View source for 5hcq


==Crystal structure of antimicrobial peptide Oncocin d15-19 bound to the Thermus thermophilus 70S ribosome==
<StructureSection load='5hcq' size='340' side='right'caption='[[5hcq]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5hcq]] is a 20 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermus_thermophilus_HB8 Thermus thermophilus HB8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5HCQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5HCQ FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.801&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=4SU:4-THIOURIDINE-5-MONOPHOSPHATE'>4SU</scene>, <scene name='pdbligand=5MC:5-METHYLCYTIDINE-5-MONOPHOSPHATE'>5MC</scene>, <scene name='pdbligand=5MU:5-METHYLURIDINE+5-MONOPHOSPHATE'>5MU</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PSU:PSEUDOURIDINE-5-MONOPHOSPHATE'>PSU</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5hcq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5hcq OCA], [https://pdbe.org/5hcq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5hcq RCSB], [https://www.ebi.ac.uk/pdbsum/5hcq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5hcq ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RL28_THET8 RL28_THET8] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
With bacterial resistance becoming a serious threat to global public health, antimicrobial peptides (AMPs) have become a promising area of focus in antibiotic research. AMPs are derived from a diverse range of species, from prokaryotes to humans, with a mechanism of action that often involves disruption of the bacterial cell membrane. Proline-rich antimicrobial peptides (PrAMPs) are instead actively transported inside the bacterial cell where they bind and inactivate specific targets. Recently, it was reported that some PrAMPs, such as Bac71 -35, oncocins and apidaecins, bind and inactivate the bacterial ribosome. Here we report the crystal structures of Bac71 -35, Pyrrhocoricin, Metalnikowin and two oncocin derivatives, bound to the Thermus thermophilus 70S ribosome. Each of the PrAMPs blocks the peptide exit tunnel of the ribosome by simultaneously occupying three well characterized antibiotic-binding sites and interferes with the initiation step of translation, thereby revealing a common mechanism of action used by these PrAMPs to inactivate protein synthesis. Our study expands the repertoire of PrAMPs and provides a framework for designing new-generation therapeutics.

Structures of proline-rich peptides bound to the ribosome reveal a common mechanism of protein synthesis inhibition.,Gagnon MG, Roy RN, Lomakin IB, Florin T, Mankin AS, Steitz TA Nucleic Acids Res. 2016 Mar 18;44(5):2439-50. doi: 10.1093/nar/gkw018. Epub 2016 , Jan 24. PMID:26809677<ref>PMID:26809677</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5hcq" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ribosomal protein THX 3D structures|Ribosomal protein THX 3D structures]]
*[[Ribosome 3D structures|Ribosome 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Thermus thermophilus HB8]]
[[Category: Florin T]]
[[Category: Gagnon MG]]
[[Category: Lomakin IB]]
[[Category: Mankin AS]]
[[Category: Roy RN]]
[[Category: Steitz TA]]