1pp5

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[[Image:1pp5.png|left|200px]]
 
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{{STRUCTURE_1pp5| PDB=1pp5 | SCENE= }}
{{STRUCTURE_1pp5| PDB=1pp5 | SCENE= }}
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===Structure of Antibacterial Peptide Microcin J25: a 21-Residue Lariat Protoknot===
===Structure of Antibacterial Peptide Microcin J25: a 21-Residue Lariat Protoknot===
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{{ABSTRACT_PUBMED_14531661}}
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==Function==
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[[http://www.uniprot.org/uniprot/MCJA_ECOLI MCJA_ECOLI]] Peptide antibiotic that functions through inhibition of the bacterial DNA-dependent RNA polymerase (RNAP). May inhibit transcription by binding in RNAP secondary channel and blocking nucleotide substrates access to the catalytic center. Exhibits potent bacteriocidal activity against a range of Enterobacteriaceae, including several pathogenic E.coli, Salmonella and Shigella strains. Also acts on the cytoplasmic membrane of Salmonella newport, producing alteration of membrane permeability and disruption of the subsequent gradient dissipation, which inhibits several processes essential for cell viability, such as oxygen consumption. Induces bacterial filamentation in susceptible cells in a non-SOS-dependent way, but this phenotype may result from impaired transcription of genes coding for cell division proteins.<ref>PMID:11731133</ref> <ref>PMID:11443089</ref> <ref>PMID:12401787</ref>
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{{ABSTRACT_PUBMED_14531661}}
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==About this Structure==
==About this Structure==
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==Reference==
==Reference==
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<ref group="xtra">PMID:014531661</ref><references group="xtra"/>
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<ref group="xtra">PMID:014531661</ref><references group="xtra"/><references/>
[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
[[Category: Bayro, M J.]]
[[Category: Bayro, M J.]]

Revision as of 10:34, 16 April 2014

Template:STRUCTURE 1pp5

Contents

Structure of Antibacterial Peptide Microcin J25: a 21-Residue Lariat Protoknot

Template:ABSTRACT PUBMED 14531661

Function

[MCJA_ECOLI] Peptide antibiotic that functions through inhibition of the bacterial DNA-dependent RNA polymerase (RNAP). May inhibit transcription by binding in RNAP secondary channel and blocking nucleotide substrates access to the catalytic center. Exhibits potent bacteriocidal activity against a range of Enterobacteriaceae, including several pathogenic E.coli, Salmonella and Shigella strains. Also acts on the cytoplasmic membrane of Salmonella newport, producing alteration of membrane permeability and disruption of the subsequent gradient dissipation, which inhibits several processes essential for cell viability, such as oxygen consumption. Induces bacterial filamentation in susceptible cells in a non-SOS-dependent way, but this phenotype may result from impaired transcription of genes coding for cell division proteins.[1] [2] [3]

About this Structure

1pp5 is a 1 chain structure with sequence from Escherichia coli. Full experimental information is available from OCA.

Reference

  • Bayro MJ, Mukhopadhyay J, Swapna GV, Huang JY, Ma LC, Sineva E, Dawson PE, Montelione GT, Ebright RH. Structure of antibacterial peptide microcin J25: a 21-residue lariat protoknot. J Am Chem Soc. 2003 Oct 15;125(41):12382-3. PMID:14531661 doi:10.1021/ja036677e
  1. ↑ Rintoul MR, de Arcuri BF, Salomon RA, Farias RN, Morero RD. The antibacterial action of microcin J25: evidence for disruption of cytoplasmic membrane energization in Salmonella newport. FEMS Microbiol Lett. 2001 Nov 13;204(2):265-70. PMID:11731133
  2. ↑ Delgado MA, Rintoul MR, Farias RN, Salomon RA. Escherichia coli RNA polymerase is the target of the cyclopeptide antibiotic microcin J25. J Bacteriol. 2001 Aug;183(15):4543-50. PMID:11443089 doi:http://dx.doi.org/10.1128/JB.183.15.4543-4550.2001
  3. ↑ Yuzenkova J, Delgado M, Nechaev S, Savalia D, Epshtein V, Artsimovitch I, Mooney RA, Landick R, Farias RN, Salomon R, Severinov K. Mutations of bacterial RNA polymerase leading to resistance to microcin j25. J Biol Chem. 2002 Dec 27;277(52):50867-75. Epub 2002 Oct 24. PMID:12401787 doi:http://dx.doi.org/10.1074/jbc.M209425200

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