Evidence map›Paper›PMID 33730849›Full record

ArticleBiomacromolecules2021

Impact of Arginine-Phosphate Interactions on the Reentrant Condensation of Disordered Proteins.

Samuel Lenton, Stefan Hervø-Hansen, Anton M Popov, Mark D Tully, Mikael Lund, Marie Skepö

Open access · hybridAbstract read
In one paragraph

Article in Biomacromolecules, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.2field-weighted citation impact, top 11% of its field
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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

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

22 citing papers in PubMed, 42 citations in OpenAlex.

  1. Structural and functional divergence of cancer hotspot mutations in CREBBP.Proceedings of the National Academy of Sciences of the United States of America · 2026
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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

6 authors at 2 institutions in 2 countries.

Samuel LentonTheoretical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.
Stefan Hervø-HansenTheoretical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.ORCID 0000-0002-9629-9195
Anton M PopovBM29 BIOSAXS, European Synchroton Radiation Facility, 71 avenue des Martyrs, Grenoble, Isère 38043, France.
Mark D TullyBM29 BIOSAXS, European Synchroton Radiation Facility, 71 avenue des Martyrs, Grenoble, Isère 38043, France.
Mikael LundTheoretical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.ORCID 0000-0001-8178-8175
Marie SkepöTheoretical Chemistry, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden.ORCID 0000-0002-8639-9993
Lund University · SEEuropean Synchrotron Radiation Facility · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Re-entrant condensation results in the formation of a condensed protein regime between two critical ion concentrations. The process is driven by neutralization and inversion of the protein charge by oppositely charged ions. Re-entrant condensation of cationic proteins by the polyvalent anions, pyrophosphate and tripolyphosphate, has previously been observed, but not for citrate, which has similar charge and size compared to the polyphosphates. Therefore, besides electrostatic interactions, other specific interactions between the polyphosphate ions and proteins must contribute. Here, we show that additional attractive interactions between arginine and tripolyphosphate determine the re-entrant condensation and decondensation boundaries of the cationic, intrinsically disordered saliva protein, histatin 5. Furthermore, we show by small-angle X-ray scattering (SAXS) that polyvalent anions cause compaction of histatin 5, as would be expected based solely on electrostatic interactions. Hence, we conclude that arginine-phosphate-specific interactions not only regulate solution properties but also influence the conformational ensemble of histatin 5, which is shown to vary with the number of arginine residues. Together, the results presented here provide further insight into an organizational mechanism that can be used to tune protein interactions in solution of both naturally occurring and synthetic proteins.

Indexed as

Intrinsically Disordered ProteinsArginineProtein ConformationScattering, Small AngleX-Ray DiffractionArginineIntrinsically Disordered Proteins

Identifiers

PMID33730849
PMCPMC8045028
OpenAlexW3137174366

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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 Socratic graph.