, Developmental; D008040:Genetic Linkage; D006801:Humans; D047908:Intracellular Signaling Peptides and Proteins; D008565:Membrane Proteins; D051379:Mice; D008840:Microfilament Proteins / Q000235:genetics*; D008969:Molecular Sequence Data; D005810:Multigene Family / Q000235:genetics*; D009928:Organ Specificity; D010750:Phosphoproteins / Q000235:genetics*; D012333:RNA, Messenger / Q000032:analysis; D017386:Sequence Homology, Amino Acid
D047908:Intracellular Signaling Peptides and Proteins; D008565:Membrane Proteins; D008840:Microfilament Proteins; C090519:PTPRCAP protein, human; D010750:Phosphoproteins; C513303:Ptprcap protein, mouse; D012333:RNA, Messenger; C072061:coronin proteins