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==Solution Structure of Oxytetracycline Acyl Carrier Protein==
==Solution Structure of Oxytetracycline Acyl Carrier Protein==
<StructureSection load='1nq4' size='340' side='right'caption='[[1nq4]], [[NMR_Ensembles_of_Models | 28 NMR models]]' scene=''>
<StructureSection load='1nq4' size='340' side='right'caption='[[1nq4]]' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1nq4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/As_4.1438 As 4.1438]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NQ4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1NQ4 FirstGlance]. <br>
<table><tr><td colspan='2'>[[1nq4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptomyces_rimosus Streptomyces rimosus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NQ4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1NQ4 FirstGlance]. <br>
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">otcY1-3 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1927 AS 4.1438])</td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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=1nq4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nq4 OCA], [https://pdbe.org/1nq4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1nq4 RCSB], [https://www.ebi.ac.uk/pdbsum/1nq4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1nq4 ProSAT]</span></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=1nq4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nq4 OCA], [https://pdbe.org/1nq4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1nq4 RCSB], [https://www.ebi.ac.uk/pdbsum/1nq4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1nq4 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/ACPX_STRRM ACPX_STRRM]] Acyl carrier protein.  
[https://www.uniprot.org/uniprot/ACPX_STRRM ACPX_STRRM] Acyl carrier protein.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1nq4 ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1nq4 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Type II polyketide synthases (PKSs) utilize a dedicated and essential acyl carrier protein (ACP) in the biosynthesis of a specific polyketide product. As part of our ongoing studies into the mechanisms and control of polyketide biosynthesis, we report the second structure of a polyketide synthase ACP. In this work, multidimensional, heteronuclear NMR was employed to investigate the structure and dynamics of the ACP involved in the biosynthesis of the commonly prescribed polyketide antibiotic, oxytetracycline (otc). An ensemble of 28 structures of the 95 amino acid otc ACP (9916Da) was computed by simulated annealing with the inclusion of 1132 experimental restraints. Atomic RMSDs about the mean structure for all 28 models is 0.66 A for backbone atoms, 1.15 A for all heavy atoms (both values calculated for the folded part of the protein (residues 3-80)), and 0.41 A for backbone atoms within secondary structure. Otc ACP adopts the typical right-handed, four-helix fold of currently known ACPs but with the addition of a 13-residue flexible C-terminus. A comparison of the global folds of all structurally characterized ACPs is described, illustrating that PKS ACPs show clear differences as well as similarities to FAS ACPs. (15)N relaxation experiments for the protein backbone also reveal that the long loop between helices I and II is flexible and helix II, a proposed site of protein-protein interactions, shows conformational exchange. The helices of the ACP form a rigid scaffold for the protein, but these are interspersed with an unusual proportion of flexible linker regions.
Solution structure and dynamics of oxytetracycline polyketide synthase acyl carrier protein from Streptomyces rimosus.,Findlow SC, Winsor C, Simpson TJ, Crosby J, Crump MP Biochemistry. 2003 Jul 22;42(28):8423-33. PMID:12859187<ref>PMID:12859187</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1nq4" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: As 4 1438]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Crosby, J]]
[[Category: Streptomyces rimosus]]
[[Category: Crump, M P]]
[[Category: Crosby J]]
[[Category: Findlow, S C]]
[[Category: Crump MP]]
[[Category: Simpson, T J]]
[[Category: Findlow SC]]
[[Category: Winsor, C]]
[[Category: Simpson TJ]]
[[Category: Acp]]
[[Category: Winsor C]]
[[Category: Biosynthetic protein]]
[[Category: Dynamic]]
[[Category: Oxytetracycline]]
[[Category: Polyketide synthase]]
[[Category: Solution structure]]
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