Evidence map›Paper›PMID 24616093›Full record

ArticleThe Journal of biological chemistry2014

Identification of a novel protein binding motif within the T-synthase for the molecular chaperone Cosmc.

Rajindra P Aryal, Tongzhong Ju, Richard D Cummings

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.2field-weighted citation impact, top 24% 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

14 citing papers in PubMed, 22 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. C1GALT1 in health and disease.Oncology letters · 2021
    Review
  5. Article
  6. Alzheimer's & dementia (New York, N. Y.) · 2020
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. [Association of Cosmc gene mutation with susceptibility to Henoch-Schönlein purpura in children].Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2016
    Article
  12. Glycosyltransferases and non-alcoholic fatty liver disease.World journal of gastroenterology · 2016
    Review
  13. Protein glycosylation in cancer.Annual review of pathology · 2015
    Review
  14. Review
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

3 authors at 1 institution in 1 country.

Rajindra P AryalDepartment of Biochemistry, Emory University School of Medicine, Atlanta, Georgia 30322.
Tongzhong JuDepartment of Biochemistry, Emory University School of Medicine, Atlanta, Georgia 30322. Electronic address: tju@emory.edu.
Richard D CummingsDepartment of Biochemistry, Emory University School of Medicine, Atlanta, Georgia 30322. Electronic address: rdcummi@emory.edu.
Emory University · US

Funding

Cosmc - A Novel Molecular Chaperone Regulating O-GlycansR01GM068559 · NIGMS · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI CUMMINGS, RICHARD D · 2005 to 2009
$1.2M
NIDDK NIH HHS DK0808760NIGMS NIH HHS GM068559NIGMS NIH HHS R01 GM068559
6 · The paper itself

Abstract

Prior studies suggested that the core 1 β3-galactosyltransferase (T-synthase) is a specific client of the endoplasmic reticulum chaperone Cosmc, whose function is required for T-synthase folding, activity, and consequent synthesis of normal O-glycans in all vertebrate cells. To explore whether the T-synthase encodes a specific recognition motif for Cosmc, we used deletion mutagenesis to identify a cryptic linear and relatively hydrophobic peptide in the N-terminal stem region of the T-synthase that is essential for binding to Cosmc (Cosmc binding region within T-synthase, or CBRT). Using this sequence information, we synthesized a peptide containing CBRT and found that it directly interacts with Cosmc and also inhibits Cosmc-assisted in vitro refolding of denatured T-synthase. Moreover, engineered T-synthase carrying mutations within CBRT exhibited diminished binding to Cosmc that resulted in the formation of inactive T-synthase. To confirm the general recognition of CBRT by Cosmc, we performed a domain swap experiment in which we inserted the stem region of the T-synthase into the human β4GalT1 and found that the CBRT element can confer Cosmc binding onto the β4GalT1 chimera. Thus, CBRT is a unique recognition motif for Cosmc to promote its regulation and formation of active T-synthase and represents the first sequence-specific chaperone recognition system in the ER/Golgi required for normal protein O-glycosylation.

Indexed as

Amino Acid SequenceAnimalsBase SequenceDNA PrimersGalactosyltransferasesHumansMolecular ChaperonesMolecular Sequence DataPolymerase Chain ReactionProtein BindingSequence Homology, Amino AcidC1GALT1C1 protein, humanC1GALT1 protein, humanDNA PrimersGalactosyltransferasesMolecular ChaperonesCosmcEndoplasmic Reticulum (ER)GlycobiologyGlycoproteinGlycoprotein BiosynthesisGlycosylationMolecular ChaperoneProtein FoldingT-synthase

Identifiers

PMID24616093
PMCPMC4002073
OpenAlexW1977341975

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.