3lpp: Difference between revisions
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==Crystal complex of N-terminal sucrase-isomaltase with kotalanol== | ==Crystal complex of N-terminal sucrase-isomaltase with kotalanol== | ||
<StructureSection load='3lpp' size='340' side='right' caption='[[3lpp]], [[Resolution|resolution]] 2.15Å' scene=''> | <StructureSection load='3lpp' size='340' side='right' caption='[[3lpp]], [[Resolution|resolution]] 2.15Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3lpp]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/ | <table><tr><td colspan='2'>[[3lpp]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3LPP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3LPP FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=KTL:(1S,2R,3R,4S)-1-{(1S)-2-[(2R,3S,4S)-3,4-DIHYDROXY-2-(HYDROXYMETHYL)TETRAHYDROTHIOPHENIUM-1-YL]-1-HYDROXYETHYL}-2,3,4,5-TETRAHYDROXYPENTYL+SULFATE'>KTL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=KTL:(1S,2R,3R,4S)-1-{(1S)-2-[(2R,3S,4S)-3,4-DIHYDROXY-2-(HYDROXYMETHYL)TETRAHYDROTHIOPHENIUM-1-YL]-1-HYDROXYETHYL}-2,3,4,5-TETRAHYDROXYPENTYL+SULFATE'>KTL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3lpo|3lpo]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3lpo|3lpo]]</td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SI ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SI ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Oligo-1,6-glucosidase Oligo-1,6-glucosidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.10 3.2.1.10] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Oligo-1,6-glucosidase Oligo-1,6-glucosidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.10 3.2.1.10] </span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3lpp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3lpp OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3lpp RCSB], [http://www.ebi.ac.uk/pdbsum/3lpp PDBsum]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3lpp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3lpp OCA], [http://pdbe.org/3lpp PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3lpp RCSB], [http://www.ebi.ac.uk/pdbsum/3lpp PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3lpp ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Disease == | == Disease == | ||
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<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/ | </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=3lpp ConSurf]. | ||
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | </div> | ||
<div class="pdbe-citations 3lpp" style="background-color:#fffaf0;"></div> | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Human]] | ||
[[Category: Oligo-1,6-glucosidase]] | [[Category: Oligo-1,6-glucosidase]] | ||
[[Category: Rose, D R]] | [[Category: Rose, D R]] | ||
Revision as of 01:24, 6 August 2016
Crystal complex of N-terminal sucrase-isomaltase with kotalanolCrystal complex of N-terminal sucrase-isomaltase with kotalanol
Structural highlights
Disease[SUIS_HUMAN] Congenital sucrase-isomaltase deficiency. Defects in SI are the cause of congenital sucrase-isomaltase deficiency (CSID) [MIM:222900]; also known as disaccharide intolerance I. CSID is an autosomal recessive intestinal disorder that is clinically characterized by fermentative diarrhea, abdominal pain, and cramps upon ingestion of sugar. The symptoms are the consequence of absent or drastically reduced enzymatic activities of sucrase and isomaltase. The prevalence of CSID is 0.02 % in individuals of European descent and appears to be much higher in Greenland, Alaskan, and Canadian native people. CSID arises due to post-translational perturbations in the intracellular transport, polarized sorting, aberrant processing, and defective function of SI.[1] [2] [3] [4] [5] Function[SUIS_HUMAN] Plays an important role in the final stage of carbohydrate digestion. Isomaltase activity is specific for both alpha-1,4- and alpha-1,6-oligosaccharides.[6] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedHuman maltase-glucoamylase (MGAM) and sucrase-isomaltase (SI) are small intestinal enzymes that work concurrently to hydrolyze the mixture of linear alpha-1,4- and branched alpha-1,6-oligosaccharide substrates that typically make up terminal starch digestion products. MGAM and SI are each composed of duplicated catalytic domains, N- and C-terminal, which display overlapping substrate specificities. The N-terminal catalytic domain of human MGAM (ntMGAM) has a preference for short linear alpha-1,4-oligosaccharides, whereas N-terminal SI (ntSI) has a broader specificity for both alpha-1,4- and alpha-1,6-oligosaccharides. Here we present the crystal structure of the human ntSI, in apo form to 3.2 A and in complex with the inhibitor kotalanol to 2.15 A resolution. Structural comparison with the previously solved structure of ntMGAM reveals key active site differences in ntSI, including a narrow hydrophobic +1 subsite, which may account for its additional substrate specificity for alpha-1,6 substrates. Structural basis for substrate selectivity in human maltase-glucoamylase and sucrase-isomaltase N-terminal domains.,Sim L, Willemsma C, Mohan S, Naim HY, Pinto BM, Rose DR J Biol Chem. 2010 Jun 4;285(23):17763-70. Epub 2010 Mar 31. PMID:20356844[7] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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