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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
Hb A2-Wrens or alpha 2 delta 2 98(FG5) Val----Met, an unstable delta chain variant identified by sequence analysis of amplified DNA.
Data are reported for an 85-year-old black make who had an HPFH condition on one chromosome and a suspected 'delta-thalassemia' on the other. Sequence analysis of amplified DNA of an appropriate segment of the delta-globin gene identified a GTG to ATG mutation for codon 98 and thus a Val----Met replacement in the delta chain. This abnormality was confirmed by hybridization of amplified DNA with 32P-labeled synthetic probes and by the amino-acid composition of the isolated tryptic peptide delta T-11. Thus, the 'delta-thalassemia' is caused by the presence of an Hb A2 variant that is considered to be unstable to a similar extent as is Hb Köln, its beta chain counterpart.[1]
