title: High-altitude respiration of birds. The primary structures of the major and minor hemoglobin component of adult goshawk (Accipiter gentilis, Accipitrinae).
abstract: The primary structures of the hemoglobin components Hb A and Hb D of the adult Goshawk (Accipiter gentilis) are presented. The globin chains were separated on CM-Cellulose in 8M urea buffer. Component separation was achieved by FPLC-chromatography on a TSK SP-5PW column in phosphate-buffers with a linear gradient of NaCl. The amino-acid sequences were established by automated Edman degradation of the globin chains and of the tryptic peptides in liquid-phase and gas-phase sequenators. The sequences are aligned with those of European Black Vulture (Aegypius monachus). Phylogenetic aspects and physiological properties for Goshawk hemoglobin are inferred from sequence data. A detailed evaluation of the oxygen-binding properties has been carried out during a prolonged study of the noteworthy ability of Falconiformes to cope with extremely low oxygen partial pressures, and will be the subject of a forthcoming paper.
mesh_terms: D000531:Altitude; D000595:Amino Acid Sequence; D000818:Animals; D001717:Birds / Q000097:blood*; D002851:Chromatography, High Pressure Liquid; D004591:Electrophoresis, Polyacrylamide Gel; D006454:Hemoglobins / Q000032:analysis* / Q000302:isolation & purification; D010802:Phylogeny; D011487:Protein Conformation; D012119:Respiration
chemical_list: D006454:Hemoglobins