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1nc3

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Revision as of 09:12, 10 September 2015

Crystal structure of E. coli MTA/AdoHcy nucleosidase complexed with formycin A (FMA)

Structural highlights

1nc3 is a 2 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	1nc1, 1jys
Gene:	MTN OR PFS OR B0159 OR Z0170 OR ECS0163 ("Bacillus coli" Migula 1895)
Activity:	Adenosylhomocysteine nucleosidase, with EC number 3.2.2.9
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[MTNN_ECOLI] Catalyzes the irreversible cleavage of the glycosidic bond in both 5'-methylthioadenosine (MTA) and S-adenosylhomocysteine (SAH/AdoHcy) to adenine and the corresponding thioribose, 5'-methylthioribose and S-ribosylhomocysteine, respectively. Can also use 5'-isobutylthioadenosine, 5'-n-butylthioadenosine, S-adenosyl-D-homocysteine, decarboxylated adenosylhomocysteine, deaminated adenosylhomocysteine and S-2-aza-adenosylhomocysteine as substrates.[HAMAP-Rule:MF_01684]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

5'-Methylthioadenosine/S-adenosylhomocysteine (MTA/AdoHcy) nucleosidase is a key enzyme in a number of critical biological processes in many microbes. This nucleosidase catalyzes the irreversible hydrolysis of the N(9)-C(1') bond of MTA or AdoHcy to form adenine and the corresponding thioribose. The key role of the MTA/AdoHcy nucleosidase in biological methylation, polyamine biosynthesis, methionine recycling, and bacterial quorum sensing has made it an important antimicrobial drug target. The crystal structures of Escherichia coli MTA/AdoHcy nucleosidase complexed with the transition state analog, formycin A (FMA), and the nonhydrolyzable substrate analog, 5'-methylthiotubercidin (MTT) have been solved to 2.2- and 2.0-A resolution, respectively. These are the first MTA/AdoHcy nucleosidase structures to be solved in the presence of inhibitors. These structures clearly identify the residues involved in substrate binding and catalysis in the active site. Comparisons of the inhibitor complexes to the adenine-bound MTA/AdoHcy nucleosidase (Lee, J. E., Cornell, K. A., Riscoe, M. K., and Howell, P. L. (2001) Structure (Camb.) 9, 941-953) structure provide evidence for a ligand-induced conformational change in the active site and the substrate preference of the enzyme. The enzymatic mechanism has been re-examined.

Structure of Escherichia coli 5'-methylthioadenosine/ S-adenosylhomocysteine nucleosidase inhibitor complexes provide insight into the conformational changes required for substrate binding and catalysis.,Lee JE, Cornell KA, Riscoe MK, Howell PL J Biol Chem. 2003 Mar 7;278(10):8761-70. Epub 2002 Dec 20. PMID:12496243^[1]

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

References

↑ Lee JE, Cornell KA, Riscoe MK, Howell PL. Structure of Escherichia coli 5'-methylthioadenosine/ S-adenosylhomocysteine nucleosidase inhibitor complexes provide insight into the conformational changes required for substrate binding and catalysis. J Biol Chem. 2003 Mar 7;278(10):8761-70. Epub 2002 Dec 20. PMID:12496243 doi:10.1074/jbc.M210836200

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1nc3"

@@ Line 2: / Line 2: @@
 <StructureSection load='1nc3' size='340' side='right' caption='[[1nc3]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1nc3]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NC3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1NC3 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1nc3]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NC3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1NC3 FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FMC:(1S)-1-(7-AMINO-1H-PYRAZOLO[4,3-D]PYRIMIDIN-3-YL)-1,4-ANHYDRO-D-RIBITOL'>FMC</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1nc1|1nc1]], [[1jys|1jys]]</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MTN OR PFS OR B0159 OR Z0170 OR ECS0163 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MTN OR PFS OR B0159 OR Z0170 OR ECS0163 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Adenosylhomocysteine_nucleosidase Adenosylhomocysteine nucleosidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.2.9 3.2.2.9] </span></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=1nc3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nc3 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1nc3 RCSB], [http://www.ebi.ac.uk/pdbsum/1nc3 PDBsum]</span></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=1nc3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nc3 OCA], [http://pdbe.org/1nc3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1nc3 RCSB], [http://www.ebi.ac.uk/pdbsum/1nc3 PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 29: / Line 29: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1nc3" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Bacillus coli migula 1895]]
 [[Category: Adenosylhomocysteine nucleosidase]]
-[[Category: Escherichia coli]]
 [[Category: Cornell, K A]]
 [[Category: Howell, P L]]

1nc3

From Proteopedia

Revision as of 09:12, 10 September 2015

Crystal structure of E. coli MTA/AdoHcy nucleosidase complexed with formycin A (FMA)

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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