Evidence map›Paper›PMID 9548717›Full record

ArticleThe Journal of cell biology1998

A SecY homologue is required for the elaboration of the chloroplast thylakoid membrane and for normal chloroplast gene expression.

L M Roy, A Barkan

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
3.7field-weighted citation impact, top 6% 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

32 citing papers in PubMed, 94 citations in OpenAlex.

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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

2 authors at 1 institution in 1 country.

L M RoyInstitute of Molecular Biology, University of Oregon, Eugene, Oregon 97403, USA.
A Barkan
University of Oregon · US

Funding

NUCLEAR GENES THAT MEDIATE CHLOROPLAST ASSEMBLYR01GM048179 · NIGMS · UNIVERSITY OF OREGON · PI BARKAN, ALICE · 1997 to 2000
$188k
NIGMS NIH HHS R01 GM48179
6 · The paper itself

Abstract

Results of in vitro and genetic studies have provided evidence for four pathways by which proteins are targeted to the chloroplast thylakoid membrane. Although these pathways are initially engaged by distinct substrates and involve some distinct components, an unresolved issue has been whether multiple pathways converge on a common translocation pore in the membrane. A homologue of eubacterial SecY called cpSecY is localized to the thylakoid membrane. Since SecY is a component of a protein-translocating pore in bacteria, cpSecY likely plays an analogous role. To explore the role of cpSecY, we obtained maize mutants with transposon insertions in the corresponding gene. Null cpSecY mutants exhibit a severe loss of thylakoid membrane, differing in this regard from mutants lacking cpSecA. Therefore, cpSecY function is not limited to a translocation step downstream of cpSecA. The phenotype of cpSecY mutants is also much more pleiotropic than that of double mutants in which both the cpSecA- and DeltapH-dependent thylakoid-targeting pathways are disrupted. Therefore, cpSecY function is likely to extend beyond any role it might play in these targeting pathways. CpSecY mutants also exhibit a defect in chloroplast translation, revealing a link between chloroplast membrane biogenesis and chloroplast gene expression.

Indexed as

Arabidopsis ProteinsAmino Acid SequenceBase SequenceChloroplast ProteinsChloroplastsCloning, MolecularDarknessGene DosageGene Expression Regulation, PlantGenes, PlantIntracellular MembranesMembrane ProteinsMolecular Sequence DataMutationPhenotypePlant ProteinsArabidopsis ProteinsChloroplast ProteinsMembrane ProteinsPlant ProteinsRNA, MessengerRNA, PlantRNA, Ribosomal, 16SSCY1 protein, ArabidopsisSEC Translocation Channels

Identifiers

PMID9548717
PMCPMC2148445
OpenAlexW2036671749

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.