Evidence map›Paper›PMID 21239503›Full record

ArticleThe Journal of biological chemistry2011

A novel 3-hydroxyproline (3Hyp)-rich motif marks the triple-helical C terminus of tendon type I collagen.

David R Eyre, MaryAnn Weis, David M Hudson, Jiann-Jiu Wu, Lammy Kim

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
3.4field-weighted citation impact, top 7% 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

30 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. The Impact of Ageing on Fibrillar Collagens.Sub-cellular biochemistry · 2026
    Review
  3. Loss of the long form of Plod2 phenocopies contractures of Bruck syndrome-osteogenesis imperfecta.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2024
    Article
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  15. Article
  16. Genome-wide analysis identifies differential promoter methylation of Leprel2, Foxf1, Mmp25, Igfbp6, and Peg12 in murine tendinopathy.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2017
    Article
  17. Article
  18. Article
  19. Osteogenesis imperfecta.Lancet (London, England) · 2016
    Review
  20. Article
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 1 institution in 1 country.

David R EyreFrom the Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington 98195-6500. Electronic address: deyre@u.washington.edu.
MaryAnn WeisFrom the Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington 98195-6500.
David M HudsonFrom the Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington 98195-6500.
Jiann-Jiu WuFrom the Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington 98195-6500.
Lammy KimFrom the Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, Washington 98195-6500.
University of Washington · US

Funding

Project 3: Collagen post-translational modification and cross-linking in OIP01HD070394 · NICHD · BAYLOR COLLEGE OF MEDICINE · PI LEE, BRENDAN · 2011 to 2020
$13.4M
Collagen Cross-linking in Skeletal Aging and DiseaseR37AR037318 · NIAMS · UNIVERSITY OF WASHINGTON · PI EYRE, DAVID R · 2010 to 2019
$3.4M
PATHOLOGY OF INBORN SKELETAL DISEASESR01AR037318 · NIAMS · UNIVERSITY OF WASHINGTON · PI EYRE, DAVID R · 1986 to 2009
$3.4M
Collagens of Cartilage and the Intervertebral DiscR01AR036794 · NIAMS · UNIVERSITY OF WASHINGTON · PI EYRE, DAVID R · 1986 to 2014
$3.3M
NIAMS NIH HHS AR37318NIAMS NIH HHS AR37694NIAMS NIH HHS R01 AR036794NIAMS NIH HHS R01 AR037318NIAMS NIH HHS R37 AR037318NICHD NIH HHS P01 HD070394
6 · The paper itself

Abstract

Because of its unique physical and chemical properties, rat tail tendon collagen has long been favored for crystallographic and biochemical studies of fibril structure. In studies of the distribution of 3-hydroxyproline in type I collagen of rat bone, skin, and tail tendon by mass spectrometry, the repeating sequences of Gly-Pro-Pro (GPP) triplets at the C terminus of α1(I) and α2(I) chains were shown to be heavily 3-hydroxylated in tendon but not in skin and bone. By isolating the tryptic peptides and subjecting them to Edman sequence analysis, the presence of repeating 3-hydroxyprolines in consecutive GPP triplets adjacent to 4-hydroxyproline was confirmed as a unique feature of the tendon collagen. A 1960s study by Piez et al. (Piez, K. A., Eigner, E. A., and Lewis, M. S. (1963) Biochemistry 2, 58-66) in which they compared the amino acid compositions of rat skin and tail tendon type I collagen chains indeed showed 3-4 residues of 3Hyp in tendon α1(I) and α2(I) chains but only one 3Hyp residue in skin α1(I) and none in α2(I). The present work therefore confirms this difference and localizes the additional 3Hyp to the GPP repeat at the C terminus of the triple-helix. We speculate on the significance in terms of a potential function in contributing to the unique assembly mechanism and molecular packing in tendon collagen fibrils and on mechanisms that could regulate 3-hydroxylation at this novel substrate site in a tissue-specific manner.

Indexed as

Amino Acid MotifsAnimalsCollagen Type IHydroxylationHydroxyprolineMass SpectrometryProtein Structure, QuaternaryRatsRats, Sprague-DawleySkinTendonsCollagen Type IHydroxyproline

Identifiers

PMID21239503
PMCPMC3048660
OpenAlexW2102650057

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.