The Greenland shark Somniosus microcephalus-Hemoglobins and ligand-binding properties.

A large amount of data is currently available on the adaptive mechanisms of polar bony fish hemoglobins, but structural information on those of cartilaginous species is scarce. This study presents the first characterisation of the hemoglobin system of one of the longest-living vertebrate species (39...
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Autor*in:	Roberta Russo [verfasserIn] Daniela Giordano [verfasserIn] Gianluca Paredi [verfasserIn] Francesco Marchesani [verfasserIn] Lisa Milazzo [verfasserIn] Giovanna Altomonte [verfasserIn] Pietro Del Canale [verfasserIn] Stefania Abbruzzetti [verfasserIn] Paolo Ascenzi [verfasserIn] Guido di Prisco [verfasserIn] Cristiano Viappiani [verfasserIn] Angela Fago [verfasserIn] Stefano Bruno [verfasserIn] Giulietta Smulevich [verfasserIn] Cinzia Verde [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2017

Übergeordnetes Werk:	In: PLoS ONE - Public Library of Science (PLoS), 2007, 12(2017), 10, p e0186181
Übergeordnetes Werk:	volume:12 ; year:2017 ; number:10, p e0186181

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.1371/journal.pone.0186181

Katalog-ID:	DOAJ017223873

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520			\|a A large amount of data is currently available on the adaptive mechanisms of polar bony fish hemoglobins, but structural information on those of cartilaginous species is scarce. This study presents the first characterisation of the hemoglobin system of one of the longest-living vertebrate species (392 ± 120 years), the Arctic shark Somniosus microcephalus. Three major hemoglobins are found in its red blood cells and are made of two copies of the same α globin combined with two copies of three very similar β subunits. The three hemoglobins show very similar oxygenation and carbonylation properties, which are unaffected by urea, a very important compound in marine elasmobranch physiology. They display identical electronic absorption and resonance Raman spectra, indicating that their heme-pocket structures are identical or highly similar. The quaternary transition equilibrium between the relaxed (R) and the tense (T) states is more dependent on physiological allosteric effectors than in human hemoglobin, as also demonstrated in polar teleost hemoglobins. Similar to other cartilaginous fishes, we found no evidence for functional differentiation among the three isoforms. The very similar ligand-binding properties suggest that regulatory control of O2 transport may be at the cellular level and that it may involve changes in the cellular concentrations of allosteric effectors and/or variations of other systemic factors. The hemoglobins of this polar shark have evolved adaptive decreases in O2 affinity in comparison to temperate sharks.
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912			\|a GBV_ILN_4325
912			\|a GBV_ILN_4335
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allfields	10.1371/journal.pone.0186181 doi (DE-627)DOAJ017223873 (DE-599)DOAJa91549d51c924dcc9307e1cfce37bd85 DE-627 ger DE-627 rakwb eng Roberta Russo verfasserin aut The Greenland shark Somniosus microcephalus-Hemoglobins and ligand-binding properties. 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A large amount of data is currently available on the adaptive mechanisms of polar bony fish hemoglobins, but structural information on those of cartilaginous species is scarce. This study presents the first characterisation of the hemoglobin system of one of the longest-living vertebrate species (392 ± 120 years), the Arctic shark Somniosus microcephalus. Three major hemoglobins are found in its red blood cells and are made of two copies of the same α globin combined with two copies of three very similar β subunits. The three hemoglobins show very similar oxygenation and carbonylation properties, which are unaffected by urea, a very important compound in marine elasmobranch physiology. They display identical electronic absorption and resonance Raman spectra, indicating that their heme-pocket structures are identical or highly similar. The quaternary transition equilibrium between the relaxed (R) and the tense (T) states is more dependent on physiological allosteric effectors than in human hemoglobin, as also demonstrated in polar teleost hemoglobins. Similar to other cartilaginous fishes, we found no evidence for functional differentiation among the three isoforms. The very similar ligand-binding properties suggest that regulatory control