1syy

<StructureSection load='1syy' size='340' side='right' caption='[[1syy]], [[Resolution|resolution]] 1.70&Aring;' scene=''>

<table><tr><td colspan='2'>[[1syy]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"chlamydozoon_trachomatis"_(busacca_1935)_moshkovski_1945 "chlamydozoon trachomatis" (busacca 1935) moshkovski 1945]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1SYY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1SYY FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=PB:LEAD+(II)+ION'>PB</scene></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">NRDB, CT828 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=813 "Chlamydozoon trachomatis" (Busacca 1935) Moshkovski 1945])</td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Ribonucleoside-diphosphate_reductase Ribonucleoside-diphosphate reductase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.17.4.1 1.17.4.1] </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=1syy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1syy OCA], [http://pdbe.org/1syy PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1syy RCSB], [http://www.ebi.ac.uk/pdbsum/1syy PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1syy ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/RIR2_CHLTR RIR2_CHLTR]] Provides the precursors necessary for DNA synthesis. Catalyzes the biosynthesis of deoxyribonucleotides from the corresponding ribonucleotides (By similarity).

<div style="background-color:#fffaf0;">

== Publication Abstract from PubMed ==

Ribonucleotide reductase (RNR) synthesizes the deoxyribonucleotides for DNA synthesis. The R2 protein of normal class I ribonucleotide reductases contains a diiron site that produces a stable tyrosyl free radical, essential for enzymatic activity. Structural and electron paramagnetic resonance studies of R2 from Chlamydia trachomatis reveal a protein lacking a tyrosyl radical site. Instead, the protein yields an iron-coupled radical upon reconstitution. The coordinating structure of the diiron site is similar to that of diiron oxidases/monoxygenases and supports a role for this radical in the RNR mechanism. The specific ligand pattern in the C. trachomatis R2 metal site characterizes a new group of R2 proteins that so far has been found in eight organisms, three of which are human pathogens.

The radical site in chlamydial ribonucleotide reductase defines a new R2 subclass.,Hogbom M, Stenmark P, Voevodskaya N, McClarty G, Graslund A, Nordlund P Science. 2004 Jul 9;305(5681):245-8. PMID:15247479<ref>PMID:15247479</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

</div>

<div class="pdbe-citations 1syy" style="background-color:#fffaf0;"></div>

*[[Ribonucleotide reductase|Ribonucleotide reductase]]

[[Category: Ribonucleoside-diphosphate reductase]]

[[Category: Graslund, A]]

[[Category: Hogbom, M]]

[[Category: McClarty, G]]

[[Category: Nordlund, P]]

[[Category: Stenmark, P]]

[[Category: Voevodskaya, N]]

[[Category: Replication]]