1rdj: Difference between revisions

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<StructureSection load='1rdj' size='340' side='right'caption='[[1rdj]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
<StructureSection load='1rdj' size='340' side='right'caption='[[1rdj]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1rdj]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Black_rat Black rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RDJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RDJ FirstGlance]. <br>
<table><tr><td colspan='2'>[[1rdj]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_rattus Rattus rattus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RDJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RDJ 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=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MFB:BETA-L-METHYL-FUCOSE'>MFB</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.8&#8491;</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=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MFB:BETA-L-METHYL-FUCOSE'>MFB</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=1rdj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rdj OCA], [https://pdbe.org/1rdj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rdj RCSB], [https://www.ebi.ac.uk/pdbsum/1rdj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rdj ProSAT]</span></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=1rdj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rdj OCA], [https://pdbe.org/1rdj PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rdj RCSB], [https://www.ebi.ac.uk/pdbsum/1rdj PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rdj ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/MBL2_RAT MBL2_RAT]] Calcium-dependent lectin involved in innate immune defense. Binds mannose, fucose and N-acetylglucosamine on different microorganisms and activates the lectin complement pathway. Binds to late apoptotic cells, as well as to apoptotic blebs and to necrotic cells, but not to early apoptotic cells, facilitating their uptake by macrophages (By similarity).  
[https://www.uniprot.org/uniprot/MBL2_RAT MBL2_RAT] Calcium-dependent lectin involved in innate immune defense. Binds mannose, fucose and N-acetylglucosamine on different microorganisms and activates the lectin complement pathway. Binds to late apoptotic cells, as well as to apoptotic blebs and to necrotic cells, but not to early apoptotic cells, facilitating their uptake by macrophages (By similarity).
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</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=1rdj 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=1rdj ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The structural basis of carbohydrate recognition by rat liver mannose-binding protein (MBP-C) has been explored by determining the three-dimensional structure of the C-type carbohydrate-recognition domain (CRD) of MBP-C using x-ray crystallography. The structure was solved by molecular replacement using rat serum mannose-binding protein (MBP-A) as a search model and was refined to maximum Bragg spacings of 1.7 A. Despite their almost identical folds, the dimeric structures formed by the two MBP CRDs differ dramatically. Complexes of MBP-C with methyl glycosides of mannose, N-acetylglucosamine, and fucose were prepared by soaking MBP-C crystals in solutions containing these sugars. Surprisingly, the pyranose ring of mannose is rotated 180 degrees relative to the orientation observed previously in MBP-A, but the local interactions between sugar and protein are preserved. For each of the bound sugars, vicinal, equatorial hydroxyl groups equivalent to the 3- and 4-OH groups of mannose directly coordinate Ca2+ and form hydrogen bonds with residues also serving as Ca2+ ligands. Few interactions are observed between other parts of the sugar and the protein. A complex formed between free galactose and MBP-C reveals a similar mode of binding, with the anomeric hydroxyl group serving as one of the Ca2+ ligands. A second binding site for mannose has also been observed in one of two copies in the asymmetric unit at a sugar concentration of 1.3 M. These structures explain how MBPs recognize a wide range of monosaccharides and suggest how fine specificity differences between MBP-A and MBP-C may be achieved.
Structural analysis of monosaccharide recognition by rat liver mannose-binding protein.,Ng KK, Drickamer K, Weis WI J Biol Chem. 1996 Jan 12;271(2):663-74. PMID:8557671<ref>PMID:8557671</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1rdj" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Mannose-binding protein|Mannose-binding protein]]
*[[Mannose-binding protein|Mannose-binding protein]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Black rat]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Drickamer, K]]
[[Category: Rattus rattus]]
[[Category: Ng, K K.S]]
[[Category: Drickamer K]]
[[Category: Weis, W I]]
[[Category: Ng KK-S]]
[[Category: C-type lectin]]
[[Category: Weis WI]]
[[Category: Calcium-binding protein]]
[[Category: Lectin]]

Revision as of 08:22, 1 May 2024

MANNOSE-BINDING PROTEIN, SUBTILISIN DIGEST FRAGMENT COMPLEX WITH BETA-METHYL-L-FUCOPYRANOSIDE

1rdj, resolution 1.80Å

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