of O2 transport may be at the cellular level and that it may involve changes in the cellular concentrations of allosteric effectors and/or variations of other systemic factors. The hemoglobins of this polar shark have evolved adaptive decreases in O2 affinity in comparison to temperate sharks. Medicine R Science Q Daniela Giordano verfasserin aut Gianluca Paredi verfasserin aut Francesco Marchesani verfasserin aut Lisa Milazzo verfasserin aut Giovanna Altomonte verfasserin aut Pietro Del Canale verfasserin aut Stefania Abbruzzetti verfasserin aut Paolo Ascenzi verfasserin aut Guido di Prisco verfasserin aut Cristiano Viappiani verfasserin aut Angela Fago verfasserin aut Stefano Bruno verfasserin aut Giulietta Smulevich verfasserin aut Cinzia Verde verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 12(2017), 10, p e0186181 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:12 year:2017 number:10, p e0186181 https://doi.org/10.1371/journal.pone.0186181 kostenfrei https://doaj.org/article/a91549d51c924dcc9307e1cfce37bd85 kostenfrei http://europepmc.org/articles/PMC5638460?pdf=render kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2017 10, p e0186181
spelling	10.1371/journal.pone.0186181 doi (DE-627)DOAJ017223873 (DE-599)DOAJa91549d51c924dcc9307e1cfce37bd85 DE-627 ger DE-627 rakwb eng Roberta Russo verfasserin aut The Greenland shark Somniosus microcephalus-Hemoglobins and ligand-binding properties. 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A large amount of data is currently available on the adaptive mechanisms of polar bony fish hemoglobins, but structural information on those of cartilaginous species is scarce. This study presents the first characterisation of the hemoglobin system of one of the longest-living vertebrate species (392 ± 120 years), the Arctic shark Somniosus microcephalus. Three major hemoglobins are found in its red blood cells and are made of two copies of the same α globin combined with two copies of three very similar β subunits. The three hemoglobins show very similar oxygenation and carbonylation properties, which are unaffected by urea, a very important compound in marine elasmobranch physiology. They display identical electronic absorption and resonance Raman spectra, indicating that their heme-pocket structures are identical or highly similar. The quaternary transition equilibrium between the relaxed (R) and the tense (T) states is more dependent on physiological allosteric effectors than in human hemoglobin, as also demonstrated in polar teleost hemoglobins. Similar to other cartilaginous fishes, we found no evidence for functional differentiation among the three isoforms. The very similar ligand-binding properties suggest that regulatory control of O2 transport may be at the cellular level and that it may involve changes in the cellular concentrations of allosteric effectors and/or variations of other systemic factors. The hemoglobins of this polar shark have evolved adaptive decreases in O2 affinity in comparison to temperate sharks. Medicine R Science Q Daniela Giordano verfasserin aut Gianluca Paredi verfasserin aut Francesco Marchesani verfasserin aut Lisa Milazzo verfasserin aut Giovanna Altomonte verfasserin aut Pietro Del Canale verfasserin aut Stefania Abbruzzetti verfasserin aut Paolo Ascenzi verfasserin aut Guido di Prisco verfasserin aut Cristiano Viappiani verfasserin aut Angela Fago verfasserin aut Stefano Bruno verfasserin aut Giulietta Smulevich verfasserin aut Cinzia Verde verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 12(2017), 10, p e0186181 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:12 year:2017 number:10, p e0186181 https://doi.org/10.1371/journal.pone.0186181 kostenfrei https://doaj.org/article/a91549d51c924dcc9307e1cfce37bd85 kostenfrei http://europepmc.org/articles/PMC5638460?pdf=render kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2017 10, p e0186181
