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Title: Nebulin stiffens the thin filament and augments cross-bridge interaction in skeletal muscle

Abstract

Nebulin is a giant sarcomeric protein that spans along the actin filament in skeletal muscle, from the Z-disk to near the thin filament pointed end. Mutations in nebulin cause muscle weakness in nemaline myopathy patients, suggesting that nebulin plays important roles in force generation, yet little is known about nebulin’s influence on thin filament structure and function. Here, we used small-angle X-ray diffraction and compared intact muscle deficient in nebulin (using a conditional nebulin-knockout, Neb cKO) with control (Ctrl) muscle. When muscles were activated, the spacing of the actin subunit repeat (27 Å) increased in both genotypes; when converted to thin filament stiffness, the obtained value was 30 pN/nm in Ctrl muscle and 10 pN/nm in Neb cKO muscle; that is, the thin filament was approximately threefold stiffer when nebulin was present. In contrast, the thick filament stiffness was not different between the genotypes. A significantly shorter left-handed (59 Å) thin filament helical pitch was found in passive and contracting Neb cKO muscles, as well as impaired tropomyosin and troponin movement. Additionally, a reduced myosin mass transfer toward the thin filament in contracting Neb cKO muscle was found, suggesting reduced cross-bridge interaction. Here, we conclude that nebulin is critically importantmore » for physiological force levels, as it greatly stiffens the skeletal muscle thin filament and contributes to thin filament activation and cross-bridge recruitment.« less

Authors:
ORCiD logo [1];  [1];  [2];  [1];  [1];  [2];  [2];  [1]
  1. Univ. of Arizona, Tucson, AZ (United States)
  2. Illinois Inst. of Technology, Chicago, IL (United States)
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE; National Institutes of Health (NIH); National Inst. of General Medical Sciences (NIGMS)
OSTI Identifier:
1478092
Grant/Contract Number:  
AC02-06CH11357; P41 GM103622; 1S10OD018090-01
Resource Type:
Accepted Manuscript
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 115; Journal Issue: 41; Journal ID: ISSN 0027-8424
Publisher:
National Academy of Sciences
Country of Publication:
United States
Language:
ENGLISH
Subject:
59 BASIC BIOLOGICAL SCIENCES; X-ray diffraction; skeletal myopathy; muscle biology; physiology

Citation Formats

Kiss, Balázs, Lee, Eun-Jeong, Ma, Weikang, Li, Frank W., Tonino, Paola, Mijailovich, Srboljub M., Irving, Thomas C., and Granzier, Henk L. Nebulin stiffens the thin filament and augments cross-bridge interaction in skeletal muscle. United States: N. p., 2018. Web. doi:10.1073/pnas.1804726115.
Kiss, Balázs, Lee, Eun-Jeong, Ma, Weikang, Li, Frank W., Tonino, Paola, Mijailovich, Srboljub M., Irving, Thomas C., & Granzier, Henk L. Nebulin stiffens the thin filament and augments cross-bridge interaction in skeletal muscle. United States. https://doi.org/10.1073/pnas.1804726115
Kiss, Balázs, Lee, Eun-Jeong, Ma, Weikang, Li, Frank W., Tonino, Paola, Mijailovich, Srboljub M., Irving, Thomas C., and Granzier, Henk L. Mon . "Nebulin stiffens the thin filament and augments cross-bridge interaction in skeletal muscle". United States. https://doi.org/10.1073/pnas.1804726115. https://www.osti.gov/servlets/purl/1478092.
@article{osti_1478092,
title = {Nebulin stiffens the thin filament and augments cross-bridge interaction in skeletal muscle},
author = {Kiss, Balázs and Lee, Eun-Jeong and Ma, Weikang and Li, Frank W. and Tonino, Paola and Mijailovich, Srboljub M. and Irving, Thomas C. and Granzier, Henk L.},
abstractNote = {Nebulin is a giant sarcomeric protein that spans along the actin filament in skeletal muscle, from the Z-disk to near the thin filament pointed end. Mutations in nebulin cause muscle weakness in nemaline myopathy patients, suggesting that nebulin plays important roles in force generation, yet little is known about nebulin’s influence on thin filament structure and function. Here, we used small-angle X-ray diffraction and compared intact muscle deficient in nebulin (using a conditional nebulin-knockout, Neb cKO) with control (Ctrl) muscle. When muscles were activated, the spacing of the actin subunit repeat (27 Å) increased in both genotypes; when converted to thin filament stiffness, the obtained value was 30 pN/nm in Ctrl muscle and 10 pN/nm in Neb cKO muscle; that is, the thin filament was approximately threefold stiffer when nebulin was present. In contrast, the thick filament stiffness was not different between the genotypes. A significantly shorter left-handed (59 Å) thin filament helical pitch was found in passive and contracting Neb cKO muscles, as well as impaired tropomyosin and troponin movement. Additionally, a reduced myosin mass transfer toward the thin filament in contracting Neb cKO muscle was found, suggesting reduced cross-bridge interaction. Here, we conclude that nebulin is critically important for physiological force levels, as it greatly stiffens the skeletal muscle thin filament and contributes to thin filament activation and cross-bridge recruitment.},
doi = {10.1073/pnas.1804726115},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 41,
volume = 115,
place = {United States},
year = {Mon Sep 24 00:00:00 EDT 2018},
month = {Mon Sep 24 00:00:00 EDT 2018}
}

