Publication: Identification of HBC [ß6(a3)GLU→LYS] in a thai Male
Issued Date
1993-01-01
Resource Type
ISSN
03630269
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2-s2.0-0027489376
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Mahidol University
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SCOPUS
Bibliographic Citation
Hemoglobin. Vol.17, No.5 (1993), 419-425
Suggested Citation
W. Sitiboon, C. Srisomsap, P. Winichagoon, S. Fucharoen, J. Svasti Identification of HBC [ß6(a3)GLU→LYS] in a thai Male. Hemoglobin. Vol.17, No.5 (1993), 419-425. doi:10.3109/03630269308997496 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/22551
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Title
Identification of HBC [ß6(a3)GLU→LYS] in a thai Male
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Abstract
The propositus was a 29-year-old Thai male, whose electrophoretic pattern showed Hb A (58% plus an abnormal hemoglobin (42% with mobility identical to Hb A2and Hb E. Protein sequencer analysis and tryptic peptide mapping of the ß chain indicated that the abnormal hemoglobin was Hb C [ß6(A3)Glu→Lys], rather than Hb E which is more commonly found in South East Asia. This conclusion was confirmed by direct sequence analysis of the propositus' DNA, which showed AAG as well as GAG at codon 6 of the ß gene, in agreement with heterozygosity for Hb C and Hb A. Furthermore, the ß gene framework (Ava II -, Bam HI + of the propositus suggested that the ßcgene may have arisen from an independent mutation. Since Hb C and Hb E have the same mutation (Glu→Lys) in the ß chain, although at different positions, and behave similarly in electrophoresis, cases of Hb C and Hb E may sometimes have been mistakenly identified for each other, based on whichever variant is most prevalent in the particular population. © 1993 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted.