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Inherited human complement C5 deficiency. Nonsense mutations in exons 1 (Gln1 to Stop) and 36 (Arg1458 to Stop) and compound heterozygosity in three African-American families.

Publication ,  Journal Article
Wang, X; Fleischer, DT; Whitehead, WT; Haviland, DL; Rosenfeld, SI; Leddy, JP; Snyderman, R; Wetsel, RA
Published in: J Immunol
May 15, 1995

Hereditary C5 deficiency has been reported in several families of different ethnic backgrounds and from different geographic regions, but the molecular genetic defect causing C5 deficiency has not been delineated in any of them. To examine the molecular basis of C5 deficiency in the African-American population, the exons and intron/exon boundaries of the C5 structural genes from three C5-deficient (C5D) African-American families were sequenced, revealing two nonsense mutations. The nonsense mutations are located in exon 1 (C84AG to TAG) in two of the C5D families (Rhode Island and North Carolina) and in exon 36 (C4521GA to TGA) in the third C5D family (New York). The exon 1 and 36 mutations are contained in codons that encode the first amino acid of the C5 beta-chain (Gln1 to Stop) and residue 1458 in the alpha-chain (Arg1458 to Stop), respectively. Allele-specific PCR and sequence analyses demonstrated that the exon 1 mutation is present in only one of the C5 null genes in both the Rhode Island and North Carolina families, and the exon 36 mutation is contained in only one C5 null gene in the New York family. Neither of the nonsense mutations was found in the European or Caucasian-American C5D individuals examined. Collectively, these data indicate that: 1) C5 deficiency is caused by several different molecular genetic defects, 2) C5 deficiency in the African-American population can be explained in part by two distinct nonsense mutations in exons 1 and 36, and 3) compound heterozygosity exists in all of the reported African-American C5D families.

Duke Scholars

Published In

J Immunol

ISSN

0022-1767

Publication Date

May 15, 1995

Volume

154

Issue

10

Start / End Page

5464 / 5471

Location

United States

Related Subject Headings

  • Polymerase Chain Reaction
  • Pedigree
  • Mutation
  • Molecular Sequence Data
  • Immunology
  • Immunologic Deficiency Syndromes
  • Humans
  • Exons
  • Complement C5
  • Black People
 

Citation

APA
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MLA
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Wang, X., Fleischer, D. T., Whitehead, W. T., Haviland, D. L., Rosenfeld, S. I., Leddy, J. P., … Wetsel, R. A. (1995). Inherited human complement C5 deficiency. Nonsense mutations in exons 1 (Gln1 to Stop) and 36 (Arg1458 to Stop) and compound heterozygosity in three African-American families. J Immunol, 154(10), 5464–5471.
Wang, X., D. T. Fleischer, W. T. Whitehead, D. L. Haviland, S. I. Rosenfeld, J. P. Leddy, R. Snyderman, and R. A. Wetsel. “Inherited human complement C5 deficiency. Nonsense mutations in exons 1 (Gln1 to Stop) and 36 (Arg1458 to Stop) and compound heterozygosity in three African-American families.J Immunol 154, no. 10 (May 15, 1995): 5464–71.
Wang X, Fleischer DT, Whitehead WT, Haviland DL, Rosenfeld SI, Leddy JP, et al. Inherited human complement C5 deficiency. Nonsense mutations in exons 1 (Gln1 to Stop) and 36 (Arg1458 to Stop) and compound heterozygosity in three African-American families. J Immunol. 1995 May 15;154(10):5464–71.
Wang X, Fleischer DT, Whitehead WT, Haviland DL, Rosenfeld SI, Leddy JP, Snyderman R, Wetsel RA. Inherited human complement C5 deficiency. Nonsense mutations in exons 1 (Gln1 to Stop) and 36 (Arg1458 to Stop) and compound heterozygosity in three African-American families. J Immunol. 1995 May 15;154(10):5464–5471.

Published In

J Immunol

ISSN

0022-1767

Publication Date

May 15, 1995

Volume

154

Issue

10

Start / End Page

5464 / 5471

Location

United States

Related Subject Headings

  • Polymerase Chain Reaction
  • Pedigree
  • Mutation
  • Molecular Sequence Data
  • Immunology
  • Immunologic Deficiency Syndromes
  • Humans
  • Exons
  • Complement C5
  • Black People