View source for 7lao


==Crystal structure of aminoglycoside acetyltransferase AAC(3)-IIb==
<StructureSection load='7lao' size='340' side='right'caption='[[7lao]], [[Resolution|resolution]] 1.92&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7lao]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Serratia_marcescens Serratia marcescens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7LAO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7LAO 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]] 1.92&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <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'>[https://proteopedia.org/fgij/fg.htm?mol=7lao FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7lao OCA], [https://pdbe.org/7lao PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7lao RCSB], [https://www.ebi.ac.uk/pdbsum/7lao PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7lao ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/AAC3_SERMA AAC3_SERMA] Resistance to antibiotics containing the 2-deoxy-streptamine ring including gentamicin, kanamycin, tobramycin, neomycin and apramycin.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The environmental microbiome harbors a vast repertoire of antibiotic resistance genes (ARGs) which can serve as evolutionary predecessors for ARGs found in pathogenic bacteria, or can be directly mobilized to pathogens in the presence of selection pressures. Thus, ARGs from benign environmental bacteria are an important resource for understanding clinically relevant resistance. Here, we conduct a comprehensive functional analysis of the Antibiotic_NAT family of aminoglycoside acetyltransferases. We determined a pan-family antibiogram of 21 Antibiotic_NAT enzymes, including 8 derived from clinical isolates and 13 from environmental metagenomic samples. We find that environment-derived representatives confer high-level, broad-spectrum resistance, including against the atypical aminoglycoside apramycin, and that a metagenome-derived gene likely is ancestral to an aac(3) gene found in clinical isolates. Through crystallographic analysis, we rationalize the molecular basis for diversification of substrate specificity across the family. This work provides critical data on the molecular mechanism underpinning resistance to established and emergent aminoglycoside antibiotics and broadens our understanding of ARGs in the environment.

Structural and molecular rationale for the diversification of resistance mediated by the Antibiotic_NAT family.,Stogios PJ, Bordeleau E, Xu Z, Skarina T, Evdokimova E, Chou S, Diorio-Toth L, D'Souza AW, Patel S, Dantas G, Wright GD, Savchenko A Commun Biol. 2022 Mar 25;5(1):263. doi: 10.1038/s42003-022-03219-w. PMID:35338238<ref>PMID:35338238</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7lao" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Serratia marcescens]]
[[Category: Di Leo R]]
[[Category: Evdokimova E]]
[[Category: Joachimiak A]]
[[Category: Osipiuk J]]
[[Category: Satchell KJF]]
[[Category: Savchenko A]]
[[Category: Stogios PJ]]