allfields_unstemmed	10.1371/journal.pone.0186181 doi (DE-627)DOAJ017223873 (DE-599)DOAJa91549d51c924dcc9307e1cfce37bd85 DE-627 ger DE-627 rakwb eng Roberta Russo verfasserin aut The Greenland shark Somniosus microcephalus-Hemoglobins and ligand-binding properties. 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A large amount of data is currently available on the adaptive mechanisms of polar bony fish hemoglobins, but structural information on those of cartilaginous species is scarce. This study presents the first characterisation of the hemoglobin system of one of the longest-living vertebrate species (392 ± 120 years), the Arctic shark Somniosus microcephalus. Three major hemoglobins are found in its red blood cells and are made of two copies of the same α globin combined with two copies of three very similar β subunits. The three hemoglobins show very similar oxygenation and carbonylation properties, which are unaffected by urea, a very important compound in marine elasmobranch physiology. They display identical electronic absorption and resonance Raman spectra, indicating that their heme-pocket structures are identical or highly similar. The quaternary transition equilibrium between the relaxed (R) and the tense (T) states is more dependent on physiological allosteric effectors than in human hemoglobin, as also demonstrated in polar teleost hemoglobins. Similar to other cartilaginous fishes, we found no evidence for functional differentiation among the three isoforms. The very similar ligand-binding properties suggest that regulatory control of O2 transport may be at the cellular level and that it may involve changes in the cellular concentrations of allosteric effectors and/or variations of other systemic factors. The hemoglobins of this polar shark have evolved adaptive decreases in O2 affinity in comparison to temperate sharks. Medicine R Science Q Daniela Giordano verfasserin aut Gianluca Paredi verfasserin aut Francesco Marchesani verfasserin aut Lisa Milazzo verfasserin aut Giovanna Altomonte verfasserin aut Pietro Del Canale verfasserin aut Stefania Abbruzzetti verfasserin aut Paolo Ascenzi verfasserin aut Guido di Prisco verfasserin aut Cristiano Viappiani verfasserin aut Angela Fago verfasserin aut Stefano Bruno verfasserin aut Giulietta Smulevich verfasserin aut Cinzia Verde verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 12(2017), 10, p e0186181 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:12 year:2017 number:10, p e0186181 https://doi.org/10.1371/journal.pone.0186181 kostenfrei https://doaj.org/article/a91549d51c924dcc9307e1cfce37bd85 kostenfrei http://europepmc.org/articles/PMC5638460?pdf=render kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2017 10, p e0186181
allfieldsGer	10.1371/journal.pone.0186181 doi (DE-627)DOAJ017223873 (DE-599)DOAJa91549d51c924dcc9307e1cfce37bd85 DE-627 ger DE-627 rakwb eng Roberta Russo verfasserin aut The Greenland shark Somniosus microcephalus-Hemoglobins and ligand-binding properties. 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A large amount of data is currently available on the adaptive mechanisms of polar bony fish hemoglobins, but structural information on those of cartilaginous species is scarce. This study presents the first characterisation of the hemoglobin system of one of the longest-living vertebrate species (392 ± 120 years), the Arctic shark Somniosus microcephalus. Three major hemoglobins are found in its red blood cells and are made of two copies of the same α globin combined with two copies of three very similar β subunits. The three hemoglobins show very similar oxygenation and carbonylation properties, which are unaffected by urea, a very important compound in marine elasmobranch physiology. They display identical electronic absorption and resonance Raman spectra, indicating that their heme-pocket structures are identical or highly similar. The quaternary transition equilibrium between the relaxed (R) and the tense (T) states is more dependent on physiological allosteric effectors than in human hemoglobin, as also demonstrated in polar teleost hemoglobins. Similar to other cartilaginous fishes, we found no evidence for functional differentiation among the three isoforms. The very similar ligand-binding properties suggest that regulatory control of O2 transport may be at the cellular level and that it may involve changes in the cellular concentrations of allosteric effectors and/or variations of other systemic factors. The hemoglobins of this polar shark have evolved adaptive decreases in O2 affinity in comparison to temperate sharks. Medicine R Science Q Daniela Giordano verfasserin aut Gianluca Paredi verfasserin aut Francesco Marchesani verfasserin aut Lisa Milazzo verfasserin aut Giovanna Altomonte verfasserin aut Pietro Del Canale verfasserin aut Stefania Abbruzzetti verfasserin aut Paolo Ascenzi verfasserin aut Guido di Prisco verfasserin aut Cristiano Viappiani verfasserin aut Angela Fago verfasserin aut Stefano Bruno verfasserin aut Giulietta Smulevich verfasserin aut Cinzia Verde verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 12(2017), 10, p e0186181 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:12 year:2017 number:10, p e0186181 https://doi.org/10.1371/journal.pone.0186181 kostenfrei https://doaj.org/article/a91549d51c924dcc9307e1cfce37bd85 kostenfrei http://europepmc.org/articles/PMC5638460?pdf=render kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2017 10, p e0186181
