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CONTACT | |
External; near central cavity | |
HEMATOLOGY | |
Normal in heterozygotes and homozygotes | |
ELECTROPHORESIS | |
Hb X and Hb A separate at alkaline pH; Hb X moves like Hb J; Hb X moves like Hb F at acidic pH | |
CHROMATOGRAPHY | |
Hb X was isolated by DEAE-Sephadex chromatography | |
STRUCTURE STUDIES | |
Tryptic digestion; separation of the peptides by fingerprinting; amino acid analysis | |
DNA ANALYSES | |
Not reported; presumed mutation AAA->CAA at codon 132 | |
FUNCTION STUDIES | |
Normal | |
STABILITY | |
Normal | |
OCCURRENCE | |
Found in several Black families from the West Indies, Ghana, and the Ivory Coast | |
OTHER INFORMATION | |
Quantity in the heterozygote 28-40%; in the homozygous state 95.6%; found in combination with Hb S, Hb C, alpha-, and beta+-thal | |
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REFERENCES |
1. | |
Allan, N., Beale, D., Irvine, D., and Lehmann, H.: Nature, 208:658, 1965. | |
2. | |
Ringelhann, B., Konotey-Ahulu, F.I.D., Talapatra, N.C., Nkrumah, F.K., Wiltshire, B.G., and Lehmann, H.: Acta Haematol., 45:250, 1971. | |
3. | |
Cabannes, R., Renaud, R., Mauran, H., Pennors, H., Charlesworth, D., Price, B.G., and Lehmann, H.: Nouv. Rev. Fr. d'Hematol., 12:289, 1972. | |
4. | |
Cabannes, R., Amegnizin, P., Sangare, P., Arne, D., Casey, R., and Lehmann, H.: J. Med. Genet., 17:183, 1980. | |