3p0b
From Proteopedia
(Difference between revisions)
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==Thermus thermophilus family GH57 branching enzyme: crystal structure, mechanism of action and products formed== | ==Thermus thermophilus family GH57 branching enzyme: crystal structure, mechanism of action and products formed== | ||
| - | <StructureSection load='3p0b' size='340' side='right' caption='[[3p0b]], [[Resolution|resolution]] 1.35Å' scene=''> | + | <StructureSection load='3p0b' size='340' side='right'caption='[[3p0b]], [[Resolution|resolution]] 1.35Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[3p0b]] is a 1 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[3p0b]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"flavobacterium_thermophilum"_yoshida_and_oshima_1971 "flavobacterium thermophilum" yoshida and oshima 1971]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3P0B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3P0B FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ufa|1ufa]]</td></tr> | + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1ufa|1ufa]]</div></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">tthHB8IM ([ | + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">tthHB8IM ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=274 "Flavobacterium thermophilum" Yoshida and Oshima 1971])</td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3p0b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3p0b OCA], [https://pdbe.org/3p0b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3p0b RCSB], [https://www.ebi.ac.uk/pdbsum/3p0b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3p0b ProSAT]</span></td></tr> |
</table> | </table> | ||
== Function == | == Function == | ||
| - | [[ | + | [[https://www.uniprot.org/uniprot/BE_THET8 BE_THET8]] Catalyzes the formation of branch points in alpha-glucans by cleavage of an alpha-1,4 glycosidic bond and subsequent transfer of the cleaved-off oligosaccharide to a new alpha-1,6 position. The branch chain-length distribution of the reaction products shows degree of polymerization (DP) of 3 to 13, with two local maxima at DP 7 and DP 11. Exhibits an alpha-retaining catalytic mechanism. Is involved in glycogen biosynthesis. Shows a secondary activity, i.e. the hydrolysis of the substrate, being 4% of the total activity. Can use amylose as substrate but not alpha-1,4-linked oligosaccharides of 2-7 glucose residues, beta-cyclodextrin, 6-O-glucosyl-beta-cyclodextrin and 6-O-maltosyl-beta-cyclodextrin. Is not able to branch amylopectin further, it only hydrolyzes amylopectin. Thus, displays preference for linear and long substrates (amylose) over branched structures (amylopectin).<ref>PMID:21097495</ref> |
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Flavobacterium thermophilum yoshida and oshima 1971]] | [[Category: Flavobacterium thermophilum yoshida and oshima 1971]] | ||
| + | [[Category: Large Structures]] | ||
[[Category: Dijkstra, B W]] | [[Category: Dijkstra, B W]] | ||
[[Category: Pijning, T]] | [[Category: Pijning, T]] | ||
Revision as of 11:06, 18 May 2022
Thermus thermophilus family GH57 branching enzyme: crystal structure, mechanism of action and products formed
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