Difference between revisions of "PMID:4933690"

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(Materials and Methods Used)
(Table edited by Azweifel via TableEdit)
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!|Species!!Taxon ID!!Strain!!Gene (if known)!!OMP!!Phenotype!!Details!!Evidence!!Notes
 
!|Species!!Taxon ID!!Strain!!Gene (if known)!!OMP!!Phenotype!!Details!!Evidence!!Notes
 +
|-
 +
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''Escherichia coli''
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NCBI:83333
 +
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X71-54
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''lacY<sup>UN</sup>''
 +
|
 +
inability to accumulate thiomethylgalactoside
 +
|
 +
Other
 +
|
 +
Intracellular [<sup>14</sup>C]TMG accumulation
 +
|
 +
Other
 +
|
 +
Figure 1- Filter assay
 +
|-
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|
 +
''Escherichia coli''
 +
|
 +
NCBI:83333
 +
|
 +
X71-54
 +
|
 +
''lacY<sup>UN</sup>''
 +
|
 +
increased efflux rate of thiomethylgalactoside (TMG)
 +
|
 +
Other
 +
|
 +
exit rate of [<sup>14</sup>C]TMG was faster than that found for the parent
 +
|
 +
Other
 +
|
 +
Figure 2- Filter assay
 +
|-
 +
|
 +
''Escherichia coli''
 +
|
 +
NCBI:83333
 +
|
 +
X71-54
 +
|
 +
''lacY<sup>UN</sup>''
 +
|
 +
increased rate of transporter substrate uptake
 +
|
 +
Metabolic Activity
 +
|
 +
130% of normal uptake activity (gauged by ONPG entry)
 +
|
 +
Biochemical Assay
 +
|
 +
Table 1- ONPG assay
  
 
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Revision as of 14:57, 13 December 2010

Citation

Wilson, TH, Kusch, M and Kashket, ER (1970) A mutant in Escherichia coli energy-uncoupled for lactose transport: a defect in the lactose-operon.Biochem. Biophys. Res. Commun. 40:1409-14

Abstract

No abstract in PubMed

Links

PubMed

Keywords

Biological Transport, Active; Carbon Isotopes; Cell Membrane; Coliphages; Escherichia coli; Galactose; Glycosides; Lactose; Molecular Biology; Mutation; Nitrobenzenes; Operon; Transduction, Genetic

Main Points of the Paper

Please summarize the main points of the paper.

Materials and Methods Used

  • Parent Strain: X71 (i-z+y+a-, proC-, try-, B1-, F-)
  • Additional Strain: X71-54
  • Additional Strain: Ca77 (lactose-deleted, B1-, Hfr)
  • β-galactosidase assay
  • ONPG uptake assay
  • Thiomethylgalactoside (TMG) transport assay
  • P1 Transduction

Phenotype Annotations

<protect>

Species Taxon ID Strain Gene (if known) OMP Phenotype Details Evidence Notes

Escherichia coli

NCBI:83333

X71-54

lacYUN

inability to accumulate thiomethylgalactoside

Other

Intracellular [14C]TMG accumulation

Other

Figure 1- Filter assay

Escherichia coli

NCBI:83333

X71-54

lacYUN

increased efflux rate of thiomethylgalactoside (TMG)

Other

exit rate of [14C]TMG was faster than that found for the parent

Other

Figure 2- Filter assay

Escherichia coli

NCBI:83333

X71-54

lacYUN

increased rate of transporter substrate uptake

Metabolic Activity

130% of normal uptake activity (gauged by ONPG entry)

Biochemical Assay

Table 1- ONPG assay

</protect>

Notes