title: Hb Bibba or alpha 2 136(H19)Leu-->Pro beta 2 in a Caucasian family from Alabama.
abstract: Several members of a large Caucasian family who presented with a congenital Heinz body hemolytic anemia were found to be carriers of the unstable Hb Bibba or alpha 2 136(H19)Leu-->Pro beta 2. Identification by protein analysis was hampered by the instability of the variant which complicated its isolation from shipped blood samples. Moreover, the detection of the CTG-->CCG mutation at codon 136 of the alpha 2 gene required the substitution of dGTP by dITP during the DNA sequencing process to prevent the occurrence of secondary structures and compressions in the sequencing gel. The first Hb Bibba heterozygote, characterized in 1968 (1), is believed to be a member of this family. The clinical expression of the disease is surprisingly variable.
authors.affiliation: Department of Medicine, University of Alabama, Birmingham 35294, USA.
authors.forename: J T
authors.initials: JT
authors.lastname: Prchal
authors.forename: B
authors.initials: B
authors.lastname: Adler
authors.forename: J B
authors.initials: JB
authors.lastname: Wilson
authors.forename: E
authors.initials: E
authors.lastname: Baysal
authors.forename: W B
authors.initials: WB
authors.lastname: Qin
authors.forename: T P
authors.initials: TP
authors.lastname: Molchanova
authors.forename: D D
authors.initials: DD
authors.lastname: Pobedimskaya
authors.forename: E G
authors.initials: EG
authors.lastname: Kazanetz
authors.forename: T H
authors.initials: TH
authors.lastname: Huisman
mesh_terms: D000407:Alabama; D000595:Amino Acid Sequence; D000745:Anemia, Hemolytic, Congenital / Q000097:blood / Q000235:genetics*; D001483:Base Sequence; D004252:DNA Mutational Analysis; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D014644:Genetic Variation; D005914:Globins / Q000235:genetics; D006366:Heinz Bodies / Q000648:ultrastructure; D006455:Hemoglobins, Abnormal / Q000737:chemistry / Q000235:genetics*; D006579:Heterozygote; D006801:Humans; D008297:Male; D008969:Molecular Sequence Data; D010375:Pedigree; D017354:Point Mutation; D044465:White People / Q000235:genetics
chemical_list: D006455:Hemoglobins, Abnormal; D005914:Globins; C041119:hemoglobin Bibba