Evidence map›Paper›PMID 23741319›Full record

ArticlePloS one2013

Alternative computational protocols for supercharging protein surfaces for reversible unfolding and retention of stability.

Bryan S Der, Christien Kluwe, Aleksandr E Miklos, Ron Jacak, Sergey Lyskov, Jeffrey J Gray, George Georgiou, Andrew D Ellington, Brian Kuhlman

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
2.7field-weighted citation impact, top 9% 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

43 citing papers in PubMed, 112 citations in OpenAlex.

  1. Article
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  5. Site-Directed Mutagenesis Increased the Catalytic Activity and Stability ofInternational journal of molecular sciences · 2025
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  6. Patulin Detoxification by Evolutionarily Divergent Reductases ofJournal of agricultural and food chemistry · 2025
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  8. Review
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  11. Review
  12. Supercharged Phosphotriesterase for improved Paraoxon activity.Protein engineering, design & selection : PEDS · 2024
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
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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

9 authors at 3 institutions in 1 country.

Bryan S DerDepartment of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America.
Christien Kluwe
Aleksandr E Miklos
Ron Jacak
Sergey Lyskov
Jeffrey J Gray
George Georgiou
Andrew D Ellington
Brian Kuhlman
The University of Texas at Austin · USUniversity of North Carolina at Chapel Hill · USJohns Hopkins University · US

Funding

ROSETTA An Integrated Protein Structure Modeling SuiteR01GM073151 · NIGMS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI KUHLMAN, BRIAN A · 2005 to 2019
$7.8M
MOLECULAR AND CELLULAR BIOPHYSICS TRAINING PROGRAMT32GM008570 · NIGMS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI KUHLMAN, BRIAN A, SLEP, KEVIN C · 1995 to 2022
$5.1M
Prediction of the Structure of Therapeutic Antibodies with their AntigensR01GM078221 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI GRAY, JEFFREY J · 2006 to 2020
$4.0M
Designing Affinity and Specificity at Protein InterfacesR01GM073960 · NIGMS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI KUHLMAN, BRIAN A · 2005 to 2018
$3.1M
NIGMS NIH HHS GM073960NIGMS NIH HHS R01 GM073151NIGMS NIH HHS R01-GM073151NIGMS NIH HHS R01 GM073960NIGMS NIH HHS R01 GM078221NIGMS NIH HHS T32 GM008570NIGMS NIH HHS T32GM008570
6 · The paper itself

Abstract

Reengineering protein surfaces to exhibit high net charge, referred to as "supercharging", can improve reversibility of unfolding by preventing aggregation of partially unfolded states. Incorporation of charged side chains should be optimized while considering structural and energetic consequences, as numerous mutations and accumulation of like-charges can also destabilize the native state. A previously demonstrated approach deterministically mutates flexible polar residues (amino acids DERKNQ) with the fewest average neighboring atoms per side chain atom (AvNAPSA). Our approach uses Rosetta-based energy calculations to choose the surface mutations. Both protocols are available for use through the ROSIE web server. The automated Rosetta and AvNAPSA approaches for supercharging choose dissimilar mutations, raising an interesting division in surface charging strategy. Rosetta-supercharged variants of GFP (RscG) ranging from -11 to -61 and +7 to +58 were experimentally tested, and for comparison, we re-tested the previously developed AvNAPSA-supercharged variants of GFP (AscG) with +36 and -30 net charge. Mid-charge variants demonstrated ∼3-fold improvement in refolding with retention of stability. However, as we pushed to higher net charges, expression and soluble yield decreased, indicating that net charge or mutational load may be limiting factors. Interestingly, the two different approaches resulted in GFP variants with similar refolding properties. Our results show that there are multiple sets of residues that can be mutated to successfully supercharge a protein, and combining alternative supercharge protocols with experimental testing can be an effective approach for charge-based improvement to refolding.

Indexed as

Protein EngineeringSoftwareAmino AcidsAmino Acid SequenceAnimalsCnidariaGreen Fluorescent ProteinsHydrogen BondingModels, MolecularMolecular Sequence DataMutationProtein ConformationProtein StabilityProtein UnfoldingStatic ElectricityThermodynamicsAmino AcidsGreen Fluorescent Proteins

Identifiers

PMID23741319
PMCPMC3669367
OpenAlexW2151721114

What OpenQuestion 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 OpenQuestion graph.