Genetic control of the eighth component of complement

Donald Douglas Raum, M. A. Spence, D. Balavitch, S. Tideman, A. D. Merritt, R. T. Taggart, B. H. Petersen, N. K. Day, C. A. Alper

Research output: Contribution to journalArticle

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Abstract

Using isoelectric focusing in polyacrylamide gel and a hemolytic assay for development of patterns extensive structural polymorphism in human C8 has been delineated. Two alleles, C8(A) and C8(B), have been identified in orientals, with gene frequencies of 0.655 and 0.345. In blacks, what appears to be a third common allele was found, so that frequencies were 0.692, 0.259, and 0.049 for C8(A), C8(B), and C8(A1). In whites, C8(A1) was rare with a frequency of 0.003, and frequencies for C8(A) and C8(B) were 0.649 and 0.349. Inheritance was autosomal codominant in family studies and the distribution of types in random unrelated populations fit the Hardy-Weinberg equilibrium in all groups. C8 allotypes have been determined for two previously studied families, each with a homozygous C8-deficient propositus. This study suggests that C8 deficiency is a silent or null allele of the C8 structural locus, and that half normal levels of C8 cannot be used as a single criterion for the establishment of heterozygous C8 deficiency. C8 allotypes, as well as 18 other autosomal markers, were also determined for 24 families. The C8 structural locus is not closely linked to these markers, including the human histocompatibility loci complex.

Original languageEnglish (US)
Pages (from-to)858-865
Number of pages8
JournalJournal of Clinical Investigation
Volume64
Issue number3
StatePublished - 1979
Externally publishedYes

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Alleles
Isoelectric Focusing
Major Histocompatibility Complex
Gene Frequency
Population
polyacrylamide gels

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Raum, D. D., Spence, M. A., Balavitch, D., Tideman, S., Merritt, A. D., Taggart, R. T., ... Alper, C. A. (1979). Genetic control of the eighth component of complement. Journal of Clinical Investigation, 64(3), 858-865.

Genetic control of the eighth component of complement. / Raum, Donald Douglas; Spence, M. A.; Balavitch, D.; Tideman, S.; Merritt, A. D.; Taggart, R. T.; Petersen, B. H.; Day, N. K.; Alper, C. A.

In: Journal of Clinical Investigation, Vol. 64, No. 3, 1979, p. 858-865.

Research output: Contribution to journalArticle

Raum, DD, Spence, MA, Balavitch, D, Tideman, S, Merritt, AD, Taggart, RT, Petersen, BH, Day, NK & Alper, CA 1979, 'Genetic control of the eighth component of complement', Journal of Clinical Investigation, vol. 64, no. 3, pp. 858-865.
Raum DD, Spence MA, Balavitch D, Tideman S, Merritt AD, Taggart RT et al. Genetic control of the eighth component of complement. Journal of Clinical Investigation. 1979;64(3):858-865.
Raum, Donald Douglas ; Spence, M. A. ; Balavitch, D. ; Tideman, S. ; Merritt, A. D. ; Taggart, R. T. ; Petersen, B. H. ; Day, N. K. ; Alper, C. A. / Genetic control of the eighth component of complement. In: Journal of Clinical Investigation. 1979 ; Vol. 64, No. 3. pp. 858-865.
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AU - Petersen, B. H.

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