Difference between revisions of "Part:BBa K4169028"
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__NOTOC__
 
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<partinfo>BBa_K4169028</partinfo>
 
<partinfo>BBa_K4169028</partinfo>
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===HepT: a RNase like toxin===
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===Pcyd: A promoter open in aerobic conditions===
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<p>HepT is a toxin that can be effectively inhibited the growth of bacteria.The HepT toxin could function as an RNase with a RX4-6H active motif and cleave mRNA to inhibit cell growth. Complete with HepT (HZAU-China 2021:BBa_K3733010) was used in this study.</p>
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<p>This is an aerobically initiated promoter that initiates transcription of subsequent sequences under microaerobic and aerobic conditions. The mechanism is based on the fact that Fnr takes over the promoter sequence under anaerobic conditions, competes with RNA polymerase for binding sites, and thus prevents the transcription of subsequent sequences. However, under microaerobic and aerobic conditions, Fnr protein does not bind to the sequence, and thus can continue the subsequent transcription.
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</p>
  
 
===Usage and Biology===
 
===Usage and Biology===
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<p>As an RNase enzyme, HepT can degrade mRNA at the transcriptional level, which ultimately leads to cell death
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<p>This is a promoter sequence that initiates transcription of subsequent gene sequences under aerobic conditions and is part of the operon structure of cydAB. Under anaerobic conditions, the Fnr protein will bind to a part of the promoter sequence, impeding RNA polymerase binding, playing a competitive role, and the downstream gene sequence cannot be transcribed. However, under microoxygen conditions, AcrA protein binds to this promoter and recruits RNA polymerase to bind to the promoter, thereby normally initiating downstream transcription. Under aerobic conditions, RNA polymerase normally binds to the promoter. So this is a promoter sequence that can be transcribed normally under aerobic conditions.
 
</p>
 
</p>
  
 
===Sequence and Features===
 
===Sequence and Features===
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<partinfo>BBa_K4169006 SequenceAndFeatures</partinfo>
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<partinfo>BBa_K4169028 SequenceAndFeatures</partinfo>
  
  
  
 
<h3>References</h3>
 
<h3>References</h3>
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<p>Hoynes-O'Connor A, Hinman K, Kirchner L, Moon TS. De novo design of heat-repressible RNA thermosensors in E. coli.<i> Nucleic Acids Res.</i> 2015 Jul 13;43(12):6166-79.</p>
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<p>Cotter PA, Melville SB, Albrecht JA, Gunsalus RP. Aerobic regulation of cytochrome d oxidase (cydAB) operon expression in Escherichia coli: roles of Fnr and ArcA in repression and activation.<i>Mol Microbiol.</i> 1997 Aug;25(3):605-15.</p>
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<partinfo>BBa_K4169028 short</partinfo>
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This is an aerobically initiated promoter that initiates transcription of subsequent sequences under microaerobic and aerobic conditions. The mechanism is based on the fact that Fnr takes over the promoter sequence under anaerobic conditions, competes with RNA polymerase for binding sites, and thus prevents the transcription of subsequent sequences. However, under microaerobic and aerobic conditions, Fnr protein does not bind to the sequence, and thus can continue the subsequent transcription.
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<!-- Add more about the biology of this part here
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===Usage and Biology===
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<p>
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This is a promoter sequence that initiates transcription of subsequent gene sequences under aerobic conditions and is part of the operon structure of cydAB. Under anaerobic conditions, the Fnr protein will bind to a part of the promoter sequence, impeding RNA polymerase binding, playing a competitive role, and the downstream gene sequence cannot be transcribed. However, under microoxygen conditions, AcrA protein binds to this promoter and recruits RNA polymerase to bind to the promoter, thereby normally initiating downstream transcription. Under aerobic conditions, RNA polymerase normally binds to the promoter. So this is a promoter sequence that can be transcribed normally under aerobic conditions.
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</p>
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===Sequence and Features===
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<partinfo>BBa_K4169028 SequenceAndFeatures</partinfo>
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===Functional Parameters===
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<partinfo>BBa_K4169028 parameters</partinfo>
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Revision as of 03:25, 11 October 2022


BBa_K4169028

Pcyd: A promoter open in aerobic conditions

This is an aerobically initiated promoter that initiates transcription of subsequent sequences under microaerobic and aerobic conditions. The mechanism is based on the fact that Fnr takes over the promoter sequence under anaerobic conditions, competes with RNA polymerase for binding sites, and thus prevents the transcription of subsequent sequences. However, under microaerobic and aerobic conditions, Fnr protein does not bind to the sequence, and thus can continue the subsequent transcription.

Usage and Biology

This is a promoter sequence that initiates transcription of subsequent gene sequences under aerobic conditions and is part of the operon structure of cydAB. Under anaerobic conditions, the Fnr protein will bind to a part of the promoter sequence, impeding RNA polymerase binding, playing a competitive role, and the downstream gene sequence cannot be transcribed. However, under microoxygen conditions, AcrA protein binds to this promoter and recruits RNA polymerase to bind to the promoter, thereby normally initiating downstream transcription. Under aerobic conditions, RNA polymerase normally binds to the promoter. So this is a promoter sequence that can be transcribed normally under aerobic conditions.

Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    COMPATIBLE WITH RFC[1000]


References

Cotter PA, Melville SB, Albrecht JA, Gunsalus RP. Aerobic regulation of cytochrome d oxidase (cydAB) operon expression in Escherichia coli: roles of Fnr and ArcA in repression and activation.Mol Microbiol. 1997 Aug;25(3):605-15.