View source for 7kyp


==PsaBC from Streptococcus pneumoniae in complex with Fab==
<StructureSection load='7kyp' size='340' side='right'caption='[[7kyp]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[7kyp]] is a 16 chain structure with sequence from [https://en.wikipedia.org/wiki/Streptococcus_pneumoniae_D39 Streptococcus pneumoniae D39]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7KYP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7KYP 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]] 2.9&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MA4:CYCLOHEXYL-HEXYL-BETA-D-MALTOSIDE'>MA4</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</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=7kyp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7kyp OCA], [https://pdbe.org/7kyp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7kyp RCSB], [https://www.ebi.ac.uk/pdbsum/7kyp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7kyp ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/A0A0H2ZNF3_STRP2 A0A0H2ZNF3_STRP2] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Metal ions are essential for all forms of life. In prokaryotes, ATP-binding cassette (ABC) permeases serve as the primary import pathway for many micronutrients including the first-row transition metal manganese. However, the structural features of ionic metal transporting ABC permeases have remained undefined. Here, we present the crystal structure of the manganese transporter PsaBC from Streptococcus pneumoniae in an open-inward conformation. The type II transporter has a tightly closed transmembrane channel due to "extracellular gating" residues that prevent water permeation or ion reflux. Below these residues, the channel contains a hitherto unreported metal coordination site, which is essential for manganese translocation. Mutagenesis of the extracellular gate perturbs manganese uptake, while coordination site mutagenesis abolishes import. These structural features are highly conserved in metal-specific ABC transporters and are represented throughout the kingdoms of life. Collectively, our results define the structure of PsaBC and reveal the features required for divalent cation transport.

The structural basis of bacterial manganese import.,Neville SL, Sjohamn J, Watts JA, MacDermott-Opeskin H, Fairweather SJ, Ganio K, Carey Hulyer A, McGrath AP, Hayes AJ, Malcolm TR, Davies MR, Nomura N, Iwata S, O'Mara ML, Maher MJ, McDevitt CA Sci Adv. 2021 Aug 6;7(32):eabg3980. doi: 10.1126/sciadv.abg3980. Print 2021 Aug. PMID:34362732<ref>PMID:34362732</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 7kyp" style="background-color:#fffaf0;"></div>

==See Also==
*[[ABC transporter 3D structures|ABC transporter 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Streptococcus pneumoniae D39]]
[[Category: Maher MJ]]
[[Category: Sjohamn J]]