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Comparative Study
. 1994 Oct;8(2):122-8.
doi: 10.1038/ng1094-122.

Isolation and characterization of mutations in the human holocarboxylase synthetase cDNA

Y Suzuki  1 , Y Aoki, Y Ishida, Y Chiba, A Iwamatsu, T Kishino, N Niikawa, Y Matsubara, K Narisawa
Affiliations
Comparative Study

Isolation and characterization of mutations in the human holocarboxylase synthetase cDNA

Y Suzuki et al. Nat Genet. 1994 Oct.

Abstract

Holocarboxylase synthetase (HCS) plays an essential role in biotin utilization in eukaryotic cells and its deficiency causes biotin-responsive multiple carboxylase deficiency in humans. We have cloned the human HCS cDNA and show that antiserum against the recombinant protein immunoprecipitates human HCS. A one base deletion resulting in a premature termination and a missense mutation (Leu to Pro) were found in cells from siblings with HCS deficiency. Human HCS shows homology to BirA, which acts as both a biotin-[acetyl-CoA-carboxylase] ligase and a biotin repressor in E. coli, suggesting a functional relationship between the two proteins. The human HCS gene maps to chromosome 21q22.1.

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