
<lom:lom xmlns:lom="https://oer-repo.uibk.ac.at/lom" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="https://oer-repo.uibk.ac.at/lom/latest https://w3id.org/oerbase/profiles/lomuibk/latest/schemas/lom-uibk.xsd">
  
<lom:general>
  
<lom:identifier>
  
<lom:catalog>phaidra.vetmeduni.ac.at</lom:catalog>

  
<lom:entry>
  
<lom:langstring xml:lang="x-none">o:3199</lom:langstring>

  
</lom:entry>

  
</lom:identifier>

  
<lom:identifier>
  
<lom:catalog>DOI</lom:catalog>

  
<lom:entry>
  
<lom:langstring xml:lang="x-none">10.7554/eLife.94616</lom:langstring>

  
</lom:entry>

  
</lom:identifier>

  
<lom:title>
  
<lom:langstring xml:lang="en">Remodeling of skeletal muscle myosin metabolic states in hibernating mammals</lom:langstring>

  
</lom:title>

  
<lom:description>
  
<lom:langstring xml:lang="en">Hibernation is a period of metabolic suppression utilized by many small and large mammal species to survive during winter periods. As the underlying cellular and molecular mechanisms remain incompletely understood, our study aimed to determine whether skeletal muscle myosin and its metabolic efficiency undergo alterations during hibernation to optimize energy utilization. We isolated muscle fibers from small hibernators, Ictidomys tridecemlineatus and Eliomys quercinus and larger hibernators, Ursus arctos and Ursus americanus. We then conducted loaded Mant-ATP chase experiments alongside X-ray diffraction to measure resting myosin dynamics and its ATP demand. In parallel, we performed multiple proteomics analyses. Our results showed a preservation of myosin structure in U. arctos and U. americanus during hibernation, whilst in I. tridecemlineatus and E. quercinus, changes in myosin metabolic states during torpor unexpectedly led to higher levels in energy expenditure of type II, fast-twitch muscle fibers at ambient lab temperatures (20 °C). Upon repeating loaded Mant-ATP chase experiments at 8 °C (near the body temperature of torpid animals), we found that myosin ATP consumption in type II muscle fibers was reduced by 77-107% during torpor compared to active periods. Additionally, we observed Myh2 hyper-phosphorylation during torpor in I. tridecemilineatus, which was predicted to stabilize the myosin molecule. This may act as a potential molecular mechanism mitigating myosin-associated increases in skeletal muscle energy expenditure during periods of torpor in response to cold exposure. Altogether, we demonstrate that resting myosin is altered in hibernating mammals, contributing to significant changes to the ATP consumption of skeletal muscle. Additionally, we observe that it is further altered in response to cold exposure and highlight myosin as a potentially contributor to skeletal muscle non-shivering thermogenesis.</lom:langstring>

  
</lom:description>

  
<lom:language>eng</lom:language>

  
<lom:keyword>
  
<lom:langstring xml:lang="en">Animals; Hibernation physiology; Energy Metabolism; Skeletal Muscle Myosinsmetabolism; Ursidaemetabolism physiology; Adenosine Triphosphate metabolism; Muscle, Skeletal metabolism physiology; Muscle Fibers, Skeletal metabolism; Proteomics</lom:langstring>

  
</lom:keyword>

  
</lom:general>

  
<lom:lifecycle>
  
<lom:datetime>2024-07-08T14:33:31.665Z</lom:datetime>

  
<lom:contribute>
  
<lom:role>
  
<lom:source>
  
<lom:langstring xml:lang="x-none">LOMv1.0</lom:langstring>

  
</lom:source>

  
<lom:value>
  
<lom:langstring xml:lang="x-none">Author</lom:langstring>

  
</lom:value>

  
</lom:role>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Lewis;Christopher T. A.;
FN:Christopher T. A. Lewis
X-ORCID:https://orcid.org/0000-0003-4477-422X
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Ochala;Julien;
FN:Julien Ochala
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Sprenger;Ryan J.;
FN:Ryan J. Sprenger
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Drew;Kelly;
FN:Kelly Drew
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Toien;Oivind;
FN:Oivind Toien
X-ORCID:https://orcid.org/0000-0001-5967-2483
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Barnes;Brian;
FN:Brian Barnes
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Fedorov;Vadim B.;
FN:Vadim B. Fedorov
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Goropashnaya;Anna V.;
FN:Anna V. Goropashnaya
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Staples;James F.;
FN:James F. Staples
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Giroud;Sylvain;
FN:Sylvain Giroud
X-ORCID:https://orcid.org/0000-0001-6621-7462
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Frobert;Ole;
FN:Ole Frobert
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Amigo;Nuria;
FN:Nuria Amigo
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Merino;Carla;
FN:Carla Merino
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Kuehn;Michel N.;
FN:Michel N. Kuehn
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Hessel;Anthony L.;
FN:Anthony L. Hessel
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Iwamoto;Hiroyuki;
FN:Hiroyuki Iwamoto
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Zhang;Changxin;
FN:Changxin Zhang
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Gronset;Magnus;
FN:Magnus Gronset
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Seaborne;Robert A. E.;
FN:Robert A. E. Seaborne
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Laitila;Jenni;
FN:Jenni Laitila
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Olsen;Mathilde S.;
FN:Mathilde S. Olsen
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Melhedegaard;Elise G.;
FN:Elise G. Melhedegaard
END:VCARD</lom:vcard>

  
</lom:centity>

  
<lom:centity>
  
<lom:vcard>BEGIN:VCARD
VERSION:3.0
N:Ognjanovic;Marija M.;
FN:Marija M. Ognjanovic
END:VCARD</lom:vcard>

  
</lom:centity>

  
</lom:contribute>

  
</lom:lifecycle>

  
<lom:educational>
  
<lom:learningresourcetype>
  
<lom:source>
  
<lom:langstring xml:lang="x-none">https://w3id.org/kim/hcrt/scheme</lom:langstring>

  
</lom:source>

  
<lom:id>https://w3id.org/kim/hcrt/text</lom:id>

  
<lom:entry>
  
<lom:langstring xml:lang="de">Textdokument</lom:langstring>

  
<lom:langstring xml:lang="en">Text</lom:langstring>

  
</lom:entry>

  
</lom:learningresourcetype>

  
</lom:educational>

  
<lom:rights>
  
<lom:copyrightandotherrestrictions>
  
<lom:source>
  
<lom:langstring xml:lang="x-none">LOMv1.0</lom:langstring>

  
</lom:source>

  
<lom:value>
  
<lom:langstring xml:lang="x-none">yes</lom:langstring>

  
</lom:value>

  
</lom:copyrightandotherrestrictions>

  
<lom:description>
  
<lom:langstring xml:lang="x-t-cc-url">https://creativecommons.org/licenses/by/4.0</lom:langstring>

  
</lom:description>

  
</lom:rights>

  
<lom:technical>
  
<lom:format>application/pdf</lom:format>

  
<lom:size>4067908</lom:size>

  
<lom:location>https://phaidra.vetmeduni.ac.at/o:3199</lom:location>

  
<lom:thumbnail>
  
<lom:url>https://phaidra.vetmeduni.ac.at/api/object/o:3199/thumbnail</lom:url>

  
</lom:thumbnail>

  
</lom:technical>

  
<lom:classification>
  
<lom:purpose>
  
<lom:source>
  
<lom:langstring xml:lang="x-none">LOMv1.0</lom:langstring>

  
</lom:source>

  
<lom:value>
  
<lom:langstring xml:lang="x-none">discipline</lom:langstring>

  
</lom:value>

  
</lom:purpose>

  
</lom:classification>

  
</lom:lom>