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<StructureSection load='1kx1' size='340' side='right'caption='[[1kx1]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
<StructureSection load='1kx1' size='340' side='right'caption='[[1kx1]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1kx1]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KX1 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1KX1 FirstGlance]. <br>
<table><tr><td colspan='2'>[[1kx1]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KX1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KX1 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=MAN:ALPHA-D-MANNOSE'>MAN</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]] 2.8&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1kwt|1kwt]], [[1kwu|1kwu]], [[1kwv|1kwv]], [[1kww|1kww]], [[1kwx|1kwx]], [[1kwy|1kwy]], [[1kwz|1kwz]], [[1kx0|1kx0]]</div></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=MAN:ALPHA-D-MANNOSE'>MAN</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MBL1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Buffalo rat])</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=1kx1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kx1 OCA], [https://pdbe.org/1kx1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1kx1 RCSB], [https://www.ebi.ac.uk/pdbsum/1kx1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1kx1 ProSAT]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1kx1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1kx1 OCA], [http://pdbe.org/1kx1 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1kx1 RCSB], [http://www.ebi.ac.uk/pdbsum/1kx1 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1kx1 ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/MBL1_RAT MBL1_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/MBL1_RAT MBL1_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=1kx1 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=1kx1 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Mannose-binding proteins (MBPs) are C-type animal lectins that recognize high mannose oligosaccharides on pathogenic cell surfaces. MBPs bind to their carbohydrate ligands by forming a series of Ca(2+) coordination and hydrogen bonds with two hydroxyl groups equivalent to the 3- and 4-OH of mannose. In this work, the determinants of the orientation of sugars bound to rat serum and liver MBPs (MBP-A and MBP-C) have been systematically investigated. The crystal structures of MBP-A soaked with monosaccharides and disaccharides and also the structure of the MBP-A trimer cross-linked by a high mannose asparaginyl oligosaccharide reveal that monosaccharides or alpha1-6-linked mannose bind to MBP-A in one orientation, whereas alpha1-2- or alpha1-3-linked mannose binds in an orientation rotated 180 degrees around a local symmetry axis relating the 3- and 4-OH groups. In contrast, a similar set of ligands all bind to MBP-C in a single orientation. The mutation of MBP-A His(189) to its MBP-C equivalent, valine, causes Man alpha 1-3Man to bind in a mixture of orientations. These data combined with modeling indicate that the residue at this position influences the orientation of bound ligands in MBP. We propose that the control of binding orientation can influence the recognition of multivalent ligands. A lateral association of trimers in the cross-linked crystals may reflect interactions within higher oligomers of MBP-A that are stabilized by multivalent ligands.
Orientation of bound ligands in mannose-binding proteins. Implications for multivalent ligand recognition.,Ng KK, Kolatkar AR, Park-Snyder S, Feinberg H, Clark DA, Drickamer K, Weis WI J Biol Chem. 2002 May 3;277(18):16088-95. Epub 2002 Feb 15. PMID:11850428<ref>PMID:11850428</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1kx1" 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: Buffalo rat]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Clark, D A]]
[[Category: Rattus norvegicus]]
[[Category: Drickamer, K]]
[[Category: Clark DA]]
[[Category: Feinberg, H]]
[[Category: Drickamer K]]
[[Category: Kolatkar, A R]]
[[Category: Feinberg H]]
[[Category: Ng, K K]]
[[Category: Kolatkar AR]]
[[Category: Park-Snyder, S]]
[[Category: Ng KK]]
[[Category: Weis, W I]]
[[Category: Park-Snyder S]]
[[Category: C-type lectin]]
[[Category: Weis WI]]
[[Category: Calcium-binding protein]]
[[Category: Immune system]]
[[Category: Lectin]]
[[Category: Sugar binding protein]]

Latest revision as of 08:04, 3 April 2024

Rat mannose protein A complexed with Man6-GlcNAc2-Asn

1kx1, resolution 2.80Å

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