2g4n
From Proteopedia
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| - | [[Image:2g4n.jpg|left|200px]]<br /><applet load="2g4n" size="350" color="white" frame="true" align="right" spinBox="true" | ||
| - | caption="2g4n, resolution 2.30Å" /> | ||
| - | '''Anomalous substructure of alpha-lactalbumin'''<br /> | ||
| - | == | + | ==Anomalous substructure of alpha-lactalbumin== |
| + | <StructureSection load='2g4n' size='340' side='right'caption='[[2g4n]], [[Resolution|resolution]] 2.30Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[2g4n]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2G4N OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2G4N FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=K:POTASSIUM+ION'>K</scene></td></tr> | ||
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2g4h|2g4h]], [[2g4i|2g4i]], [[2g4j|2g4j]], [[2g4k|2g4k]], [[2g4l|2g4l]], [[2g4m|2g4m]], [[2g4o|2g4o]], [[2g4p|2g4p]], [[2g4q|2g4q]], [[2g4r|2g4r]], [[2g4s|2g4s]], [[2g4t|2g4t]], [[2g4u|2g4u]], [[2g4v|2g4v]], [[2g4w|2g4w]], [[2g4x|2g4x]], [[2g4y|2g4y]], [[2g4z|2g4z]], [[2g51|2g51]], [[2g52|2g52]], [[2g55|2g55]]</div></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=2g4n FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2g4n OCA], [https://pdbe.org/2g4n PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2g4n RCSB], [https://www.ebi.ac.uk/pdbsum/2g4n PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2g4n ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [[https://www.uniprot.org/uniprot/LALBA_BOVIN LALBA_BOVIN]] Regulatory subunit of lactose synthase, changes the substrate specificity of galactosyltransferase in the mammary gland making glucose a good acceptor substrate for this enzyme. This enables LS to synthesize lactose, the major carbohydrate component of milk. In other tissues, galactosyltransferase transfers galactose onto the N-acetylglucosamine of the oligosaccharide chains in glycoproteins. | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/g4/2g4n_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </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=2g4n ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
23 different crystal forms of 19 different biological macromolecules were examined with respect to their anomalously scattering substructures using diffraction data collected at a wavelength of 2.0 A (6.2 keV). In more than 90% of the cases the substructure was found to contain more than just the protein S atoms. The data presented suggest that chloride, sulfate, phosphate or metal ions from the buffer or even from the purification protocol are frequently bound to the protein molecule and that these ions are often overlooked, especially if they are not bound at full occupancy. Thus, in order to fully describe the macromolecule under study, it seems desirable that any structure determination be complemented with a long-wavelength data set. | 23 different crystal forms of 19 different biological macromolecules were examined with respect to their anomalously scattering substructures using diffraction data collected at a wavelength of 2.0 A (6.2 keV). In more than 90% of the cases the substructure was found to contain more than just the protein S atoms. The data presented suggest that chloride, sulfate, phosphate or metal ions from the buffer or even from the purification protocol are frequently bound to the protein molecule and that these ions are often overlooked, especially if they are not bound at full occupancy. Thus, in order to fully describe the macromolecule under study, it seems desirable that any structure determination be complemented with a long-wavelength data set. | ||
| - | + | On the routine use of soft X-rays in macromolecular crystallography. Part IV. Efficient determination of anomalous substructures in biomacromolecules using longer X-ray wavelengths.,Mueller-Dieckmann C, Panjikar S, Schmidt A, Mueller S, Kuper J, Geerlof A, Wilmanns M, Singh RK, Tucker PA, Weiss MS Acta Crystallogr D Biol Crystallogr. 2007 Mar;63(Pt 3):366-80. Epub 2007, Feb 21. PMID:17327674<ref>PMID:17327674</ref> | |
| - | + | ||
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | <div class="pdbe-citations 2g4n" style="background-color:#fffaf0;"></div> | |
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| - | + | ==See Also== | |
| + | *[[Alpha-lactalbumin 3D structures|Alpha-lactalbumin 3D structures]] | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Bos taurus]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Mueller-Dieckmann, C]] | ||
| + | [[Category: Weiss, M S]] | ||
| + | [[Category: Allergen]] | ||
| + | [[Category: Anomalous substructure of alpha-lactalbumin]] | ||
Current revision
Anomalous substructure of alpha-lactalbumin
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