3opd

From Proteopedia

(Difference between revisions)

Current revision

Crystal Structure of the N-terminal domain of an HSP90 from Trypanosoma Brucei, Tb10.26.1080 in the presence of a benzamide derivative

Structural highlights

3opd is a 3 chain structure with sequence from Trypanosoma brucei brucei. 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

HSP83_TRYBB Molecular chaperone that promotes the maturation, structural maintenance and proper regulation of specific target proteins involved for instance in cell cycle control and signal transduction. Undergoes a functional cycle that is linked to its ATPase activity. This cycle probably induces conformational changes in the client proteins, thereby causing their activation. Interacts dynamically with various co-chaperones that modulate its substrate recognition, ATPase cycle and chaperone function (By similarity).

Publication Abstract from PubMed

Human African trypanosomiasis is a neglected parasitic disease that is fatal if untreated. The current drugs available to eliminate the causative agent Trypanosoma brucei have multiple liabilities, including toxicity, increasing problems due to treatment failure and limited efficacy. There are two approaches to discover novel antimicrobial drugs--whole-cell screening and target-based discovery. In the latter case, there is a need to identify and validate novel drug targets in Trypanosoma parasites. The heat shock proteins (Hsp), while best known as cancer targets with a number of drug candidates in clinical development, are a family of emerging targets for infectious diseases. In this paper, we report the exploration of T. brucei Hsp83--a homolog of human Hsp90--as a drug target using multiple biophysical and biochemical techniques. Our approach included the characterization of the chemical sensitivity of the parasitic chaperone against a library of known Hsp90 inhibitors by means of differential scanning fluorimetry (DSF). Several compounds identified by this screening procedure were further studied using isothermal titration calorimetry (ITC) and X-ray crystallography, as well as tested in parasite growth inhibitions assays. These experiments led us to the identification of a benzamide derivative compound capable of interacting with TbHsp83 more strongly than with its human homologs and structural rationalization of this selectivity. The results highlight the opportunities created by subtle structural differences to develop new series of compounds to selectively target the Trypanosoma brucei chaperone and effectively kill the sleeping sickness parasite.

Exploring the Trypanosoma brucei Hsp83 potential as a target for structure guided drug design.,Pizarro JC, Hills T, Senisterra G, Wernimont AK, Mackenzie C, Norcross NR, Ferguson MA, Wyatt PG, Gilbert IH, Hui R PLoS Negl Trop Dis. 2013 Oct 17;7(10):e2492. doi: 10.1371/journal.pntd.0002492., eCollection 2013. PMID:24147171^[1]

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

References

↑ Pizarro JC, Hills T, Senisterra G, Wernimont AK, Mackenzie C, Norcross NR, Ferguson MA, Wyatt PG, Gilbert IH, Hui R. Exploring the Trypanosoma brucei Hsp83 potential as a target for structure guided drug design. PLoS Negl Trop Dis. 2013 Oct 17;7(10):e2492. doi: 10.1371/journal.pntd.0002492., eCollection 2013. PMID:24147171 doi:http://dx.doi.org/10.1371/journal.pntd.0002492

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/3opd"

@@ Line 5: / Line 5: @@
 <table><tr><td colspan='2'>[[3opd]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Trypanosoma_brucei_brucei Trypanosoma brucei brucei]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OPD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3OPD 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=HIE:4-[6,6-DIMETHYL-4-OXO-3-(TRIFLUOROMETHYL)-4,5,6,7-TETRAHYDRO-1H-INDAZOL-1-YL]-2-[(CIS-4-HYDROXYCYCLOHEXYL)AMINO]BENZAMIDE'>HIE</scene></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=E0G:4-[6,6-dimethyl-4-oxidanylidene-3-(trifluoromethyl)-5,7-dihydroindazol-1-yl]-2-[(4-oxidanylcyclohexyl)amino]benzamide'>E0G</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=3opd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3opd OCA], [https://pdbe.org/3opd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3opd RCSB], [https://www.ebi.ac.uk/pdbsum/3opd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3opd ProSAT]</span></td></tr>
 </table>

3opd

From Proteopedia

Current revision

Crystal Structure of the N-terminal domain of an HSP90 from Trypanosoma Brucei, Tb10.26.1080 in the presence of a benzamide derivative

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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