Fish hemoglobins
نویسندگان
چکیده
منابع مشابه
Antarctic fish hemoglobins: evidence for adaptive evolution at subzero temperature.
Notothenioids represent a large group of marine teleosts that are mostly endemic to the Antarctic Ocean. In this environment, the low metabolic demand and the high oxygen concentration reduce the need for hemoglobin(s) [Hb(s)]. The extreme condition is represented by the icefish (Channichthyidae, Notothenioidei), the only vertebrates that lack Hb. We obtained the nucleotide sequence coding for ...
متن کاملAllosteric effect of water in fish and human hemoglobins.
Prompted by the reported lack of solvation effects on the oxygen affinity of fish (trout I) hemoglobin that questioned allosteric water binding in human hemoglobin A (Bellelli, A., Brancaccio, A., and Brunori, M. (1993) J. Biol. Chem. 268, 4742-4744), we have investigated solvation effects in fish and human hemoglobins by means of the osmotic stress method and allosteric analysis. In contrast t...
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Hbs are ubiquitous proteins in most organisms, including bacteria, protozoans, fungi, plants, and animals (Vinogradov et al., 1993; Bolognesi et al., 1997). The known and predicted roles of Hbs in each organism encompass functions that include the reversible binding of gaseous ligands and the ability to bind other cellular molecules. Link to full text: http://www.plantphysiol.org/cgi/content/fu...
متن کاملWhole-Genome Duplication and the Functional Diversification of Teleost Fish Hemoglobins
Subsequent to the two rounds of whole-genome duplication that occurred in the common ancestor of vertebrates, a third genome duplication occurred in the stem lineage of teleost fishes. This teleost-specific genome duplication (TGD) is thought to have provided genetic raw materials for the physiological, morphological, and behavioral diversification of this highly speciose group. The extreme phy...
متن کاملPhylogeny of Echinoderm Hemoglobins
BACKGROUND Recent genomic information has revealed that neuroglobin and cytoglobin are the two principal lineages of vertebrate hemoglobins, with the latter encompassing the familiar myoglobin and α-globin/β-globin tetramer hemoglobin, and several minor groups. In contrast, very little is known about hemoglobins in echinoderms, a phylum of exclusively marine organisms closely related to vertebr...
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ژورنال
عنوان ژورنال: Brazilian Journal of Medical and Biological Research
سال: 2007
ISSN: 0100-879X
DOI: 10.1590/s0100-879x2007000600004