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@ARTICLE{Stacklies:94241,
author = {Stacklies, W. and Vega, M. C. and Wilmanns, M. and Gräter,
F. and DESY},
title = {{M}echanical {N}etwork in {T}itin {I}mmunoglobulin from
{F}orce {D}istribution {A}nalysis},
journal = {PLoS Computational Biology},
volume = {5},
issn = {1553-734X},
address = {San Francisco, Calif.},
publisher = {Public Library of Science},
reportid = {PHPPUBDB-12668},
pages = {e1000306},
year = {2009},
abstract = {The role of mechanical force in cellular processes is
increasingly revealed by single molecule experiments and
simulations of force-induced transitions in proteins. How
the applied force propagates within proteins determines
their mechanical behavior yet remains largely unknown. We
present a new method based on molecular dynamics simulations
to disclose the distribution of strain in protein
structures, here for the newly determined high-resolution
crystal structure of I27, a titin immunoglobulin (IG)
domain. We obtain a sparse, spatially connected, and highly
anisotropic mechanical network. This allows us to detect
load-bearing motifs composed of interstrand hydrogen bonds
and hydrophobic core interactions, including parts distal to
the site to which force was applied. The role of the force
distribution pattern for mechanical stability is tested by
in silico unfolding of I27 mutants. We then compare the
observed force pattern to the sparse network of coevolved
residues found in this family. We find a remarkable overlap,
suggesting the force distribution to reflect constraints for
the evolutionary design of mechanical resistance in the IG
family. The force distribution analysis provides a molecular
interpretation of coevolution and opens the road to the
study of the mechanism of signal propagation in proteins in
general.},
keywords = {Computer Simulation / Cytoskeletal Proteins: chemistry /
Cytoskeletal Proteins: ultrastructure / Elastic Modulus /
Models, Chemical / Models, Molecular / Muscle Proteins:
chemistry / Muscle Proteins: ultrastructure / Protein
Structure, Tertiary / Stress, Mechanical / Cytoskeletal
Proteins (NLM Chemicals) / MYOT protein, human (NLM
Chemicals) / Muscle Proteins (NLM Chemicals)},
cin = {EMBL},
ddc = {570},
cid = {$I:(DE-H253)EMBL_-2012_-20130307$},
pnm = {FS Beamline without reference (POF1-550)},
pid = {G:(DE-H253)POF1-No-Ref-20130405},
experiment = {EXP:(DE-H253)Unknown-BL-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:19282960},
pmc = {pmc:PMC2643529},
UT = {WOS:000266214000011},
doi = {10.1371/journal.pcbi.1000306},
url = {https://bib-pubdb1.desy.de/record/94241},
}