title: A cyclophilin-related protein involved in the function of natural killer cells.
abstract: Natural killer cells are non-major histocompatibility complex-restricted large granular lymphocytes that can recognize and destroy tumor cells without prior stimulation. A 150-kDa molecule on the surface of human natural killer cells was identified as a component of a putative tumor-recognition complex. We report here the isolation of cDNAs coding for the 150-kDa tumor-recognition molecule from human and mouse cDNA libraries. The amino terminus of the predicted protein contains a large hydrophobic region followed by a domain that is highly homologous to cyclophilin/peptidylprolyl cis-trans isomerase. The remainder of the protein is extremely hydrophilic and contains three homologous positively charged clusters. There are also three regions that contain extensive arginine- and serine-rich repeats. Comparison of the human and mouse predicted amino acid sequences revealed > 80% homology.
authors.affiliation: Division of Molecular Immunology and Neurobiology, Mount Sinai Hospital Research Institute, Toronto, Ontario, Canada.
authors.forename: S K
authors.initials: SK
authors.lastname: Anderson
authors.forename: S
authors.initials: S
authors.lastname: Gallinger
authors.forename: J
authors.initials: J
authors.lastname: Roder
authors.forename: J
authors.initials: J
authors.lastname: Frey
authors.forename: H A
authors.initials: HA
authors.lastname: Young
authors.forename: J R
authors.initials: JR
authors.lastname: Ortaldo
mesh_terms: D000591:Amino Acid Isomerases / Q000235:genetics*; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D001798:Blood Proteins / Q000235:genetics*; D002352:Carrier Proteins / Q000235:genetics*; D003001:Cloning, Molecular; D021983:Cyclophilins; D004268:DNA-Binding Proteins / Q000235:genetics; D006801:Humans; D007694:Killer Cells, Natural / Q000502:physiology*; D051379:Mice; D008969:Molecular Sequence Data; D011487:Protein Conformation; D012333:RNA, Messenger / Q000096:biosynthesis; D016601:RNA-Binding Proteins / Q000235:genetics; D055607:Receptors, Natural Killer Cell; D012091:Repetitive Sequences, Nucleic Acid; D017386:Sequence Homology, Amino Acid; D012694:Serine
chemical_list: D001798:Blood Proteins; D002352:Carrier Proteins; D004268:DNA-Binding Proteins; D012333:RNA, Messenger; D016601:RNA-Binding Proteins; D055607:Receptors, Natural Killer Cell; D012694:Serine; D000591:Amino Acid Isomerases; D021983:Cyclophilins; C072070:cyclophilin-S1