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Works referenced in this record:

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Myosin Heads Contribute to the Maintenance of Filament Order in Relaxed Rabbit Muscle
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  • Bershitsky, Sergey Y.; Koubassova, Natalia A.; Bennett, Pauline M.
  • Biophysical Journal, Vol. 99, Issue 6
  • DOI: 10.1016/j.bpj.2010.06.072

Thick-Filament Strain and Interfilament Spacing in Passive Muscle: Effect of Titin-Based Passive Tension
journal, March 2011


Altered myofilament function depresses force generation in patients with nebulin-based nemaline myopathy (NEM2)
journal, May 2010

  • Ottenheijm, Coen A. C.; Hooijman, Pleuni; DeChene, Elizabeth T.
  • Journal of Structural Biology, Vol. 170, Issue 2
  • DOI: 10.1016/j.jsb.2009.11.013

Nemaline myopathy caused by mutations in the nebulin gene may present as a distal myopathy
journal, August 2011

  • Lehtokari, Vilma-Lotta; Pelin, Katarina; Herczegfalvi, Agnes
  • Neuromuscular Disorders, Vol. 21, Issue 8
  • DOI: 10.1016/j.nmd.2011.05.012

The Nebulin family: an actin support group
journal, January 2011

  • Pappas, Christopher T.; Bliss, Katherine T.; Zieseniss, Anke
  • Trends in Cell Biology, Vol. 21, Issue 1
  • DOI: 10.1016/j.tcb.2010.09.005

Time-resolved x-ray diffraction study of the troponin-associated reflexions from the frog muscle
journal, September 1992


X-ray diffraction evidence for the extensibility of actin and myosin filaments during muscle contraction
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Analysis of equatorial x-ray diffraction patterns from muscle fibers: factors that affect the intensities
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The complete primary structure of human nebulinand its correlation to muscle structure
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X-ray Diffraction from Living Striated Muscle during Contraction
journal, June 1965

  • Elliott, G. F.; Lowy, J.; Millman, B. M.
  • Nature, Vol. 206, Issue 4991
  • DOI: 10.1038/2061357a0

Nebulin regulates thin filament length, contractility, and Z-disk structure in vivo
journal, August 2006

  • Witt, Christian C.; Burkart, Christoph; Labeit, Dietmar
  • The EMBO Journal, Vol. 25, Issue 16
  • DOI: 10.1038/sj.emboj.7601242

A myopathy-linked tropomyosin mutation severely alters thin filament conformational changes during activation
journal, May 2010

  • Ochala, J.; Iwamoto, H.; Larsson, L.
  • Proceedings of the National Academy of Sciences, Vol. 107, Issue 21
  • DOI: 10.1073/pnas.1001733107

Three-dimensional stochastic model of actin–myosin binding in the sarcomere lattice
journal, November 2016

  • Mijailovich, Srboljub M.; Kayser-Herold, Oliver; Stojanovic, Boban
  • The Journal of General Physiology, Vol. 148, Issue 6
  • DOI: 10.1085/jgp.201611608

Deleting exon 55 from the nebulin gene induces severe muscle weakness in a mouse model for nemaline myopathy
journal, May 2013

