Amino acid compositions and N-terminal amino acid of all the tryptic peptides from the and polypeptide chains of adult hemoglobin of the Japanese monkey (Macaca fuscata fuscata). Biochemical studies on hemoglobins and myoglobins. IX

Hemoglobin Izu (Macaca): beta83 (EF 7) Gly leads to Cys. A new hemoglobin variant found in the Japanese monkey (Macaca fuscata)

Recently, Ishimoto, Kuwata and Shotake reported a polymerizing hemoglobin found in Japanese monkey (Macaca fuscata) (J. Anthropol. Soc. Nippon 83, 233-243 (1975)). They separated the variant hemoglobin by gel filtration and from finger print results and from the fact that beta-mercaptoethanol dissociates the polymer deduced the substitution of an amino acid(s) by cysteine in the betaT10 peptide. We have purified the variant hemoglobin by ion-exchange chromatography using carboxymethyl cellulose after the protection of the reactive thiol groups with cystamine, and purified the betaT10 peptide and demonstrated that the usual glycine at beta 83 (EF 7) is substituted in the variant hemoglobin by cysteine.

Two-nucleotide codon change in a hemoglobin polymorphism of the Celebes black ape (Macaca nigra)

A hemoglobin polymorphism involving variant beta-chains was demonstrated in the Celebes black ape, Macaca nigra. Fingerprinting and amino acid analysis of the tryptic peptides from the two chain types have shown that they differ by a single amino acid substitution, between lysine and aspartic acid, which requires a two-nucleotide change in the corresponding codon. Another substitution in the same codon is found as a species between the black ape and that of other macaques.