期刊
JOURNAL OF BACTERIOLOGY
卷 186, 期 2, 页码 588-592出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/JB.186.2.588-592.2004
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资金
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM049319] Funding Source: NIH RePORTER
- NIGMS NIH HHS [R01-GM49319, R01 GM049319] Funding Source: Medline
Leucine concentration jumps (applied by photolysis of inert derivatives) triggered swim or tumble responses in Escherichia coli mutants lacking Tsr or Tar, respectively. Wild-type E. coli bacteria were attracted in spatial assays when the initial leucine concentration difference was 5 to 120 muM but were repulsed when it was over 0.5 mM. Their responses to concentration jumps confirmed earlier deductions regarding biphasic excitation.
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