3k0v: Difference between revisions

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-[[Image:3k0v.png|left|200px]]
-{{STRUCTURE_3k0v|  PDB=3k0v  |  SCENE=  }}
+==Removal of sugars and sugars-like molecules from the solution by C-lobe of lactoferrin: Crystal structure of the complex of C-lobe with beta-D-glucopyranosyl-(1->4)-beta-D-galactopyranosyl-(1->4)-alpha-D-glucopyranose at 1.9 A resolution==
+<StructureSection load='3k0v' size='340' side='right'caption='[[3k0v]], [[Resolution|resolution]] 1.91&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[3k0v]] is a 1 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=3K0V OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3K0V 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]] 1.91&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BGC:BETA-D-GLUCOSE'>BGC</scene>, <scene name='pdbligand=CO3:CARBONATE+ION'>CO3</scene>, <scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=GLC:ALPHA-D-GLUCOSE'>GLC</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=3k0v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3k0v OCA], [https://pdbe.org/3k0v PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3k0v RCSB], [https://www.ebi.ac.uk/pdbsum/3k0v PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3k0v ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/TRFL_BOVIN TRFL_BOVIN] Transferrins are iron binding transport proteins which can bind two Fe(3+) ions in association with the binding of an anion, usually bicarbonate.<ref>PMID:8980754</ref> <ref>PMID:15222473</ref>   Lactotransferrin has antimicrobial activity. The most effective inhibitory activity was seen against E.coli and P.aeruginosa.<ref>PMID:8980754</ref> <ref>PMID:15222473</ref>   Lactoferricin B is an antimicrobial peptide. Inhibits the growth of Gram-negative and Gram-positive bacteria.<ref>PMID:8980754</ref> <ref>PMID:15222473</ref>   The lactotransferrin transferrin-like domain 1 functions as a serine protease of the peptidase S60 family that cuts arginine rich regions. This function contributes to the antimicrobial activity.<ref>PMID:8980754</ref> <ref>PMID:15222473</ref>
+== 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/k0/3k0v_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=3k0v ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Bovine lactoferrin has been shown to reduce the levels of glucose in both normal subjects and non-insulin dependent diabetic patients. The binding studies have shown that various sugar molecules interact with lactoferrin indicating the presence of a sugar-binding site in the protein. Structural studies have revealed that the sugar-binding site is located in the C-terminal half (C-lobe) of bilobal lactoferrin. Since the sugar-binding site was part of the C-lobe, it was better to carry out binding and structural studies using C-lobe rather than the full protein molecule. Therefore, C-lobe was prepared by limited proteolysis of lactoferrin with enzyme proteinase K. It was purified to homogeneity for further studies. The addition of C-lobe to human serum showed significant lowering of glucose levels. The binding studies using C-lobe with nine sugars, glucose, galactose, mannose, xylose, maltose, cellobiose, lactose, sucrose and dextrin gave values of binding constants in the range of 10(-4) to 10(-5)M. The structure determinations of the complexes of C-lobe with all the nine sugars showed that all of them interact with C-lobe through the same recognition site involving several hydrogen bonds and van der Waals interactions.
-===Removal of sugars and sugars-like molecules from the solution by C-lobe of lactoferrin: Crystal structure of the complex of C-lobe with beta-D-glucopyranosyl-(1->4)-beta-D-galactopyranosyl-(1->4)-alpha-D-glucopyranose at 1.9 A resolution===
+Specific interactions of C-terminal half (C-lobe) of lactoferrin protein with edible sugars: binding and structural studies with implications on diabetes.,Mir R, Kumar RP, Singh N, Vikram GP, Sinha M, Bhushan A, Kaur P, Srinivasan A, Sharma S, Singh TP Int J Biol Macromol. 2010 Jul 1;47(1):50-9. Epub 2010 Apr 4. PMID:20371371<ref>PMID:20371371</ref>
-{{ABSTRACT_PUBMED_20371371}}
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
-==About this Structure==
+<div class="pdbe-citations 3k0v" style="background-color:#fffaf0;"></div>
-[[3k0v]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3K0V OCA].
 ==See Also==
 *[[Lactoferrin|Lactoferrin]]
+== References ==
-==Reference==
+<references/>
-<ref group="xtra">PMID:020371371</ref><references group="xtra"/>
+__TOC__
+</StructureSection>
 [[Category: Bos taurus]]
-[[Category: Kaur, P.]]
+[[Category: Large Structures]]
-[[Category: Mir, R.]]
+[[Category: Kaur P]]
-[[Category: Sharma, S.]]
+[[Category: Mir R]]
-[[Category: Singh, N.]]
+[[Category: Sharma S]]
-[[Category: Singh, T P.]]
+[[Category: Singh N]]
-[[Category: Sinha, M.]]
+[[Category: Singh TP]]
-[[Category: Vikram, G.]]
+[[Category: Sinha M]]
-[[Category: Antibiotic]]
+[[Category: Vikram G]]
-[[Category: Antimicrobial]]
-[[Category: C-lobe]]
-[[Category: Complex]]
-[[Category: Dextrin]]
-[[Category: Disulfide bond]]
-[[Category: Glycoprotein]]
-[[Category: Hydrolase]]
-[[Category: Ion transport]]
-[[Category: Iron]]
-[[Category: Iron transport]]
-[[Category: Metal-binding]]
-[[Category: Phosphoprotein]]
-[[Category: Protease]]
-[[Category: Secreted]]
-[[Category: Serine protease]]
-[[Category: Transport]]