Evidence map›Paper›PMID 19216553›Full record

ArticleBiochemistry2009

The structure of the cataract-causing P23T mutant of human gammaD-crystallin exhibits distinctive local conformational and dynamic changes.

Jinwon Jung, In-Ja L Byeon, Yongting Wang, Jonathan King, Angela M Gronenborn

Open access · greenAbstract read
In one paragraph

Article in Biochemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
3.0field-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

34 citing papers in PubMed, 62 citations in OpenAlex.

  1. Trial
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  4. A mutatedInternational journal of ophthalmology · 2021
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  17. Evolution of crystallins for a role in the vertebrate eye lens.Protein science : a publication of the Protein Society · 2013
    Review
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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

5 authors at 2 institutions in 1 country.

Jinwon JungDepartment of Structural Biology, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
In-Ja L Byeon
Yongting Wang
Jonathan King
Angela M Gronenborn
University of Pittsburgh · USMassachusetts Institute of Technology · US

Funding

Folding &Misfolding of Parallel Beta-Helix ProteinsR01GM017980 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI KING, JONATHAN ALAN · 1985 to 2009
$4.9M
Human gammaD-Crystallin Folding Misfolding &Fibril FormR01EY015834 · NEI · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI KING, JONATHAN ALAN · 2005 to 2014
$3.5M
BACTERIOPHAGE ASSEMBLY AND ITS GENETIC CONTROLR37GM017980 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI KING, JONATHAN A · 1988 to 1997
–
NEI NIH HHS EY 015834NIGMS NIH HHS GM 17980
6 · The paper itself

Abstract

Crystallins are major proteins of the eye lens and essential for lens transparency. Mutations and aging of crystallins cause cataracts, the predominant cause of blindness in the world. In human gammaD-crystallin, the P23T mutant is associated with congenital cataracts. Until now, no atomic structural information has been available for this variant. Biophysical analyses of this mutant protein have revealed dramatically reduced solubility compared to that of the wild-type protein due to self-association into higher-molecular weight clusters and aggregates that retain a nativelike conformation within the monomers [Pande, A., et al. (2005) Biochemistry 44, 2491-2500]. To elucidate the structure and local conformation around the mutation site, we have determined the solution structure and characterized the protein's dynamic behavior by NMR. Although the global structure is very similar to the X-ray structure of wild-type gammaD-crystallin, pivotal local conformational and dynamic differences are caused by the threonine substitution. In particular, in the P23T mutant, the imidazole ring of His22 switches from the predominant Nepsilon2 tautomer in the wild-type protein to the Ndelta1 tautomer, and an altered motional behavior of the associated region in the protein is observed. The data support structural changes that may initiate aggregation or polymerization by the mutant protein.

Indexed as

MutationCataractCrystallinsgamma-CrystallinsHistidineHumansKineticsModels, MolecularProtein ConformationCRYGD protein, humanCrystallinsgamma-CrystallinsHistidine

Identifiers

PMID19216553
PMCPMC2722838
OpenAlexW2092853815

What OpenQuestion holds

Textmetadata
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.