allfieldsSound	10.1371/journal.pone.0186181 doi (DE-627)DOAJ017223873 (DE-599)DOAJa91549d51c924dcc9307e1cfce37bd85 DE-627 ger DE-627 rakwb eng Roberta Russo verfasserin aut The Greenland shark Somniosus microcephalus-Hemoglobins and ligand-binding properties. 2017 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A large amount of data is currently available on the adaptive mechanisms of polar bony fish hemoglobins, but structural information on those of cartilaginous species is scarce. This study presents the first characterisation of the hemoglobin system of one of the longest-living vertebrate species (392 ± 120 years), the Arctic shark Somniosus microcephalus. Three major hemoglobins are found in its red blood cells and are made of two copies of the same α globin combined with two copies of three very similar β subunits. The three hemoglobins show very similar oxygenation and carbonylation properties, which are unaffected by urea, a very important compound in marine elasmobranch physiology. They display identical electronic absorption and resonance Raman spectra, indicating that their heme-pocket structures are identical or highly similar. The quaternary transition equilibrium between the relaxed (R) and the tense (T) states is more dependent on physiological allosteric effectors than in human hemoglobin, as also demonstrated in polar teleost hemoglobins. Similar to other cartilaginous fishes, we found no evidence for functional differentiation among the three isoforms. The very similar ligand-binding properties suggest that regulatory control of O2 transport may be at the cellular level and that it may involve changes in the cellular concentrations of allosteric effectors and/or variations of other systemic factors. The hemoglobins of this polar shark have evolved adaptive decreases in O2 affinity in comparison to temperate sharks. Medicine R Science Q Daniela Giordano verfasserin aut Gianluca Paredi verfasserin aut Francesco Marchesani verfasserin aut Lisa Milazzo verfasserin aut Giovanna Altomonte verfasserin aut Pietro Del Canale verfasserin aut Stefania Abbruzzetti verfasserin aut Paolo Ascenzi verfasserin aut Guido di Prisco verfasserin aut Cristiano Viappiani verfasserin aut Angela Fago verfasserin aut Stefano Bruno verfasserin aut Giulietta Smulevich verfasserin aut Cinzia Verde verfasserin aut In PLoS ONE Public Library of Science (PLoS), 2007 12(2017), 10, p e0186181 (DE-627)523574592 (DE-600)2267670-3 19326203 nnns volume:12 year:2017 number:10, p e0186181 https://doi.org/10.1371/journal.pone.0186181 kostenfrei https://doaj.org/article/a91549d51c924dcc9307e1cfce37bd85 kostenfrei http://europepmc.org/articles/PMC5638460?pdf=render kostenfrei https://doaj.org/toc/1932-6203 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_34 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_235 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2031 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2061 GBV_ILN_2111 GBV_ILN_2113 GBV_ILN_2190 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 12 2017 10, p e0186181
language	English
source	In PLoS ONE 12(2017), 10, p e0186181 volume:12 year:2017 number:10, p e0186181
sourceStr	In PLoS ONE 12(2017), 10, p e0186181 volume:12 year:2017 number:10, p e0186181
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Medicine R Science Q
isfreeaccess_bool	true
container_title	PLoS ONE
authorswithroles_txt_mv	Roberta Russo @@aut@@ Daniela Giordano @@aut@@ Gianluca Paredi @@aut@@ Francesco Marchesani @@aut@@ Lisa Milazzo @@aut@@ Giovanna Altomonte @@aut@@ Pietro Del Canale @@aut@@ Stefania Abbruzzetti @@aut@@ Paolo Ascenzi @@aut@@ Guido di Prisco @@aut@@ Cristiano Viappiani @@aut@@ Angela Fago @@aut@@ Stefano Bruno @@aut@@ Giulietta Smulevich @@aut@@ Cinzia Verde @@aut@@
publishDateDaySort_date	2017-01-01T00:00:00Z
hierarchy_top_id	523574592
id	DOAJ017223873
language_de	englisch
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author	Roberta Russo
spellingShingle	Roberta Russo misc Medicine misc R misc Science misc Q The Greenland shark Somniosus microcephalus-Hemoglobins and ligand-binding properties.
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title	The Greenland shark Somniosus microcephalus-Hemoglobins and ligand-binding properties.
