Evidence map›Paper›PMID 10400573›Full record

ArticleJournal of bacteriology1999

A novel Sinorhizobium meliloti operon encodes an alpha-glucosidase and a periplasmic-binding-protein-dependent transport system for alpha-glucosides.

L B Willis, G C Walker

Open access · bronzeAbstract read
In one paragraph

Article in Journal of bacteriology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.4field-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

20 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. Applied and environmental microbiology · 2021
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  12. Review
  13. Mapping the Sinorhizobium meliloti 1021 solute-binding protein-dependent transportome.Proceedings of the National Academy of Sciences of the United States of America · 2006
    Article
  14. Article
  15. Article
  16. Article
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  19. Article
  20. The Rhodobacter capsulatus genome.Photosynthesis research · 2001
    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

2 authors at 1 institution in 1 country.

L B WillisDepartment of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
G C Walker
Massachusetts Institute of Technology · US

Funding

MOLEULAR GENETICS OF RHIZOBIUM PLASMIDSR01GM031030 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI WALKER, GRAHAM C · 1985 to 2020
$8.6M
NIGMS NIH HHS GM31030NIGMS NIH HHS R01 GM031030
6 · The paper itself

Abstract

The most abundant carbon source transported into legume root nodules is photosynthetically produced sucrose, yet the importance of its metabolism by rhizobia in planta is not yet known. To identify genes involved in sucrose uptake and hydrolysis, we screened a Sinorhizobium meliloti genomic library and discovered a segment of S. meliloti DNA which allows Ralstonia eutropha to grow on the alpha-glucosides sucrose, maltose, and trehalose. Tn5 mutagenesis localized the required genes to a 6.8-kb region containing five open reading frames which were named agl, for alpha-glucoside utilization. Four of these (aglE, aglF, aglG, and aglK) appear to encode a periplasmic-binding-protein-dependent sugar transport system, and one (aglA) appears to encode an alpha-glucosidase with homology to family 13 of glycosyl hydrolases. Cosmid-borne agl genes permit uptake of radiolabeled sucrose into R. eutropha cells. Analysis of the properties of agl mutants suggests that S. meliloti possesses at least one additional alpha-glucosidase as well as a lower-affinity transport system for alpha-glucosides. It is possible that the Fix+ phenotype of agl mutants on alfalfa is due to these additional functions. Loci found by DNA sequencing to be adjacent to aglEFGAK include a probable regulatory gene (aglR), zwf and edd, which encode the first two enzymes of the Entner-Doudoroff pathway, pgl, which shows homology to a gene encoding a putative phosphogluconolactonase, and a novel Rhizobium-specific repeat element.

Indexed as

Operonalpha-GlucosidasesBacterial ProteinsBase SequenceBiological Transport, ActiveCarrier ProteinsChromosome MappingCosmidsCupriavidus necatorDisaccharidesDNA Transposable ElementsGenes, BacterialGlucosidesMolecular Sequence DataMutagenesisPeriplasmalpha-GlucosidasesBacterial ProteinsCarrier ProteinsDisaccharidesDNA Transposable ElementsGlucosidesSucrose

Identifiers

PMID10400573
PMCPMC93917
OpenAlexW2116643046

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.