Difference between revisions of "Part:BBa K3332101"

 
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<partinfo>BBa_K3332101 short</partinfo>
 
<partinfo>BBa_K3332101 short</partinfo>
  
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Subunits of phosphonate ABC transporter, permease protein phnE, from S.meliloti 1021. We use K823004 to construct a new part that can transport glyphosate to cytoplasm.
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subunits of phosphonate ABC transporter, permease protein phnE, from ''S.meliloti'' 1021. We use K823004 to construct a new part that can transport glyphosate to cytoplasm.
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===Biology===
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Phn system is a gene cluster for organophosphorus transport and degradation in many microorganisms. ''Enterobacterales'' use phnHIJK genes to encode C-P lyase, PhnJ protein is an essential subunit that can crack C-P bond. The 21th arginine was mutated to methionine.
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===Usage===
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We ligased the J23100-B0034-Mut21_phnJ-B0015 (<partinfo>BBa_K3332069</partinfo>) and J23100-B0034-phnE<sub>1</sub>-B0034-phnE<sub>2</sub>(<partinfo>BBa_K3332067</partinfo>) on the expression vector pSB1C3 by standard assembly. Then the ligation mixture was transformed into ''E. coli'' DH5α & ''E. coli'' BL21(DE3), enabled the ''E. coli'' to degrade glyphosate at higher efficiency.
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===Characterization===
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'''Enzyme activity'''
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;We use Negative Control, experiment groups phnEE and Mut21_phnJ-phnEE to analyze if Mut21_phnJ enhances the degradation of glyphosate by the chassis bacteria by our detection system. Mut21_phnJ gene lowers the degradation rate of ''E.coli'' BL21(DE3) about 16.4%, indicate the mutant has higher binding ability to PhnHIK but lower degradation ability compare to endogenous PhnJ.
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The result is shown in Fig.2.
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;（Experiment groups in Fig.2:
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Negative Control: J23100-B0034_pSB1C3
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;phnE1E2: J23100-B0034-phnE1-B0034-phnE2_pSB1C3,
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;phnJ-phnE1E2: J23100-B0034-phnJ-B0015-J23100-B0034-phnE1-B0034-phnE2_pSB1C3,
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Mut21-phnJ-phnE1E2: J23100-B0034-phnJ_mutR21M-B0015- J23100-B0034-phnE1-B0034-phnE2_pSB1C3
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Mut1640-phnJ-phnE1E2: J23100-B0034-phnJ_mutT16S&R40Y-B0015-J23100-B0034-phnE1-B0034-phnE2_pSB1C3
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RNAi system-phnJ-phnO-phnE1E2: J23101-OmpA 5'UTR-phnF 0.97-Hfq binding sequence-J23101- OmpA 5'UTR-phnJ 0.69-Hfq binding sequence- BBa_J61048-J23100-B0034-phnJ-B0015-J23100-phnO-B0015-J23100-B0034-phnE1-B0034-phnE2_pSB1C3).
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<table><tr><th>[[File:T--XMU-China2020--BBa K3332024 3.png|thumb|500px|Fig.2 Relationship between concentration of glyphosate and culture time.]]</th><th></table>
  
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===Usage and Biology===
 
  
 
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Latest revision as of 01:26, 28 October 2020


J23100-RBS-phnJ_mut21-B0015-J23100-RBS-phnE1-RBS-phnE2

        Subunits of phosphonate ABC transporter, permease protein phnE, from S.meliloti 1021. We use K823004 to construct a new part that can transport glyphosate to cytoplasm.


Biology

        Phn system is a gene cluster for organophosphorus transport and degradation in many microorganisms. Enterobacterales use phnHIJK genes to encode C-P lyase, PhnJ protein is an essential subunit that can crack C-P bond. The 21th arginine was mutated to methionine.


Usage

        We ligased the J23100-B0034-Mut21_phnJ-B0015 (BBa_K3332069) and J23100-B0034-phnE1-B0034-phnE2(BBa_K3332067) on the expression vector pSB1C3 by standard assembly. Then the ligation mixture was transformed into E. coli DH5α & E. coli BL21(DE3), enabled the E. coli to degrade glyphosate at higher efficiency.

Characterization

Enzyme activity

        We use Negative Control, experiment groups phnEE and Mut21_phnJ-phnEE to analyze if Mut21_phnJ enhances the degradation of glyphosate by the chassis bacteria by our detection system. Mut21_phnJ gene lowers the degradation rate of E.coli BL21(DE3) about 16.4%, indicate the mutant has higher binding ability to PhnHIK but lower degradation ability compare to endogenous PhnJ.

        The result is shown in Fig.2.

        （Experiment groups in Fig.2:

        Negative Control: J23100-B0034_pSB1C3

        phnE1E2: J23100-B0034-phnE1-B0034-phnE2_pSB1C3,

        phnJ-phnE1E2: J23100-B0034-phnJ-B0015-J23100-B0034-phnE1-B0034-phnE2_pSB1C3,

        Mut21-phnJ-phnE1E2: J23100-B0034-phnJ_mutR21M-B0015- J23100-B0034-phnE1-B0034-phnE2_pSB1C3

        Mut1640-phnJ-phnE1E2: J23100-B0034-phnJ_mutT16S&R40Y-B0015-J23100-B0034-phnE1-B0034-phnE2_pSB1C3

       RNAi system-phnJ-phnO-phnE1E2: J23101-OmpA 5'UTR-phnF 0.97-Hfq binding sequence-J23101- OmpA 5'UTR-phnJ 0.69-Hfq binding sequence- BBa_J61048-J23100-B0034-phnJ-B0015-J23100-phnO-B0015-J23100-B0034-phnE1-B0034-phnE2_pSB1C3).

Fig.2 Relationship between concentration of glyphosate and culture time.


Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    INCOMPATIBLE WITH RFC[12]
    Illegal NheI site found at 7
    Illegal NheI site found at 30
    Illegal NheI site found at 1057
    Illegal NheI site found at 2583
    Illegal NheI site found at 2606
  • 21
    INCOMPATIBLE WITH RFC[21]
    Illegal BamHI site found at 3186
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal NgoMIV site found at 3234
    Illegal AgeI site found at 2209
    Illegal AgeI site found at 2905
    Illegal AgeI site found at 3412
  • 1000
    COMPATIBLE WITH RFC[1000]