Journal of Molecular Biology, volume 337, issue 4, pages 905-915

Very Fast Folding and Association of a Trimerization Domain from Bacteriophage T4 Fibritin

Publication typeJournal Article
Publication date2004-04-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor5.6
ISSN00222836, 10898638
Molecular Biology
Structural Biology
Abstract
The foldon domain constitutes the C-terminal 30 amino acid residues of the trimeric protein fibritin from bacteriophage T4. Its function is to promote folding and trimerization of fibritin. We investigated structure, stability and folding mechanism of the isolated foldon domain. The domain folds into the same trimeric beta-propeller structure as in fibritin and undergoes a two-state unfolding transition from folded trimer to unfolded monomers. The folding kinetics involve several consecutive reactions. Structure formation in the region of the single beta-hairpin of each monomer occurs on the submillisecond timescale. This reaction is followed by two consecutive association steps with rate constants of 1.9(+/-0.5)x10(6)M(-1)s(-1) and 5.4(+/-0.3)x10(6)M(-1)s(-1) at 0.58 M GdmCl, respectively. This is similar to the fastest reported bimolecular association reactions for folding of dimeric proteins. At low concentrations of protein, folding shows apparent third-order kinetics. At high concentrations of protein, the reaction becomes almost independent of protein concentrations with a half-time of about 3 ms, indicating that a first-order folding step from a partially folded trimer to the native protein (k=210 +/- 20 s(-1)) becomes rate-limiting. Our results suggest that all steps on the folding/trimerization pathway of the foldon domain are evolutionarily optimized for rapid and specific initiation of trimer formation during fibritin assembly. The results further show that beta-hairpins allow efficient and rapid protein-protein interactions during folding.

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Güthe S. et al. Very Fast Folding and Association of a Trimerization Domain from Bacteriophage T4 Fibritin // Journal of Molecular Biology. 2004. Vol. 337. No. 4. pp. 905-915.
GOST all authors (up to 50) Copy
Güthe S., Kapinos L., Möglich A., Meier S., Meier S., Grzesiek S., KIEFHABER T. Very Fast Folding and Association of a Trimerization Domain from Bacteriophage T4 Fibritin // Journal of Molecular Biology. 2004. Vol. 337. No. 4. pp. 905-915.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.jmb.2004.02.020
UR - https://doi.org/10.1016/j.jmb.2004.02.020
TI - Very Fast Folding and Association of a Trimerization Domain from Bacteriophage T4 Fibritin
T2 - Journal of Molecular Biology
AU - Güthe, Sarah
AU - Meier, Sebastian
AU - KIEFHABER, THOMAS
AU - Kapinos, Larisa
AU - Möglich, Andreas
AU - Meier, Sebastian
AU - Grzesiek, Stephan
PY - 2004
DA - 2004/04/01 00:00:00
PB - Elsevier
SP - 905-915
IS - 4
VL - 337
SN - 0022-2836
SN - 1089-8638
ER -
BibTex |
Cite this
BibTex Copy
@article{2004_Güthe,
author = {Sarah Güthe and Sebastian Meier and THOMAS KIEFHABER and Larisa Kapinos and Andreas Möglich and Sebastian Meier and Stephan Grzesiek},
title = {Very Fast Folding and Association of a Trimerization Domain from Bacteriophage T4 Fibritin},
journal = {Journal of Molecular Biology},
year = {2004},
volume = {337},
publisher = {Elsevier},
month = {apr},
url = {https://doi.org/10.1016/j.jmb.2004.02.020},
number = {4},
pages = {905--915},
doi = {10.1016/j.jmb.2004.02.020}
}
MLA
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MLA Copy
Güthe, Sarah, et al. “Very Fast Folding and Association of a Trimerization Domain from Bacteriophage T4 Fibritin.” Journal of Molecular Biology, vol. 337, no. 4, Apr. 2004, pp. 905-915. https://doi.org/10.1016/j.jmb.2004.02.020.
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