5wit

From Proteopedia

(Difference between revisions)

Current revision

Crystal structure of the Thermus thermophilus 70S ribosome in complex with pikromycin and bound to mRNA and A-, P- and E-site tRNAs at 2.6A resolution

Structural highlights

5wit is a 20 chain structure with sequence from Thermus thermophilus HB8. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.6Å
Ligands:	, , , , , , , , , , , , , , , , , , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

RL3_THET8 One of the primary rRNA binding proteins, it binds directly near the 3'-end of the 23S rRNA, where it nucleates assembly of the 50S subunit (By similarity).[HAMAP-Rule:MF_01325_B]

Publication Abstract from PubMed

Antibiotics methymycin (MTM) and pikromycin (PKM), co-produced by Streptomyces venezuelae, represent minimalist macrolide protein synthesis inhibitors. Unlike other macrolides, which carry several side chains, a single desosamine sugar is attached to the macrolactone ring of MTM and PKM. In addition, the macrolactone scaffold of MTM is smaller than in other macrolides. The unusual structure of MTM and PKM and their simultaneous secretion by S. venezuelae bring about the possibility that two compounds would bind to distinct ribosomal sites. However, by combining genetic, biochemical and crystallographic studies, we demonstrate that MTM and PKM inhibit translation by binding to overlapping sites in the ribosomal exit tunnel. Strikingly, while MTM and PKM readily arrest the growth of bacteria, approximately 40% of cellular proteins continue to be synthesized even at saturating concentrations of the drugs. Gel electrophoretic analysis shows that compared to other ribosomal antibiotics, MTM and PKM prevent synthesis of a smaller number of cellular polypeptides illustrating a unique mode of action of these antibiotics.

Co-produced natural ketolides methymycin and pikromycin inhibit bacterial growth by preventing synthesis of a limited number of proteins.,Almutairi MM, Svetlov MS, Hansen DA, Khabibullina NF, Klepacki D, Kang HY, Sherman DH, Vazquez-Laslop N, Polikanov YS, Mankin AS Nucleic Acids Res. 2017 Sep 19;45(16):9573-9582. doi: 10.1093/nar/gkx673. PMID:28934499^[1]

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

References

↑ Almutairi MM, Svetlov MS, Hansen DA, Khabibullina NF, Klepacki D, Kang HY, Sherman DH, Vazquez-Laslop N, Polikanov YS, Mankin AS. Co-produced natural ketolides methymycin and pikromycin inhibit bacterial growth by preventing synthesis of a limited number of proteins. Nucleic Acids Res. 2017 Sep 19;45(16):9573-9582. doi: 10.1093/nar/gkx673. PMID:28934499 doi:http://dx.doi.org/10.1093/nar/gkx673

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5wit"

