Evidence map›Paper›PMID 19674976›Full record

ArticleJournal of lipid research2010

Mechanism of LDL binding and release probed by structure-based mutagenesis of the LDL receptor.

Sha Huang, Lisa Henry, Yiu Kee Ho, Henry J Pownall, Gabby Rudenko

Open access · hybridAbstract read
In one paragraph

Article in Journal of lipid research, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

35 citing papers in PubMed, 54 citations in OpenAlex.

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  17. Lipids in Children and Links to Adult Vascular Disease.The Clinical biochemist. Reviews · 2018
    Review
  18. Site-specificThe Journal of biological chemistry · 2018
    Article
  19. Article
  20. PCSK9 as a therapeutic target for cardiovascular disease.Experimental and therapeutic medicine · 2017
    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 3 institutions in 1 country.

Sha HuangLife Sciences Institute, University of Michigan, Ann Arbor, Michigan, USA.
Lisa Henry
Yiu Kee Ho
Henry J Pownall
Gabby Rudenko
Southwestern Medical CenterUniversity of Michigan–Ann Arbor · USBaylor College of Medicine · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The LDL receptor (LDL-R) mediates cholesterol metabolism in humans by binding and internalizing cholesterol transported by LDL. Several different molecular mechanisms have been proposed for the binding of LDL to LDL-R at neutral plasma pH and for its release at acidic endosomal pH. The crystal structure of LDL-R at acidic pH shows that the receptor folds back on itself in a closed form, obscuring parts of the ligand binding domain with the epidermal growth factor (EGF)-precursor homology domain. We have used a structure-based site-directed mutagenesis approach to examine 12 residues in the extracellular domain of LDL-R for their effect on LDL binding and release. Our studies show that the interface between the ligand binding domain and the EGF-precursor homology domain seen at acidic pH buries residues mediating both LDL binding and release. Our results are consistent with an alternative model of LDL-R whereby multiple modules of the extracellular domain interact with LDL at neutral pH, concurrently positioning key residues so that at acidic pH the LDL-R:LDL interactions become unfavorable, triggering release. After LDL release, the closed form of LDL-R may target its return to the cell surface.

Indexed as

Mutagenesis, Site-DirectedCrystallography, X-RayEpidermal Growth FactorHumansHydrogen-Ion ConcentrationLipoproteins, LDLModels, MolecularMutationProtein BindingProtein ConformationReceptors, LDLStructure-Activity RelationshipEpidermal Growth FactorLipoproteins, LDLReceptors, LDL

Identifiers

PMID19674976
PMCPMC2803231
OpenAlexW2033414520

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.