6grh

From Proteopedia

(Difference between revisions)

Current revision

E. coli Microcin synthetase McbBCD complex with truncated pro-MccB17 bound

Structural highlights

6grh is a 5 chain structure with sequence from Escherichia coli mg1655. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , , , ,
NonStd Res:
Gene:	mcbA (Escherichia coli MG1655), mcbB (Escherichia coli MG1655), mcbC (Escherichia coli MG1655), mcbD (Escherichia coli MG1655)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[MCBD_ECOLX] Necessary to process the inactive microcin B17 (McbA) precursor into the active peptide. [MCBA_ECOLX] This glycine-rich peptide antibiotic inhibits DNA replication in many enteric bacteria, that leads to induction of the SOS repair system, massive DNA degradation and cell death. B17 inhibits type II topoisomerase by trapping an enzyme - DNA cleavable complex.^[1] [MCBC_ECOLX] Necessary to process the inactive microcin B17 (McbA) precursor into the active peptide. [MCBB_ECOLX] Necessary to process the inactive microcin B17 (McbA) precursor into the active peptide.

Publication Abstract from PubMed

The introduction of azole heterocycles into a peptide backbone is the principal step in the biosynthesis of numerous compounds with therapeutic potential. One of them is microcin B17, a bacterial topoisomerase inhibitor whose activity depends on the conversion of selected serine and cysteine residues of the precursor peptide to oxazoles and thiazoles by the McbBCD synthetase complex. Crystal structures of McbBCD reveal an octameric B4C2D2 complex with two bound substrate peptides. Each McbB dimer clamps the N-terminal recognition sequence, while the C-terminal heterocycle of the modified peptide is trapped in the active site of McbC. The McbD and McbC active sites are distant from each other, which necessitates alternate shuttling of the peptide substrate between them, while remaining tethered to the McbB dimer. An atomic-level view of the azole synthetase is a starting point for deeper understanding and control of biosynthesis of a large group of ribosomally synthesized natural products.

Architecture of Microcin B17 Synthetase: An Octameric Protein Complex Converting a Ribosomally Synthesized Peptide into a DNA Gyrase Poison.,Ghilarov D, Stevenson CEM, Travin DY, Piskunova J, Serebryakova M, Maxwell A, Lawson DM, Severinov K Mol Cell. 2019 Jan 16. pii: S1097-2765(18)31002-5. doi:, 10.1016/j.molcel.2018.11.032. PMID:30661981^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Vizan JL, Hernandez-Chico C, del Castillo I, Moreno F. The peptide antibiotic microcin B17 induces double-strand cleavage of DNA mediated by E. coli DNA gyrase. EMBO J. 1991 Feb;10(2):467-76. PMID:1846808
↑ Ghilarov D, Stevenson CEM, Travin DY, Piskunova J, Serebryakova M, Maxwell A, Lawson DM, Severinov K. Architecture of Microcin B17 Synthetase: An Octameric Protein Complex Converting a Ribosomally Synthesized Peptide into a DNA Gyrase Poison. Mol Cell. 2019 Jan 16. pii: S1097-2765(18)31002-5. doi:, 10.1016/j.molcel.2018.11.032. PMID:30661981 doi:http://dx.doi.org/10.1016/j.molcel.2018.11.032

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/6grh"

@@ Line 1: / Line 1: @@
 ==E. coli Microcin synthetase McbBCD complex with truncated pro-MccB17 bound==
-<StructureSection load='6grh' size='340' side='right' caption='[[6grh]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
+<StructureSection load='6grh' size='340' side='right'  caption='[[6grh]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[6grh]] is a 5 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6GRH OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6GRH FirstGlance]. <br>
+<table><tr><td colspan='2'>[[6grh]] is a 5 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli_mg1655 Escherichia coli mg1655]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6GRH OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6GRH FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=FMN:FLAVIN+MONONUCLEOTIDE'>FMN</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
 <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=OTZ:'>OTZ</scene></td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">mcbA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=511145 Escherichia coli MG1655]), mcbB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=511145 Escherichia coli MG1655]), mcbC ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=511145 Escherichia coli MG1655]), mcbD ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=511145 Escherichia coli MG1655])</td></tr>
 <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6grh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6grh OCA], [http://pdbe.org/6grh PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6grh RCSB], [http://www.ebi.ac.uk/pdbsum/6grh PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6grh ProSAT]</span></td></tr>
 </table>
@@ Line 23: / Line 24: @@
 __TOC__
 </StructureSection>
+[[Category: Escherichia coli mg1655]]
 [[Category: Ghilarov, D]]
 [[Category: Lawson, D M]]

6grh

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Current revision

E. coli Microcin synthetase McbBCD complex with truncated pro-MccB17 bound

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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