Respiratory function and nucleotide composition of erythrocytes from tropical elasmobranchs

Autor:	J.M. Ryder, John Baldwin, Rufus M. G. Wells
Rok vydání:	1992
Předmět:	chemistry.chemical_classification GTP' Ecology Allosteric regulation Oxygen transport chemistry.chemical_element General Medicine Biology Oxygen Red blood cell medicine.anatomical_structure Biochemistry chemistry medicine Respiratory function Nucleotide Hemoglobin
Zdroj:	Comparative Biochemistry and Physiology Part A: Physiology. 103:157-162
ISSN:	0300-9629
DOI:	10.1016/0300-9629(92)90256-p
Popis:	1. 1. Oxygen carrying capacity and parameters of erythrocyte-oxygen binding are similar for a range of elasmobranchs with markedly different swimming behaviour. 2. 2. Erythrocyte nucleotide components in sharks include the allosteric hemoglobin modifiers GTP and ATP in similar ratios, and the total pool appears independent of locomotory activity. A rhinobatoid ray had no detectable erythrocyte trinucleotides, but had an appreciable pool of AMP together with IMP. 3. 3. There was no evidence for either urea or NaCl modulation of hemoglobin function in erythrocytes from a carcharhinid shark. 4. 4. These observations lead to the conclusion that parameters of the oxygen transport system in elasmobranchs are highly conserved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::44f089c623dc07c4a9867be681388301 https://doi.org/10.1016/0300-9629(92)90256-p Zobrazit plný text záznamu