Interaction of hemoglobin with chloride and 2,3-bisphosphoglycerate. A comparative approach
The equilibrium oxygen-binding properties of hemoglobins from reindeer (Rangifer tarandus tarandus), musk ox (Ovibos muschatos) and a bat (Rousettus aegyptiacus) have been investigated with special reference to the effect of heterotrophic ligands such as chloride and 2,3-bisphosphoglycerate [Gri(2,3...
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ftunivromatorver:oai:art.torvergata.it:2108/54792 2023-08-20T04:08:00+02:00 Interaction of hemoglobin with chloride and 2,3-bisphosphoglycerate. A comparative approach Giardina, B Brix, O Colosimo, A Petruzzelli, R CERRONI, LOREDANA CONDO', SAVERIO GIOVANNI Giardina, B Brix, O Colosimo, A Petruzzelli, R Cerroni, L Condo', Sg 1990-11-26 http://hdl.handle.net/2108/54792 eng eng volume:194 issue:1 firstpage:61 lastpage:65 journal:EUROPEAN JOURNAL OF BIOCHEMISTRY http://hdl.handle.net/2108/54792 Oxygen Animal Chiroptera Oxyhemoglobin Molecular Sequence Data Diphosphoglyceric Acid Chloride Artiodactyla Amino Acid Sequence Allosteric Regulation Settore BIO/10 - BIOCHIMICA info:eu-repo/semantics/article 1990 ftunivromatorver 2023-08-01T23:09:57Z The equilibrium oxygen-binding properties of hemoglobins from reindeer (Rangifer tarandus tarandus), musk ox (Ovibos muschatos) and a bat (Rousettus aegyptiacus) have been investigated with special reference to the effect of heterotrophic ligands such as chloride and 2,3-bisphosphoglycerate [Gri(2,3)P2]. The results obtained with hemoglobins from reindeer and musk ox indicate that their low oxygen affinity and their insensitivity to Gri(2,3)P2 are not only an intrinsic property of the molecule, as proposed in the case of ruminant hemoglobins, but also the results of the interplay between chloride and Gri(2,3)P2 interactions. In other words, insensitivity of reindeer and musk ox hemoglobins to Gri(2,3)P2 is mainly due to a decreased affinity constant for this cofactor and to an increased affinity constant for chloride anions; this renders more effective the competition of chloride for th anion-binding site. On the other hand bat hemoglobin behaves in a completely different way and could be regarded as a type case of low-affinity hemoglobin since its functional properties are modulated neither by chloride nor by Gri(2,3)P2. The results are discussed in the light of the amino acid residues which are known to be involved in the binding of organic phosphates. Article in Journal/Newspaper musk ox Rangifer tarandus Universitá degli Studi di Roma "Tor Vergata": ART - Archivio Istituzionale della Ricerca |
institution |
Open Polar |
collection |
Universitá degli Studi di Roma "Tor Vergata": ART - Archivio Istituzionale della Ricerca |
op_collection_id |
ftunivromatorver |
language |
English |
topic |
Oxygen Animal Chiroptera Oxyhemoglobin Molecular Sequence Data Diphosphoglyceric Acid Chloride Artiodactyla Amino Acid Sequence Allosteric Regulation Settore BIO/10 - BIOCHIMICA |
spellingShingle |
Oxygen Animal Chiroptera Oxyhemoglobin Molecular Sequence Data Diphosphoglyceric Acid Chloride Artiodactyla Amino Acid Sequence Allosteric Regulation Settore BIO/10 - BIOCHIMICA Giardina, B Brix, O Colosimo, A Petruzzelli, R CERRONI, LOREDANA CONDO', SAVERIO GIOVANNI Interaction of hemoglobin with chloride and 2,3-bisphosphoglycerate. A comparative approach |
topic_facet |
Oxygen Animal Chiroptera Oxyhemoglobin Molecular Sequence Data Diphosphoglyceric Acid Chloride Artiodactyla Amino Acid Sequence Allosteric Regulation Settore BIO/10 - BIOCHIMICA |
description |
The equilibrium oxygen-binding properties of hemoglobins from reindeer (Rangifer tarandus tarandus), musk ox (Ovibos muschatos) and a bat (Rousettus aegyptiacus) have been investigated with special reference to the effect of heterotrophic ligands such as chloride and 2,3-bisphosphoglycerate [Gri(2,3)P2]. The results obtained with hemoglobins from reindeer and musk ox indicate that their low oxygen affinity and their insensitivity to Gri(2,3)P2 are not only an intrinsic property of the molecule, as proposed in the case of ruminant hemoglobins, but also the results of the interplay between chloride and Gri(2,3)P2 interactions. In other words, insensitivity of reindeer and musk ox hemoglobins to Gri(2,3)P2 is mainly due to a decreased affinity constant for this cofactor and to an increased affinity constant for chloride anions; this renders more effective the competition of chloride for th anion-binding site. On the other hand bat hemoglobin behaves in a completely different way and could be regarded as a type case of low-affinity hemoglobin since its functional properties are modulated neither by chloride nor by Gri(2,3)P2. The results are discussed in the light of the amino acid residues which are known to be involved in the binding of organic phosphates. |
author2 |
Giardina, B Brix, O Colosimo, A Petruzzelli, R Cerroni, L Condo', Sg |
format |
Article in Journal/Newspaper |
author |
Giardina, B Brix, O Colosimo, A Petruzzelli, R CERRONI, LOREDANA CONDO', SAVERIO GIOVANNI |
author_facet |
Giardina, B Brix, O Colosimo, A Petruzzelli, R CERRONI, LOREDANA CONDO', SAVERIO GIOVANNI |
author_sort |
Giardina, B |
title |
Interaction of hemoglobin with chloride and 2,3-bisphosphoglycerate. A comparative approach |
title_short |
Interaction of hemoglobin with chloride and 2,3-bisphosphoglycerate. A comparative approach |
title_full |
Interaction of hemoglobin with chloride and 2,3-bisphosphoglycerate. A comparative approach |
title_fullStr |
Interaction of hemoglobin with chloride and 2,3-bisphosphoglycerate. A comparative approach |
title_full_unstemmed |
Interaction of hemoglobin with chloride and 2,3-bisphosphoglycerate. A comparative approach |
title_sort |
interaction of hemoglobin with chloride and 2,3-bisphosphoglycerate. a comparative approach |
publishDate |
1990 |
url |
http://hdl.handle.net/2108/54792 |
genre |
musk ox Rangifer tarandus |
genre_facet |
musk ox Rangifer tarandus |
op_relation |
volume:194 issue:1 firstpage:61 lastpage:65 journal:EUROPEAN JOURNAL OF BIOCHEMISTRY http://hdl.handle.net/2108/54792 |
_version_ |
1774720016939220992 |