Hb Wayne | alpha139 (-A) in alpha2 or alpha1; modified C-terminal sequence: |
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(139)ASN-Thr-Val-Lys-Leu-Glu-Pro-(146)Arg-COOH |
HEMATOLOGY | Normal in the heterozygote | ||
ELECTROPHORESIS | Hb X appears as two bands (one band cathodic and the other anodic to Hb J-Baltimore) in electrophoresis at alkaline pH | ||
CHROMATOGRAPHY | Hb X elutes faster than Hb A from a cation exchange HPLC column; can also be isolated on DEAE-Sephadex or DEAE-Sephacel columns | ||
STRUCTURE STUDIES | Tryptic digestion of alphaX chain; separation of peptides by fingerprinting or reversed phase HPLC; amino acid analysis; sequencing; Edman degradation | ||
DNA ANALYSES | Not reported; variation must be the result of a frameshift | ||
FUNCTION STUDIES | Increased oxygen affinity; decreased cooperativity and Bohr effect | ||
STABILITY | Stable | ||
OCCURRENCE | Found in members of three Caucasian families in the USA | ||
OTHER INFORMATION | Quantity in the heterozygote 12-16% |
REFERENCES | |||
1. | Seid-Akhavan, M., Winter, W.P., Abramson, R.K., and Rucknagel, D.L.: Proc. Natl. Acad. Sci. USA, 73:82, 1976. | ||
2. | Huisman, T.H.J., Headlee, M.G., Wilson, J.B., Lam, H., Johnson, S.E.N., and Webber, B.B.: Hemoglobin, 8:1, 1984. |