Evidence map›Paper›PMID 26489654›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2015

An intrinsic mechanism of secreted protein aging and turnover.

Won Ho Yang, Peter V Aziz, Douglas M Heithoff, Michael J Mahan, Jeffrey W Smith, Jamey D Marth

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 1 pooled it
–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

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

67 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Compositional and topological determinants of a physiological Ashwell-Morell receptor ligand.Proceedings of the National Academy of Sciences of the United States of America · 2025
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  18. Neuraminidase inhibition improves endothelial function in diabetic mice.American journal of physiology. Heart and circulatory physiology · 2023
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  20. Article

7 more citing papers are in PubMed but not listed here.

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.

Won Ho YangCenter for Nanomedicine, University of California, Santa Barbara, CA 93106; Sanford-Burnham-Prebys Medical Discovery Institute, La Jolla, CA 92037;
Peter V AzizCenter for Nanomedicine, University of California, Santa Barbara, CA 93106; Sanford-Burnham-Prebys Medical Discovery Institute, La Jolla, CA 92037;
Douglas M HeithoffDepartment of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA 93106.
Michael J MahanDepartment of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA 93106.
Jeffrey W SmithSanford-Burnham-Prebys Medical Discovery Institute, La Jolla, CA 92037;
Jamey D MarthCenter for Nanomedicine, University of California, Santa Barbara, CA 93106; Sanford-Burnham-Prebys Medical Discovery Institute, La Jolla, CA 92037; Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA 93106 jmarth@sbpdiscovery.org.

Funding

GLYCOSYLTRANSFERASE FUNCTION IN DEVELOPMENT AND DISEASER01DK048247 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI JAMEY MARTH · 1994 to 2026
$9.4M
Glycoprotein Remodeling in the Vasculopathy and Coagulopathy of SepsisR01HL125352 · NHLBI · UNIVERSITY OF CALIFORNIA SANTA BARBARA · PI MARTH, JAMEY, NIZET, VICTOR · 2014 to 2018
$3.6M
Hepatic Lectin Receptors in Glycoprotein HomeostasisR01GM100192 · NIGMS · SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE · PI MARTH, JAMEY · 2012 to 2015
$1.5M
NHLBI NIH HHS HL125352NHLBI NIH HHS R01 HL125352NIDDK NIH HHS DK14842NIDDK NIH HHS R01 DK048247NIGMS NIH HHS GM100192NIGMS NIH HHS R01 GM100192
6 · The paper itself

Abstract

The composition and functions of the secreted proteome are controlled by the life spans of different proteins. However, unlike intracellular protein fate, intrinsic factors determining secreted protein aging and turnover have not been identified and characterized. Almost all secreted proteins are posttranslationally modified with the covalent attachment of N-glycans. We have discovered an intrinsic mechanism of secreted protein aging and turnover linked to the stepwise elimination of saccharides attached to the termini of N-glycans. Endogenous glycosidases, including neuraminidase 1 (Neu1), neuraminidase 3 (Neu3), beta-galactosidase 1 (Glb1), and hexosaminidase B (HexB), possess hydrolytic activities that temporally remodel N-glycan structures, progressively exposing different saccharides with increased protein age. Subsequently, endocytic lectins with distinct binding specificities, including the Ashwell-Morell receptor, integrin αM, and macrophage mannose receptor, are engaged in N-glycan ligand recognition and the turnover of secreted proteins. Glycosidase inhibition and lectin deficiencies increased protein life spans and abundance, and the basal rate of N-glycan remodeling varied among distinct proteins, accounting for differences in their life spans. This intrinsic multifactorial mechanism of secreted protein aging and turnover contributes to health and the outcomes of disease.

Indexed as

GlycosylationPolysaccharidesProtein Processing, Post-TranslationalProteinsPolysaccharidesProteinsglycosidaseglycosylationhomeostasislectinprotein

Identifiers

PMID26489654
PMCPMC4640737

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.