View source for 4fpw


==Crystal Structure of CalU16 from Micromonospora echinospora. Northeast Structural Genomics Consortium Target MiR12.==
<StructureSection load='4fpw' size='340' side='right'caption='[[4fpw]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4fpw]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Micromonospora_echinospora Micromonospora echinospora]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FPW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FPW 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]] 2.5&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</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=4fpw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fpw OCA], [https://pdbe.org/4fpw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fpw RCSB], [https://www.ebi.ac.uk/pdbsum/4fpw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fpw ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/Q8KNE9_MICEC Q8KNE9_MICEC] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Calicheamicin gamma1I (1) is an enediyne antitumor compound produced by Micromonospora echinospora spp. calichensis, and its biosynthetic gene cluster has been previously reported. Despite extensive analysis and biochemical study, several genes in the biosynthetic gene cluster of 1 remain functionally unassigned. Using a structural genomics approach and biochemical characterization, two proteins encoded by genes from the 1 biosynthetic gene cluster assigned as "unknowns", CalU16 and CalU19, were characterized. Structure analysis revealed that they possess the STeroidogenic Acute Regulatory protein related lipid Transfer (START) domain known mainly to bind and transport lipids and previously identified as the structural signature of the enediyne self-resistance protein CalC. Subsequent study revealed calU16 and calU19 to confer resistance to 1, and reminiscent of the prototype CalC, both CalU16 and CalU19 were cleaved by 1 in vitro. Through site-directed mutagenesis and mass spectrometry, we identified the site of cleavage in each protein and characterized their function in conferring resistance against 1. This report emphasizes the importance of structural genomics as a powerful tool for the functional annotation of unknown proteins.

Structure-Guided Functional Characterization of Enediyne Self-Sacrifice Resistance Proteins, CalU16 and CalU19.,Elshahawi SI, Ramelot TA, Seetharaman J, Chen J, Singh S, Yang Y, Pederson K, Kharel MK, Xiao R, Lew S, Yennamalli RM, Miller MD, Wang F, Tong L, Montelione GT, Kennedy MA, Bingman CA, Zhu H, Phillips GN Jr, Thorson JS ACS Chem Biol. 2014 Aug 13. PMID:25079510<ref>PMID:25079510</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4fpw" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Micromonospora echinospora]]
[[Category: Acton TB]]
[[Category: Everett JK]]
[[Category: Hunt JF]]
[[Category: Janjua H]]
[[Category: Kennedy MA]]
[[Category: Lew S]]
[[Category: Montelione GT]]
[[Category: Phillips Jr GN]]
[[Category: Seetharaman J]]
[[Category: Tong L]]
[[Category: Xiao R]]