@@ Line 5: / Line 5: @@
 <table><tr><td colspan='2'>[[5wit]] 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=5WIT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5WIT 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]] 2.6&#8491;</td></tr>
-<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0TD:(3S)-3-(METHYLSULFANYL)-L-ASPARTIC+ACID'>0TD</scene>, <scene name='pdbligand=2MA:2-METHYLADENOSINE-5-MONOPHOSPHATE'>2MA</scene>, <scene name='pdbligand=2MG:2N-METHYLGUANOSINE-5-MONOPHOSPHATE'>2MG</scene>, <scene name='pdbligand=2MU:2,5-DIMETHYLURIDINE-5-MONOPHOSPHATE'>2MU</scene>, <scene name='pdbligand=4OC:4N,O2-METHYLCYTIDINE-5-MONOPHOSPHATE'>4OC</scene>, <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=7MG:7N-METHYL-8-HYDROGUANOSINE-5-MONOPHOSPHATE'>7MG</scene>, <scene name='pdbligand=AQJ:(3R,5R,6S,7S,9R,11E,13S,14R)-14-ethyl-13-hydroxy-3,5,7,9,13-pentamethyl-2,4,10-trioxo-1-oxacyclotetradec-11-en-6-yl+3,4,6-trideoxy-3-(dimethylamino)-beta-D-xylo-hexopyranoside'>AQJ</scene>, <scene name='pdbligand=F3N:3-DEOXY-3-(L-PHENYLALANYLAMINO)ADENOSINE+5-(DIHYDROGEN+PHOSPHATE)'>F3N</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=M2G:N2-DIMETHYLGUANOSINE-5-MONOPHOSPHATE'>M2G</scene>, <scene name='pdbligand=MA6:6N-DIMETHYLADENOSINE-5-MONOPHOSHATE'>MA6</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MIA:2-METHYLTHIO-N6-ISOPENTENYL-ADENOSINE-5-MONOPHOSPHATE'>MIA</scene>, <scene name='pdbligand=OMG:O2-METHYLGUANOSINE-5-MONOPHOSPHATE'>OMG</scene>, <scene name='pdbligand=PSU:PSEUDOURIDINE-5-MONOPHOSPHATE'>PSU</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene>, <scene name='pdbligand=UR3:3-METHYLURIDINE-5-MONOPHOSHATE'>UR3</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0TD:(3S)-3-(METHYLSULFANYL)-L-ASPARTIC+ACID'>0TD</scene>, <scene name='pdbligand=2MA:2-METHYLADENOSINE-5-MONOPHOSPHATE'>2MA</scene>, <scene name='pdbligand=2MG:2N-METHYLGUANOSINE-5-MONOPHOSPHATE'>2MG</scene>, <scene name='pdbligand=2MU:2,5-DIMETHYLURIDINE-5-MONOPHOSPHATE'>2MU</scene>, <scene name='pdbligand=4OC:4N,O2-METHYLCYTIDINE-5-MONOPHOSPHATE'>4OC</scene>, <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=7MG:7N-METHYL-8-HYDROGUANOSINE-5-MONOPHOSPHATE'>7MG</scene>, <scene name='pdbligand=AQJ:(3~{R},5~{R},6~{S},7~{S},9~{R},11~{E},13~{S},14~{R})-6-[(2~{S},3~{R},4~{S},6~{R})-4-(dimethylamino)-6-methyl-3-oxidanyl-oxan-2-yl]oxy-14-ethyl-3,5,7,9,13-pentamethyl-13-oxidanyl-1-oxacyclotetradec-11-ene-2,4,10-trione'>AQJ</scene>, <scene name='pdbligand=F3N:3-DEOXY-3-(L-PHENYLALANYLAMINO)ADENOSINE+5-(DIHYDROGEN+PHOSPHATE)'>F3N</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=M2G:N2-DIMETHYLGUANOSINE-5-MONOPHOSPHATE'>M2G</scene>, <scene name='pdbligand=MA6:6N-DIMETHYLADENOSINE-5-MONOPHOSHATE'>MA6</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=MIA:2-METHYLTHIO-N6-ISOPENTENYL-ADENOSINE-5-MONOPHOSPHATE'>MIA</scene>, <scene name='pdbligand=OMG:O2-METHYLGUANOSINE-5-MONOPHOSPHATE'>OMG</scene>, <scene name='pdbligand=PSU:PSEUDOURIDINE-5-MONOPHOSPHATE'>PSU</scene>, <scene name='pdbligand=UR3:3-METHYLURIDINE-5-MONOPHOSHATE'>UR3</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=5wit FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5wit OCA], [https://pdbe.org/5wit PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5wit RCSB], [https://www.ebi.ac.uk/pdbsum/5wit PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5wit ProSAT]</span></td></tr>
 </table>
 == Function ==
-[https://www.uniprot.org/uniprot/RL2_THET8 RL2_THET8] One of the primary rRNA binding proteins. Required for association of the 30S and 50S subunits to form the 70S ribosome, for tRNA binding and peptide bond formation. It has been suggested to have peptidyltransferase activity; this is somewhat controversial (By similarity). Makes several contacts with the 16S rRNA (forming bridge B7b) in the 70S ribosome.[HAMAP-Rule:MF_01320_B]
+[https://www.uniprot.org/uniprot/RL3_THET8 RL3_THET8] One of the primary rRNA binding proteins, it binds directly near the 3'-end of the 23S rRNA, where it nucleates assembly of the 50S subunit (By similarity).[HAMAP-Rule:MF_01325_B]
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==

5wit

From Proteopedia

Current revision

Crystal structure of the Thermus thermophilus 70S ribosome in complex with pikromycin and bound to mRNA and A-, P- and E-site tRNAs at 2.6A resolution

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

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