1ouw
From Proteopedia
(Difference between revisions)
| Line 9: | Line 9: | ||
</table> | </table> | ||
== Function == | == Function == | ||
| - | [https://www.uniprot.org/uniprot/LECC_CALSE LECC_CALSE] Mannose-binding lectin (PubMed: | + | [https://www.uniprot.org/uniprot/LECC_CALSE LECC_CALSE] Mannose-binding lectin (PubMed:14561768, PubMed:18266762, PubMed:26971576, PubMed:28973127, PubMed:9111143). Preferentially binds mannose at concentrations ranging between 5 and 25 mM, but binds also glucose. Has a marked preference for methylated sugar derivatives, such as alpha-MeMan and alpha-MeGlc, at concentration down to 5 mM (PubMed:14561768). Binds to N-glycans, but not to glycolipid-type or other type of glycans (PubMed:28973127). Binds N-linked high-mannose-type glycans (PubMed:18266762, PubMed:28973127). Has a preference for smaller (Man(2)-Man(6)) high-mannose-type glycans to larger (Man(7)-Man(9)) ones. Recognizes both alpha1-6 extended and alpha1-3 extended monoantennary glycans. The addition of alpha1-2Man to the Man-alpha1-3Man-beta branch results in a significant loss of affinity, but beta1-2GlcNAc has some affinity. Has less affinity for biantennary glycans (PubMed:18266762). However, affinity is significant for the biantennary complex-type N-glycans with bisecting GlcNAc (PubMed:18266762, PubMed:26971576, PubMed:28973127). No affinity is observed for tri- and tetra-antennary glycans (PubMed:18266762). Binds bisected glycans of the mouse brain. Selectively binds to bisecting N-glycans which are in back-fold conformation, and does not favor a glycan with an extend conformation (PubMed:26971576). Has hemagglutinating activity against rabbit erythrocytes at 0.3 ug/ml and against trypsin-treated human erythrocytes at 5 ug/ml. Has mitogenic activity in murine cells (PubMed:9111143).<ref>PMID:14561768</ref> <ref>PMID:18266762</ref> <ref>PMID:26971576</ref> <ref>PMID:28973127</ref> <ref>PMID:9111143</ref> |
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
| Line 15: | Line 15: | ||
<jmolCheckbox> | <jmolCheckbox> | ||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ou/1ouw_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ou/1ouw_consurf.spt"</scriptWhenChecked> | ||
| - | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/ | + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> |
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
</jmolCheckbox> | </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=1ouw 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=1ouw ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The high number of quaternary structures observed for lectins highlights the important role of these oligomeric assemblies during carbohydrate recognition events. Although a large diversity in the mode of association of lectin subunits is frequently observed, the oligomeric assemblies of plant lectins display small variations within a single family. The crystal structure of the mannose-binding jacalin-related lectin from Calystegia sepium (Calsepa) has been determined at 1.37-A resolution. Calsepa exhibits the same beta-prism fold as identified previously for other members of the family, but the shape and the hydrophobic character of its carbohydrate-binding site is unlike that of other members, consistent with surface plasmon resonance analysis showing a preference for methylated sugars. Calsepa reveals a novel dimeric assembly markedly dissimilar to those described earlier for Heltuba and jacalin but mimics the canonical 12-stranded beta-sandwich dimer found in legume lectins. The present structure exemplifies the adaptability of the beta-prism building block in the evolution of plant lectins and highlights the biological role of these quaternary structures for carbohydrate recognition. | ||
| + | |||
| + | The crystal structure of the Calystegia sepium agglutinin reveals a novel quaternary arrangement of lectin subunits with a beta-prism fold.,Bourne Y, Roig-Zamboni V, Barre A, Peumans WJ, Astoul CH, Van Damme EJ, Rouge P J Biol Chem. 2004 Jan 2;279(1):527-33. Epub 2003 Oct 15. PMID:14561768<ref>PMID:14561768</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 1ouw" style="background-color:#fffaf0;"></div> | ||
==See Also== | ==See Also== | ||
Current revision
Crystal structure of Calystegia sepium agglutinin
| |||||||||||
