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5xnx

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Revision as of 06:55, 14 October 2020

Crystallographic structure of the enzymatically active N-terminal domain of the Rel protein from Mycobacterium tuberculosis

Structural highlights

5xnx is a 4 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[RELA_MYCTU] In eubacteria ppGpp (guanosine 3'-diphosphate 5-' diphosphate) is a mediator of the stringent response that coordinates a variety of cellular activities in response to changes in nutritional abundance. This enzyme catalyzes both the formation of pppGpp, which is then hydrolyzed to form ppGpp, as well as the hydrolysis of ppGpp. RelA is probably a key factor in the pathogenesis of M.tuberculosis as it regulates the intracellular concentrations of (p)ppGpp.^[1] ^[2]

Publication Abstract from PubMed

Modulation of intracellular guanosine 3',5'-bispyrophosphate ((p)ppGpp) level, the effector of the stringent response, is crucial for survival as well as optimal growth of prokaryotes and, thus, for bacterial pathogenesis and dormancy. In Mycobacterium tuberculosis (Mtb), (p)ppGpp synthesis and degradation are carried out by the bifunctional enzyme MtRel, which consists of 738 residues, including an N-terminal hydrolase- and synthetase-domain (N-terminal domain or NTD) and a C-terminus with a ribosome-binding site. Here, we present the first crystallographic structure of the enzymatically active MtRel NTD determined at 3.7 A resolution. The structure provides insights into the residues of MtRel NTD responsible for nucleotide binding. Small-angle X-ray scattering experiments were performed to investigate the dimeric state of the MtRel NTD and possible substrate-dependent structural alterations.

Crystallographic and solution structure of the N-terminal domain of the Rel protein from Mycobacterium tuberculosis.,Singal B, Balakrishna AM, Nartey W, Manimekalai MSS, Jeyakanthan J, Gruber G FEBS Lett. 2017 Aug;591(15):2323-2337. doi: 10.1002/1873-3468.12739. Epub 2017, Jul 25. PMID:28672070^[3]

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

References

↑ Avarbock D, Salem J, Li LS, Wang ZM, Rubin H. Cloning and characterization of a bifunctional RelA/SpoT homologue from Mycobacterium tuberculosis. Gene. 1999 Jun 11;233(1-2):261-9. PMID:10375643
↑ Primm TP, Andersen SJ, Mizrahi V, Avarbock D, Rubin H, Barry CE 3rd. The stringent response of Mycobacterium tuberculosis is required for long-term survival. J Bacteriol. 2000 Sep;182(17):4889-98. PMID:10940033
↑ Singal B, Balakrishna AM, Nartey W, Manimekalai MSS, Jeyakanthan J, Gruber G. Crystallographic and solution structure of the N-terminal domain of the Rel protein from Mycobacterium tuberculosis. FEBS Lett. 2017 Aug;591(15):2323-2337. doi: 10.1002/1873-3468.12739. Epub 2017, Jul 25. PMID:28672070 doi:http://dx.doi.org/10.1002/1873-3468.12739

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/5xnx"

@@ Line 1: / Line 1: @@
 ==Crystallographic structure of the enzymatically active N-terminal domain of the Rel protein from Mycobacterium tuberculosis==
-<StructureSection load='5xnx' size='340' side='right' caption='[[5xnx]], [[Resolution|resolution]] 3.70&Aring;' scene=''>
+<StructureSection load='5xnx' size='340' side='right'caption='[[5xnx]], [[Resolution|resolution]] 3.70&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5xnx]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5XNX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5XNX FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5xnx]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5XNX OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5XNX FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></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=5xnx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5xnx OCA], [http://pdbe.org/5xnx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5xnx RCSB], [http://www.ebi.ac.uk/pdbsum/5xnx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5xnx ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5xnx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5xnx OCA], [http://pdbe.org/5xnx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5xnx RCSB], [http://www.ebi.ac.uk/pdbsum/5xnx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5xnx ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 22: / Line 22: @@
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Balakrishna, A M]]
 [[Category: Gruber, G]]

5xnx

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Revision as of 06:55, 14 October 2020

Crystallographic structure of the enzymatically active N-terminal domain of the Rel protein from Mycobacterium tuberculosis

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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