The alpha chains of goat hemoglobins: old and new variants in native Apulian breeds. 2005

Elisa Pieragostini, and Rosario Rullo, and Andrea Scaloni, and Grazia Bramante, and Aldo Di Luccia
Department of Engineering and Management of the Agricultural, Livestock and Forest Systems, University of Bari, 70100 Bari, Italy. pierelis@agr.uniba.it

Blood samples were collected from 324 goats belonging to the native Apulian breeds Garganica and Jonica; 60 Alpine goats were also sampled to serve as a comparison. Hemoglobin phenotypes were analyzed with isoelectric focusing in a pH range of 6.7-7.7. Heterogeneity of globin chains was evidenced both by AUT-PAGE and RP-HPLC. The primary structure of four alpha globins was analyzed by combined mass spectrometry approaches. Two of these globins had never been sequenced before. One was a new alpha variant, an allele of the HBA1A gene from which it differed for the mutation A26T and has been registered with a low frequency only in Apulian breeds; the other was a globin encoded by the HBA2 locus, whose primary structure was previously derived from the corresponding gene. The two alleles recorded at the HBA2 locus presented a different frequency in the three breeds but may be considered to be generally rather common. Notwithstanding the sample size no goat was found to exhibit HbA1B. The authors discuss their findings in the light of the results reported by other researchers and argue that, in spite of what had been inferred in pioneer works on goat hemoglobins, HBA1B is not a common allele.

UI MeSH Term Description Entries
D007525 Isoelectric Focusing Electrophoresis in which a pH gradient is established in a gel medium and proteins migrate until they reach the site (or focus) at which the pH is equal to their isoelectric point. Electrofocusing,Focusing, Isoelectric
D002851 Chromatography, High Pressure Liquid Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed. Chromatography, High Performance Liquid,Chromatography, High Speed Liquid,Chromatography, Liquid, High Pressure,HPLC,High Performance Liquid Chromatography,High-Performance Liquid Chromatography,UPLC,Ultra Performance Liquid Chromatography,Chromatography, High-Performance Liquid,High-Performance Liquid Chromatographies,Liquid Chromatography, High-Performance
D003720 Densitometry The measurement of the density of a material by measuring the amount of light or radiation passing through (or absorbed by) the material. Densitometries
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
D005838 Genotype The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS. Genogroup,Genogroups,Genotypes
D006041 Goats Any of numerous agile, hollow-horned RUMINANTS of the genus Capra, in the family Bovidae, closely related to the SHEEP. Capra,Capras,Goat
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
D006863 Hydrogen-Ion Concentration The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
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

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