5bxt

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==LNBase in complex with LNB-NHAcAUS==
==LNBase in complex with LNB-NHAcAUS==
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<StructureSection load='5bxt' size='340' side='right' caption='[[5bxt]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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<StructureSection load='5bxt' size='340' side='right'caption='[[5bxt]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[5bxt]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5BXT OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5BXT FirstGlance]. <br>
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<table><tr><td colspan='2'>[[5bxt]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bifidobacterium_bifidum_JCM_1254 Bifidobacterium bifidum JCM 1254]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5BXT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5BXT FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=4WS:N-{[(1R,2R,3R,7S,7AR)-1,2,7-TRIHYDROXYHEXAHYDRO-1H-PYRROLIZIN-3-YL]METHYL}ACETAMIDE'>4WS</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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</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>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5bxp|5bxp]], [[5bxs|5bxs]], [[5bxr|5bxr]]</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=4WS:N-{[(1R,2R,3R,7S,7AR)-1,2,7-TRIHYDROXYHEXAHYDRO-1H-PYRROLIZIN-3-YL]METHYL}ACETAMIDE'>4WS</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Lacto-N-biosidase Lacto-N-biosidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.140 3.2.1.140] </span></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5bxt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5bxt OCA], [https://pdbe.org/5bxt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5bxt RCSB], [https://www.ebi.ac.uk/pdbsum/5bxt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5bxt ProSAT]</span></td></tr>
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<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=5bxt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5bxt OCA], [http://www.rcsb.org/pdb/explore.do?structureId=5bxt RCSB], [http://www.ebi.ac.uk/pdbsum/5bxt PDBsum]</span></td></tr>
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</table>
</table>
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== Function ==
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[https://www.uniprot.org/uniprot/LNBB_BIFB1 LNBB_BIFB1] Present in the infant gut, this enzyme is involved in the assimilation of type-1 human milk oligosaccharides (HMOs). It hydrolyzes via a retaining mechanism the beta-D-GlcNAc-(1->3)-beta-D-Gal linkage in lacto-N-tetraose (LNT or beta-D-Gal-(1->3)-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-D-Glc), an abundant HMO unique to human breast milk, releasing lacto-N-biose (LNB or beta-D-Gal-(1->3)-D-GlcNAc) and lactose (PubMed:18469123, PubMed:23479733). Is a key enzymatic factor for growth and proliferation of B.bifidum in the gut ecosystem of breast-fed infants (Probable). Has substrate preference for unmodified beta-linked LNB since it does not hydrolyze the fucosylated forms of lacto-N-tetraose (lacto-N-fucopentaose I and II) or lacto-N-neotetraose. Is also able to display transglycosylation activity in vitro (PubMed:18469123).<ref>PMID:18469123</ref> <ref>PMID:23479733</ref> <ref>PMID:23479733</ref>
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<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
</div>
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<div class="pdbe-citations 5bxt" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Lacto-N-biosidase]]
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[[Category: Bifidobacterium bifidum JCM 1254]]
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[[Category: Arakawa, T]]
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[[Category: Large Structures]]
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[[Category: Fushinobu, S]]
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[[Category: Arakawa T]]
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[[Category: Ito, T]]
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[[Category: Fushinobu S]]
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[[Category: Distal gut]]
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[[Category: Ito T]]
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[[Category: Human milk oligosaccharide]]
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[[Category: Hydrolase]]
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[[Category: Inhibitor]]
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[[Category: Tim barrel]]
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Current revision

LNBase in complex with LNB-NHAcAUS

PDB ID 5bxt

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