ArticleJournal of molecular biology2007
Increasing protein conformational stability by optimizing beta-turn sequence.
Article in Journal of molecular biology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers.
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Who cites it
60 citing papers in PubMed.
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- C-terminal determinants for RNA binding motif 7 protein stability and RNA recognition.Biophysical chemistry · 2023Article
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Authors and funding
4 authors.
Funding
Abstract
Protein conformational stability is an important concern in many fields. Here, we describe a strategy for significantly increasing conformational stability by optimizing beta-turn sequence. Proline and glycine residues are statistically preferred at several beta-turn positions, presumably because their unique side-chains contribute favorably to conformational stability in certain beta-turn positions. However, beta-turn sequences often deviate from preferred proline or preferred glycine. Therefore, our strategy involves replacing non-proline and non-glycine beta-turn residues with preferred proline or preferred glycine residues. Here, we develop guidelines for selecting appropriate mutations, and present results for five mutations (S31P, S42G, S48P, T76P, and Q77G) that significantly increase the conformational stability of RNase Sa. The increases in stability ranged from 0.7 kcal/mol to 1.3 kcal/mol. The strategy was successful in overlapping or isolated beta-turns, at buried (up to 50%) or completely exposed sites, and at relatively flexible or inflexible sites. Considering the significant number of beta-turn residues in every globular protein and the frequent deviation of beta-turn sequences from preferred proline and preferred glycine residues, this simple, efficient strategy will be useful for increasing the conformational stability of proteins.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.