title: C1R subcomponent polymorphism in Japanese: description of a new allele.
abstract: The polymorphism of C1R was investigated in 570 unrelated Japanese individuals using isoelectric focusing and immunoblotting. A total of 11 different C1R phenotypes including a new pattern designated C1R 11-1 were observed. The allele frequencies were C1R*1 = 0.4561, C1R*2 = 0.3377, C1R*5 = 0.1956, C1R*8 = 0.0088 and C1R*R (C1R*9 and C1R*11) = 0.0018. The population data fitted the Hardy-Weinberg equilibrium. The C1R polymorphism in Japanese was shown to be controlled by 3 common alleles, C1R*1, C1R*2 and C1R*5, as compared to Caucasians where only the former 2 are present commonly. This complement system can be a useful genetic marker for anthropological studies.
authors.affiliation: Department of Legal Medicine, Yamanashi Medical University, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Kido
authors.forename: N
authors.initials: N
authors.lastname: Komatsu
authors.forename: Y
authors.initials: Y
authors.lastname: Kimura
authors.forename: M
authors.initials: M
authors.lastname: Oya
mesh_terms: D000483:Alleles; D000818:Animals; D015923:Complement C1r / Q000235:genetics* / Q000302:isolation & purification; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D014644:Genetic Variation / Q000235:genetics*; D006801:Humans; D015151:Immunoblotting; D007525:Isoelectric Focusing; D007564:Japan; D008297:Male; D010375:Pedigree; D010641:Phenotype; D011110:Polymorphism, Genetic / Q000235:genetics*; D044469:Racial Groups
chemical_list: D015923:Complement C1r