|
|
| Line 1: |
Line 1: |
| | | | |
| | ==N-TERMINAL CELLULOSE-BINDING DOMAIN FROM CELLULOMONAS FIMI BETA-1,4-GLUCANASE C, NMR, MINIMIZED AVERAGE STRUCTURE== | | ==N-TERMINAL CELLULOSE-BINDING DOMAIN FROM CELLULOMONAS FIMI BETA-1,4-GLUCANASE C, NMR, MINIMIZED AVERAGE STRUCTURE== |
| - | <StructureSection load='1ulo' size='340' side='right'caption='[[1ulo]], [[NMR_Ensembles_of_Models | 1 NMR models]]' scene=''> | + | <StructureSection load='1ulo' size='340' side='right'caption='[[1ulo]]' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1ulo]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacterium_fimi"_mcbeth_and_scales_1913 "bacterium fimi" mcbeth and scales 1913]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ULO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ULO FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1ulo]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Cellulomonas_fimi Cellulomonas fimi]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ULO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ULO FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1ulp|1ulp]]</div></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Cellulase Cellulase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.4 3.2.1.4] </span></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=1ulo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ulo OCA], [https://pdbe.org/1ulo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ulo RCSB], [https://www.ebi.ac.uk/pdbsum/1ulo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ulo ProSAT]</span></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=1ulo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ulo OCA], [https://pdbe.org/1ulo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ulo RCSB], [https://www.ebi.ac.uk/pdbsum/1ulo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ulo ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/GUNC_CELFA GUNC_CELFA]] The biological conversion of cellulose to glucose generally requires three types of hydrolytic enzymes: (1) Endoglucanases which cut internal beta-1,4-glucosidic bonds; (2) Exocellobiohydrolases that cut the dissaccharide cellobiose from the non-reducing end of the cellulose polymer chain; (3) Beta-1,4-glucosidases which hydrolyze the cellobiose and other short cello-oligosaccharides to glucose.
| + | [https://www.uniprot.org/uniprot/GUNC_CELFA GUNC_CELFA] The biological conversion of cellulose to glucose generally requires three types of hydrolytic enzymes: (1) Endoglucanases which cut internal beta-1,4-glucosidic bonds; (2) Exocellobiohydrolases that cut the dissaccharide cellobiose from the non-reducing end of the cellulose polymer chain; (3) Beta-1,4-glucosidases which hydrolyze the cellobiose and other short cello-oligosaccharides to glucose. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| Line 36: |
Line 35: |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Bacterium fimi mcbeth and scales 1913]] | + | [[Category: Cellulomonas fimi]] |
| - | [[Category: Cellulase]]
| + | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Johnson, P E]] | + | [[Category: Johnson PE]] |
| - | [[Category: Mcintosh, L P]] | + | [[Category: Mcintosh LP]] |
| - | [[Category: Cellulose degradation]]
| + | |
| - | [[Category: Cellulose-binding domain]]
| + | |
| - | [[Category: Hydrolase]]
| + | |
| Structural highlights
Function
GUNC_CELFA The biological conversion of cellulose to glucose generally requires three types of hydrolytic enzymes: (1) Endoglucanases which cut internal beta-1,4-glucosidic bonds; (2) Exocellobiohydrolases that cut the dissaccharide cellobiose from the non-reducing end of the cellulose polymer chain; (3) Beta-1,4-glucosidases which hydrolyze the cellobiose and other short cello-oligosaccharides to glucose.
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 PubMed
Multidimensional heteronuclear nuclear magnetic resonance (NMR) spectroscopy was used to determine the tertiary structure of the 152 amino acid N-terminal cellulose-binding domain from Cellulomonas fimi 1,4-beta-glucanase CenC (CBDN1). CBDN1 was studied in the presence of saturating concentrations of cellotetraose, but due to spectral overlap, the oligosaccharide was not included in the structure calculations. A total of 1705 interproton nuclear Overhauser effect (NOE), 56 phi, 88 psi, 42 chi 1, 9 chi 2 dihedral angle, and 88 hydrogen-bond restraints were used to calculate 25 final structures. These structures have a rmsd from the average of 0.79 +/- 0.11 A for all backbone atoms excluding disordered termini and 0.44 +/- 0.05 A for residues with regular secondary structures. CBDN1 is composed of 10 beta-strands, folded into two antiparallel beta-sheets with the topology of a jelly-roll beta-sandwich. The strands forming the face of the protein previously determined by chemical shift perturbations to be responsible for cellooligosaccharide binding [Johnson, P. E., Tomme, P., Joshi, M. D., & McIntosh, L. P. (1996) Biochemistry 35, 13895-13906] are shorter than those forming the opposite side of the protein. This results in a 5-stranded binding cleft, containing a central strip of hydrophobic residues that is flanked on both sides by polar hydrogen-bonding groups. The presence of this cleft provides a structural explanation for the unique selectivity of CBDN1 for amorphous cellulose and other soluble oligosaccharides and the lack of binding to crystalline cellulose. The tertiary structure of CBDN1 is strikingly similar to that of the bacterial 1,3-1,4-beta-glucanases, as well as other sugar-binding proteins with jelly-roll folds.
Structure of the N-terminal cellulose-binding domain of Cellulomonas fimi CenC determined by nuclear magnetic resonance spectroscopy.,Johnson PE, Joshi MD, Tomme P, Kilburn DG, McIntosh LP Biochemistry. 1996 Nov 12;35(45):14381-94. PMID:8916925[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Johnson PE, Joshi MD, Tomme P, Kilburn DG, McIntosh LP. Structure of the N-terminal cellulose-binding domain of Cellulomonas fimi CenC determined by nuclear magnetic resonance spectroscopy. Biochemistry. 1996 Nov 12;35(45):14381-94. PMID:8916925 doi:http://dx.doi.org/10.1021/bi961612s
|