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title_sort	greenland shark somniosus microcephalus-hemoglobins and ligand-binding properties
title_auth	The Greenland shark Somniosus microcephalus-Hemoglobins and ligand-binding properties.
abstract	A large amount of data is currently available on the adaptive mechanisms of polar bony fish hemoglobins, but structural information on those of cartilaginous species is scarce. This study presents the first characterisation of the hemoglobin system of one of the longest-living vertebrate species (392 ± 120 years), the Arctic shark Somniosus microcephalus. Three major hemoglobins are found in its red blood cells and are made of two copies of the same α globin combined with two copies of three very similar β subunits. The three hemoglobins show very similar oxygenation and carbonylation properties, which are unaffected by urea, a very important compound in marine elasmobranch physiology. They display identical electronic absorption and resonance Raman spectra, indicating that their heme-pocket structures are identical or highly similar. The quaternary transition equilibrium between the relaxed (R) and the tense (T) states is more dependent on physiological allosteric effectors than in human hemoglobin, as also demonstrated in polar teleost hemoglobins. Similar to other cartilaginous fishes, we found no evidence for functional differentiation among the three isoforms. The very similar ligand-binding properties suggest that regulatory control of O2 transport may be at the cellular level and that it may involve changes in the cellular concentrations of allosteric effectors and/or variations of other systemic factors. The hemoglobins of this polar shark have evolved adaptive decreases in O2 affinity in comparison to temperate sharks.
abstractGer	A large amount of data is currently available on the adaptive mechanisms of polar bony fish hemoglobins, but structural information on those of cartilaginous species is scarce. This study presents the first characterisation of the hemoglobin system of one of the longest-living vertebrate species (392 ± 120 years), the Arctic shark Somniosus microcephalus. Three major hemoglobins are found in its red blood cells and are made of two copies of the same α globin combined with two copies of three very similar β subunits. The three hemoglobins show very similar oxygenation and carbonylation properties, which are unaffected by urea, a very important compound in marine elasmobranch physiology. They display identical electronic absorption and resonance Raman spectra, indicating that their heme-pocket structures are identical or highly similar. The quaternary transition equilibrium between the relaxed (R) and the tense (T) states is more dependent on physiological allosteric effectors than in human hemoglobin, as also demonstrated in polar teleost hemoglobins. Similar to other cartilaginous fishes, we found no evidence for functional differentiation among the three isoforms. The very similar ligand-binding properties suggest that regulatory control of O2 transport may be at the cellular level and that it may involve changes in the cellular concentrations of allosteric effectors and/or variations of other systemic factors. The hemoglobins of this polar shark have evolved adaptive decreases in O2 affinity in comparison to temperate sharks.
abstract_unstemmed	A large amount of data is currently available on the adaptive mechanisms of polar bony fish hemoglobins, but structural information on those of cartilaginous species is scarce. This study presents the first characterisation of the hemoglobin system of one of the longest-living vertebrate species (392 ± 120 years), the Arctic shark Somniosus microcephalus. Three major hemoglobins are found in its red blood cells and are made of two copies of the same α globin combined with two copies of three very similar β subunits. The three hemoglobins show very similar oxygenation and carbonylation properties, which are unaffected by urea, a very important compound in marine elasmobranch physiology. They display identical electronic absorption and resonance Raman spectra, indicating that their heme-pocket structures are identical or highly similar. The quaternary transition equilibrium between the relaxed (R) and the tense (T) states is more dependent on physiological allosteric effectors than in human hemoglobin, as also demonstrated in polar teleost hemoglobins. Similar to other cartilaginous fishes, we found no evidence for functional differentiation among the three isoforms. The very similar ligand-binding properties suggest that regulatory control of O2 transport may be at the cellular level and that it may involve changes in the cellular concentrations of allosteric effectors and/or variations of other systemic factors. The hemoglobins of this polar shark have evolved adaptive decreases in O2 affinity in comparison to temperate sharks.
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title_short	The Greenland shark Somniosus microcephalus-Hemoglobins and ligand-binding properties.
url	https://doi.org/10.1371/journal.pone.0186181 https://doaj.org/article/a91549d51c924dcc9307e1cfce37bd85 http://europepmc.org/articles/PMC5638460?pdf=render https://doaj.org/toc/1932-6203
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The Greenland shark Somniosus microcephalus-Hemoglobins and ligand-binding properties.

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