1pyv: Difference between revisions

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-[[Image:1pyv.gif|left|200px]]<br /><applet load="1pyv" size="450" color="white" frame="true" align="right" spinBox="true"
-caption="1pyv" />
-'''NMR solution structure of the mitochondrial F1b presequence peptide from Nicotiana plumbaginifolia'''<br />
-==Overview==
+==NMR solution structure of the mitochondrial F1b presequence peptide from Nicotiana plumbaginifolia==
-We have isolated, characterized and determined the three-dimensional NMR, solution structure of the presequence of ATPsynthase F1beta subunit from, Nicotiana plumbaginifolia. A general method for purification of, presequences is presented. The method is based on overexpression of a, mutant precursor containing a methionine residue introduced at the, processing site, followed by CNBr-cleavage and purification of the, presequence on a cation-exchange column. The F1beta presequence, 53 amino, acid residues long, retained its native properties as evidenced by, inhibition of in vitro mitochondrial import and processing at micromolar, concentrations. CD spectroscopy revealed that the F1beta presequence, formed an alpha-helical structure in membrane mimetic environments such as, SDS and DPC micelles (approximately 50% alpha-helix), and in acidic, phospholipid bicelles (approximately 60% alpha-helix). The NMR solution, structure of the F1beta presequence in SDS micelles was determined on the, basis of 518 distance and 21 torsion angle constraints. The structure was, found to contain two helices, an N-terminal amphipathic alpha-helix, (residues 4-15) and a C-terminal alpha-helix (residues 43-53), separated, by a largely unstructured 27 residue long internal domain. The N-terminal, amphipathic alpha-helix forms the putative Tom20 receptor binding site, whereas the C-terminal alpha-helix is located upstream of the, mitochondrial processing peptidase cleavage site.
+<StructureSection load='1pyv' size='340' side='right'caption='[[1pyv]]' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1pyv]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Nicotiana_plumbaginifolia Nicotiana plumbaginifolia]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1PYV OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1PYV FirstGlance]. <br>
+</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=1pyv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1pyv OCA], [https://pdbe.org/1pyv PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1pyv RCSB], [https://www.ebi.ac.uk/pdbsum/1pyv PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1pyv ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/ATPBM_NICPL ATPBM_NICPL] Mitochondrial membrane ATP synthase (F(1)F(0) ATP synthase or Complex V) produces ATP from ADP in the presence of a proton gradient across the membrane which is generated by electron transport complexes of the respiratory chain. F-type ATPases consist of two structural domains, F(1) - containing the extramembraneous catalytic core, and F(0) - containing the membrane proton channel, linked together by a central stalk and a peripheral stalk. During catalysis, ATP synthesis in the catalytic domain of F(1) is coupled via a rotary mechanism of the central stalk subunits to proton translocation. Subunits alpha and beta form the catalytic core in F(1). Rotation of the central stalk against the surrounding alpha(3)beta(3) subunits leads to hydrolysis of ATP in three separate catalytic sites on the beta subunits.
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+We have isolated, characterized and determined the three-dimensional NMR solution structure of the presequence of ATPsynthase F1beta subunit from Nicotiana plumbaginifolia. A general method for purification of presequences is presented. The method is based on overexpression of a mutant precursor containing a methionine residue introduced at the processing site, followed by CNBr-cleavage and purification of the presequence on a cation-exchange column. The F1beta presequence, 53 amino acid residues long, retained its native properties as evidenced by inhibition of in vitro mitochondrial import and processing at micromolar concentrations. CD spectroscopy revealed that the F1beta presequence formed an alpha-helical structure in membrane mimetic environments such as SDS and DPC micelles (approximately 50% alpha-helix), and in acidic phospholipid bicelles (approximately 60% alpha-helix). The NMR solution structure of the F1beta presequence in SDS micelles was determined on the basis of 518 distance and 21 torsion angle constraints. The structure was found to contain two helices, an N-terminal amphipathic alpha-helix (residues 4-15) and a C-terminal alpha-helix (residues 43-53), separated by a largely unstructured 27 residue long internal domain. The N-terminal amphipathic alpha-helix forms the putative Tom20 receptor binding site, whereas the C-terminal alpha-helix is located upstream of the mitochondrial processing peptidase cleavage site.
-==About this Structure==
+NMR solution structure of the mitochondrial F1beta presequence from Nicotiana plumbaginifolia.,Moberg P, Nilsson S, Stahl A, Eriksson AC, Glaser E, Maler L J Mol Biol. 2004 Mar 5;336(5):1129-40. PMID:15037074<ref>PMID:15037074</ref>
-PYV is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Nicotiana_plumbaginifolia Nicotiana plumbaginifolia]. Active as [http://en.wikipedia.org/wiki/H(+)-transporting_two-sector_ATPase H(+)-transporting two-sector ATPase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.3.14 3.6.3.14] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1PYV OCA].
-==Reference==
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-NMR solution structure of the mitochondrial F1beta presequence from Nicotiana plumbaginifolia., Moberg P, Nilsson S, Stahl A, Eriksson AC, Glaser E, Maler L, J Mol Biol. 2004 Mar 5;336(5):1129-40. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15037074 15037074]
+</div>
-[[Category: H(+)-transporting two-sector ATPase]]
+<div class="pdbe-citations 1pyv" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[ATPase 3D structures|ATPase 3D structures]]
+== References ==
+<references/>
+__TOC__
+</StructureSection>
+[[Category: Large Structures]]
 [[Category: Nicotiana plumbaginifolia]]
-[[Category: Single protein]]
+[[Category: Eriksson AC]]
-[[Category: Eriksson, A.C.]]
+[[Category: Glaser E]]
-[[Category: Glaser, E.]]
+[[Category: Maler L]]
-[[Category: Maler, L.]]
+[[Category: Moberg P]]
-[[Category: Moberg, P.]]
+[[Category: Nilsson S]]
-[[Category: Nilsson, S.]]
+[[Category: Stahl A]]
-[[Category: Stahl, A.]]
-[[Category: hydrolase]]
-''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Wed Nov 21 00:14:38 2007''