Evidence map›Paper›PMID 35514567›Full record

ArticleRSC advances2020

Mutation-induced change in chignolin stability from π-turn to α-turn.

Yutaka Maruyama, Shunpei Koroku, Misaki Imai, Koh Takeuchi, Ayori Mitsutake

Abstract read
In one paragraph

Article in RSC advances, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

  1. Article
  2. π-Turns in Peptides: A Crystal-State Literature Survey.Journal of peptide science : an official publication of the European Peptide Society · 2025
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Analysis of Protein Folding Simulation with Moving Root Mean Square Deviation.Journal of chemical information and modeling · 2023
    Article
  8. Article
  9. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Yutaka MaruyamaArchitecture Development Team, FLAGSHIP 2020 Project, RIKEN Center for Computational Science Kobe 650-0047 Japan.
Shunpei KorokuDepartment of Physics, School of Science and Technology, Meiji University 1-1-1 Higashi-Mita, Tama-ku Kawasaki-shi Kanagawa 214-8571 Japan ayori@meiji.ac.jp.
Misaki ImaiCellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology 2-3-26 Aomi Koto Tokyo 135-0064 Japan.
Koh TakeuchiCellular and Molecular Biotechnology Research Institute, National Institute of Advanced Industrial Science and Technology 2-3-26 Aomi Koto Tokyo 135-0064 Japan.
Ayori MitsutakeDepartment of Physics, School of Science and Technology, Meiji University 1-1-1 Higashi-Mita, Tama-ku Kawasaki-shi Kanagawa 214-8571 Japan ayori@meiji.ac.jp.ORCID https://orcid.org/0000-0002-4194-7255

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chignolin, which consists of 10 amino acids, adopts two stable states in simulations at room temperature at 1 atm: the native and misfolded states. The sequence of chignolin is optimized to form a stable π-turn and thus the native state has a π-turn from Asp3 to Thr8. On the other hand, the misfolded state adopts an α-turn from Asp3 to Gly7. We previously investigated the differences in the stability mechanism of the two states using computational techniques. Our previous detailed energy analysis implied that the native state was stabilized by hydrogen bonding between the side chain atoms of Thr6 and Thr8, and Thr8 was not involved in stabilization of the misfolded state. Thus, we predicted that mutation of Thr8 to a neutral amino acid could stabilize the misfolded structure over the native structure. In the present work, we performed 4 μs molecular dynamics simulations for 19 mutants of the 8th residue. Among them, the T8I, T8F, T8P, T8N, and T8Y mutants, in which the 8th residue was changed to a neutral residue, formed only the misfolded structure at room temperature. Even at high temperature, for the T8P mutant, the native structure was not observed, as the T8P mutant cannot form the native structure because of steric hindrance caused by the distinctive cyclic structure of proline. Interestingly, the T8P mutant at high temperature has

Identifiers

PMID35514567
PMCPMC9054626

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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.