4h04

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==Lacto-N-biosidase from Bifidobacterium bifidum==
==Lacto-N-biosidase from Bifidobacterium bifidum==
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<StructureSection load='4h04' size='340' side='right' caption='[[4h04]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
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<StructureSection load='4h04' size='340' side='right'caption='[[4h04]], [[Resolution|resolution]] 1.80&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4h04]] is a 2 chain structure with sequence from [http://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=4H04 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4H04 FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4h04]] 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=4H04 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4H04 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=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GAL:BETA-D-GALACTOSE'>GAL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">lnbB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=398514 Bifidobacterium bifidum JCM 1254])</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=4h04 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4h04 OCA], [https://pdbe.org/4h04 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4h04 RCSB], [https://www.ebi.ac.uk/pdbsum/4h04 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4h04 ProSAT]</span></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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4h04 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4h04 OCA], [http://pdbe.org/4h04 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4h04 RCSB], [http://www.ebi.ac.uk/pdbsum/4h04 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4h04 ProSAT]</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>
<div style="background-color:#fffaf0;">
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Bifidobacterium bifidum jcm 1254]]
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[[Category: Bifidobacterium bifidum JCM 1254]]
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[[Category: Lacto-N-biosidase]]
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[[Category: Large Structures]]
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[[Category: Ashida, H]]
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[[Category: Ashida H]]
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[[Category: Fushinobu, S]]
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[[Category: Fushinobu S]]
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[[Category: Ito, T]]
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[[Category: Ito T]]
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[[Category: Katayama, T]]
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[[Category: Katayama T]]
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[[Category: Suzuki, R]]
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[[Category: Suzuki R]]
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[[Category: Wada, J]]
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[[Category: Wada J]]
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[[Category: Wakagi, T]]
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[[Category: Wakagi T]]
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[[Category: Yamamoto, K]]
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[[Category: Yamamoto K]]
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[[Category: Extracellular]]
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[[Category: Hydrolase]]
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[[Category: Tim barrel]]
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Revision as of 07:51, 3 November 2022

Lacto-N-biosidase from Bifidobacterium bifidum

PDB ID 4h04

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