View source for 6zar


==As-isolated copper nitrite reductase from Bradyrhizobium sp. ORS 375 (two-domain) at 1.1 A resolution (unrestrained, full matrix refinement by SHELX)==
<StructureSection load='6zar' size='340' side='right'caption='[[6zar]], [[Resolution|resolution]] 1.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6zar]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bradyrhizobium_sp._ORS_375 Bradyrhizobium sp. ORS 375]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6ZAR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6ZAR 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]] 1.1&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CU:COPPER+(II)+ION'>CU</scene>, <scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=6zar FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6zar OCA], [https://pdbe.org/6zar PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6zar RCSB], [https://www.ebi.ac.uk/pdbsum/6zar PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6zar ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/H0SLX7_BRAS3 H0SLX7_BRAS3] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Copper-containing nitrite reductases (CuNiRs), encoded by nirK gene, are found in all kingdoms of life with only 5% of CuNiR denitrifiers having two or more copies of nirK Recently, we have identified two copies of nirK genes in several alpha-proteobacteria of the order Rhizobiales including Bradyrhizobium sp. ORS 375, encoding a four-domain heme-CuNiR and the usual two-domain CuNiR (Br (2D)NiR). Compared with two of the best-studied two-domain CuNiRs represented by the blue (AxNiR) and green (AcNiR) subclasses, Br (2D)NiR, a blue CuNiR, shows a substantially lower catalytic efficiency despite a sequence identity of ~70%. Advanced synchrotron radiation and x-ray free-electron laser are used to obtain the most accurate (atomic resolution with unrestrained SHELX refinement) and damage-free (free from radiation-induced chemistry) structures, in as-isolated, substrate-bound, and product-bound states. This combination has shed light on the protonation states of essential catalytic residues, additional reaction intermediates, and how catalytic efficiency is modulated.

An unprecedented insight into the catalytic mechanism of copper nitrite reductase from atomic-resolution and damage-free structures.,Rose SL, Antonyuk SV, Sasaki D, Yamashita K, Hirata K, Ueno G, Ago H, Eady RR, Tosha T, Yamamoto M, Hasnain SS Sci Adv. 2021 Jan 1;7(1):eabd8523. doi: 10.1126/sciadv.abd8523. Print 2021 Jan. PMID:33523860<ref>PMID:33523860</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6zar" style="background-color:#fffaf0;"></div>

==See Also==
*[[Nitrite reductase 3D structures|Nitrite reductase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Bradyrhizobium sp. ORS 375]]
[[Category: Large Structures]]
[[Category: Ago H]]
[[Category: Antonyuk SV]]
[[Category: Eady RR]]
[[Category: Hasnain SS]]
[[Category: Hirata K]]
[[Category: Rose SL]]
[[Category: Sasaki D]]
[[Category: Tosha T]]
[[Category: Ueno G]]
[[Category: Yamamoto M]]
[[Category: Yamashita K]]