  • Ottenheijm, Coen A. C.; Buck, Danielle; de Winter, Josine M.
  • Brain, Vol. 136, Issue 6
  • DOI: 10.1093/brain/awt113

Thin filament length dysregulation contributes to muscle weakness in nemaline myopathy patients with nebulin deficiency
journal, April 2009

  • Ottenheijm, C. A. C.; Witt, C. C.; Stienen, G. J.
  • Human Molecular Genetics, Vol. 18, Issue 13
  • DOI: 10.1093/hmg/ddp168

Nebulin deficiency in adult muscle causes sarcomere defects and muscle-type-dependent changes in trophicity: novel insights in nemaline myopathy
journal, June 2015

  • Li, Frank; Buck, Danielle; De Winter, Josine
  • Human Molecular Genetics, Vol. 24, Issue 18
  • DOI: 10.1093/hmg/ddv243

Disrupted myosin cross-bridge cycling kinetics triggers muscle weakness in nebulin-related myopathy
journal, June 2011

  • Ochala, Julien; Lehtokari, Vilma-Lotta; Iwamoto, Hiroyuki
  • The FASEB Journal, Vol. 25, Issue 6
  • DOI: 10.1096/fj.10-176727

The Filament Lattice of Striated Muscle
journal, April 1998


Works referencing / citing this record:

Nebulin: big protein with big responsibilities
journal, January 2020

  • Yuen, Michaela; Ottenheijm, Coen A. C.
  • Journal of Muscle Research and Cell Motility, Vol. 41, Issue 1
  • DOI: 10.1007/s10974-019-09565-3

Nebulin and titin modulate cross-bridge cycling and length-dependent calcium sensitivity
journal, April 2019

  • Mijailovich, Srboljub M.; Stojanovic, Boban; Nedic, Djordje
  • The Journal of General Physiology, Vol. 151, Issue 5
  • DOI: 10.1085/jgp.201812165

Nebulin no longer nebulous
journal, October 2018


Elastic domains of giant proteins in striated muscle: Modeling compliance with rulers
journal, April 2019


KBTBD13 is an actin-binding protein that modulates muscle kinetics
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Nebulin nemaline myopathy recapitulated in a compound heterozygous mouse model with both a missense and a nonsense mutation in Neb
journal, February 2020

  • Laitila, Jenni M.; McNamara, Elyshia L.; Wingate, Catherine D.
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Omecamtiv mecarbil lowers the contractile deficit in a mouse model of nebulin-based nemaline myopathy
journal, November 2019


Functional Characterization of the Intact Diaphragm in a Nebulin-Based Nemaline Myopathy (NM) Model-Effects of the Fast Skeletal Muscle Troponin Activator tirasemtiv
journal, October 2019

  • Lee, Eun-Jeong; Kolb, Justin; Hwee, Darren T.
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  • DOI: 10.3390/ijms20205008

Estimation of Forces on Actin Filaments in Living Muscle from X-ray Diffraction Patterns and Mechanical Data
journal, November 2019

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  • DOI: 10.3390/ijms20236044

Nebulin and titin modulate cross-bridge cycling and length-dependent calcium sensitivity
journal, April 2019

  • Mijailovich, Srboljub M.; Stojanovic, Boban; Nedic, Djordje
  • The Journal of General Physiology, Vol. 151, Issue 5
  • DOI: 10.1085/jgp.201812165

Elastic domains of giant proteins in striated muscle: Modeling compliance with rulers
journal, April 2019


Omecamtiv mecarbil lowers the contractile deficit in a mouse model of nebulin-based nemaline myopathy
journal, November 2019


Functional Characterization of the Intact Diaphragm in a Nebulin-Based Nemaline Myopathy (NM) Model-Effects of the Fast Skeletal Muscle Troponin Activator tirasemtiv
journal, October 2019

  • Lee, Eun-Jeong; Kolb, Justin; Hwee, Darren T.
  • International Journal of Molecular Sciences, Vol. 20, Issue 20
  • DOI: 10.3390/ijms20205008

Estimation of Forces on Actin Filaments in Living Muscle from X-ray Diffraction Patterns and Mechanical Data
journal, November 2019

  • Mijailovich, Srboljub M.; Prodanovic, Momcilo; Irving, Thomas C.
  • International Journal of Molecular Sciences, Vol. 20, Issue 23
  • DOI: 10.3390/ijms20236044