title: Orosomucoid typing of apes (family Pongidae) by isoelectric focusing: among primates do only humans have two functional orosomucoid loci?
abstract: It has been demonstrated that human orosomucoid (ORM) is controlled by more than one functional loci, while Macaca ORM is controlled by one locus. To examine the time when the ORM gene was duplicated in the evolution of primates, plasma samples from 118 apes (family Pongidae) belonging to 4 genera and 12 species were investigated for ORM polymorphism using isoelectric focusing followed by immunoprinting. The band patterns of ORM in the subfamily Ponginae showed quantitatively different products as in humans. A pedigree study of common chimpanzees supported the two-locus model for ORM. Gibbons (subfamily Hylobatinae) displayed highly variable band patterns, but the number of loci was not determined unequivocally. Thus, this study shows that duplication of the ORM gene in primates occurred either before or after the divergence of Hylobatinae and Ponginae, consistent with a previous prediction from the molecular evolutionary rate of ORM.
authors.affiliation: Department of Legal Medicine, Tottori University School of Medicine, Yonago, Japan.
authors.forename: I
authors.initials: I
authors.lastname: Yuasa
authors.forename: K
authors.initials: K
authors.lastname: Umetsu
authors.forename: T
authors.initials: T
authors.lastname: Udono
authors.forename: S
authors.initials: S
authors.lastname: Sasaoka
authors.forename: R
authors.initials: R
authors.lastname: Suzuki
authors.forename: T
authors.initials: T
authors.lastname: Shotake
authors.forename: Y
authors.initials: Y
authors.lastname: Kawamoto
authors.forename: O
authors.initials: O
authors.lastname: Takenaka
authors.forename: K
authors.initials: K
authors.lastname: Nozawa
mesh_terms: D000483:Alleles; D000818:Animals; D001797:Blood Protein Electrophoresis; D005786:Gene Expression Regulation; D005787:Gene Frequency; D005796:Genes; D015186:Hominidae / Q000235:genetics* / Q000378:metabolism; D006801:Humans; D007525:Isoelectric Focusing; D005810:Multigene Family; D009961:Orosomucoid / Q000235:genetics* / Q000302:isolation & purification; D010641:Phenotype; D010802:Phylogeny; D011323:Primates / Q000235:genetics / Q000378:metabolism; D013045:Species Specificity
chemical_list: D009961:Orosomucoid