A new hemoglobin beta chain variant in sheep. 1977

M E John, and M John

A new hemoglobin beta chain variant referred to as Hb-E is observed in four Indian sheep breeds. Hemoglobin E is electrophoretically and chromatographically undistinguishable from hemoglobin B. However, polypeptide chain separation by urea-polyacrylamide disc gel electrophoresis and urea CM-cellulose chromatography reveals the new beta chain. The betaE chain has a slower anodic mobility than betaB chain at alkaline pH. The adult sheep hemoglobins could be classified into eight categories, namely AA, AB, AE, AC, ABC, BB, BE and EE, according to their sub-unit composition. The occurrence of betaE chain in homozygous condition or in combination with either one of the two allelic beta chains betaA or betaB, indicate that it may be an allelic variant. Gene frequencies of three hemoglobin beta chain alleles observed during the study are as follows: A = 0.192; B= 0.682; E = 0.126.

UI MeSH Term Description Entries
D002845 Chromatography Techniques used to separate mixtures of substances based on differences in the relative affinities of the substances for mobile and stationary phases. A mobile phase (fluid or gas) passes through a column containing a stationary phase of porous solid or liquid coated on a solid support. Usage is both analytical for small amounts and preparative for bulk amounts. Chromatographies
D004591 Electrophoresis, Polyacrylamide Gel Electrophoresis in which a polyacrylamide gel is used as the diffusion medium. Polyacrylamide Gel Electrophoresis,SDS-PAGE,Sodium Dodecyl Sulfate-PAGE,Gel Electrophoresis, Polyacrylamide,SDS PAGE,Sodium Dodecyl Sulfate PAGE,Sodium Dodecyl Sulfate-PAGEs
D004592 Electrophoresis, Starch Gel Electrophoresis in which a starch gel (a mixture of amylose and amylopectin) is used as the diffusion medium. Starch Gel Electrophoresis
D006446 Hemoglobin E An abnormal hemoglobin that results from the substitution of lysine for glutamic acid at position 26 of the beta chain. It is most frequently observed in southeast Asian populations.
D006454 Hemoglobins The oxygen-carrying proteins of ERYTHROCYTES. They are found in all vertebrates and some invertebrates. The number of globin subunits in the hemoglobin quaternary structure differs between species. Structures range from monomeric to a variety of multimeric arrangements. Eryhem,Ferrous Hemoglobin,Hemoglobin,Hemoglobin, Ferrous
D006455 Hemoglobins, Abnormal Hemoglobins characterized by structural alterations within the molecule. The alteration can be either absence, addition or substitution of one or more amino acids in the globin part of the molecule at selected positions in the polypeptide chains. Abnormal Hemoglobins
D000483 Alleles Variant forms of the same gene, occupying the same locus on homologous CHROMOSOMES, and governing the variants in production of the same gene product. Allelomorphs,Allele,Allelomorph
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012756 Sheep Any of the ruminant mammals with curved horns in the genus Ovis, family Bovidae. They possess lachrymal grooves and interdigital glands, which are absent in GOATS. Ovis,Sheep, Dall,Dall Sheep,Ovis dalli

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