Bacillus sp. CHD6a β-glucosidase Download PDB file

Protein: Beta-glucosidase

Organism: Bacillus sp. CHD6a

Lenght: 443

UniprotID: A0A0N0VN29 (Download sequence)

Template: 5DT5:A (73.29%) | [φ,ψ] plot

Amino acid:

Local position¹:

Global position²:

Conserved > 80%:

Conserved 50-79%:

Secondary structure:

Co-evoluted network:

Mutation predicted:

Co-evolution network³

Residue	Community	Network

¹ Residue Corresponding position in the amino acids sequence.

² We performed multiple alignment between all GH1 beta-glucosidases sequences using Clustal omega (default parameters). We collected the amino acids that appear in more than 50% of the sequences and more than 80% of the sequences.

³ Co-evolution network was generated using PFSTATS and family GH1 sequences obtained from PFAM. Amino acid residues edges represent correlation links between them.

									

						                        
Loop | bend | hydrogen bonded turn', 
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                            '', 
                            '1', 
                            '410',
                            'methionine');" 
                            onmouseout="hideAminoAcid('M', 'M1')"  
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			Line: 315

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Local position: 1
Global position: 410"
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                            M                            
                        					                        						                        
Loop | bend | hydrogen bonded turn', 
                            'default', 
                            '', 
                            '2', 
                            '411',
                            'leucine');" 
                            onmouseout="hideAminoAcid('L', 'L2')"  
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			File: /scratch/html/glutantbase/application/libraries/Template.php

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			File: /scratch/html/glutantbase/index.php

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                            L                            
                        					                        						                        
Loop | bend | hydrogen bonded turn', 
                            'default', 
                            '', 
                            '3', 
                            '412',
                            'asparagine');" 
                            onmouseout="hideAminoAcid('N', 'N3')"  
                            onmouseover="showAminoAcid('N3'); selectID(glviewer,3)" 
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			File: /scratch/html/glutantbase/application/libraries/Template.php

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			File: /scratch/html/glutantbase/application/controllers/Protein.php

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			File: /scratch/html/glutantbase/index.php

			Line: 315

			Function: require_once			
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                            title="N
Local position: 3
Global position: 412"
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                            N                            
                        					                        						                        

Loop | bend | hydrogen bonded turn', 'info', '', '4', '413', 'phenylalanine');" onmouseout="hideAminoAcid('F', 'F4')" onmouseover="showAminoAcid('F4'); selectID(glviewer,4)" class="btn btn-info conserved50_active

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File: /scratch/html/glutantbase/application/libraries/Template.php
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Function: view

File: /scratch/html/glutantbase/application/controllers/Protein.php
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Function: show

File: /scratch/html/glutantbase/index.php
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ss_loop_inactive" style="" title="F Local position: 4 Global position: 413" > F

									

						                        
Loop | bend | hydrogen bonded turn', 
                            'info', 
                            '', 
                            '36', 
                            '467',
                            'phenylalanine');" 
                            onmouseout="hideAminoAcid('F', 'F36')"  
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			File: /scratch/html/glutantbase/application/libraries/Template.php

			Line: 13

			Function: view			

			File: /scratch/html/glutantbase/application/controllers/Protein.php

			Line: 188

			Function: show			

			File: /scratch/html/glutantbase/index.php

			Line: 315

			Function: require_once			
 ss_loop_inactive" 
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                            title="F
Local position: 36
Global position: 467"
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                            F                            
                        					                        						                        

Loop | bend | hydrogen bonded turn', 'default', '', '37', '468', 'serine');" onmouseout="hideAminoAcid('S', 'S37')" onmouseover="showAminoAcid('S37'); selectID(glviewer,37)" class="btn btn-default

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File: /scratch/html/glutantbase/application/libraries/Template.php
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Function: view

File: /scratch/html/glutantbase/application/controllers/Protein.php
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Function: show

File: /scratch/html/glutantbase/index.php
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ss_loop_inactive" style="" title="S Local position: 37 Global position: 468" > S

									

						                        
Loop | bend | hydrogen bonded turn', 
                            'default', 
                            '', 
                            '71', 
                            '557',
                            'valine');" 
                            onmouseout="hideAminoAcid('V', 'V71')"  
                            onmouseover="showAminoAcid('V71'); selectID(glviewer,71)" 
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			Function: _error_handler			

			File: /scratch/html/glutantbase/application/libraries/Template.php

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			Function: view			

			File: /scratch/html/glutantbase/application/controllers/Protein.php

			Line: 188

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			File: /scratch/html/glutantbase/index.php

			Line: 315

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 ss_loop_inactive" 
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Local position: 71
Global position: 557"
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                            V                            
                        					                        						                        

Loop | bend | hydrogen bonded turn', 'default', '', '72', '558', 'aspartic acid');" onmouseout="hideAminoAcid('D', 'D72')" onmouseover="showAminoAcid('D72'); selectID(glviewer,72)" class="btn btn-default

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File: /scratch/html/glutantbase/application/libraries/Template.php
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Function: view

File: /scratch/html/glutantbase/application/controllers/Protein.php
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Function: show

File: /scratch/html/glutantbase/index.php
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Function: require_once

ss_loop_inactive" style="" title="D Local position: 72 Global position: 558" > D

									

						                        
Loop | bend | hydrogen bonded turn', 
                            'info', 
                            '', 
                            '106', 
                            '635',
                            'leucine');" 
                            onmouseout="hideAminoAcid('L', 'L106')"  
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			Function: _error_handler			

			File: /scratch/html/glutantbase/application/libraries/Template.php

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			File: /scratch/html/glutantbase/application/controllers/Protein.php

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			File: /scratch/html/glutantbase/index.php

			Line: 315

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                            L                            
                        					                        						                        

Loop | bend | hydrogen bonded turn', 'default', '', '107', '636', 'glutamic acid');" onmouseout="hideAminoAcid('E', 'E107')" onmouseover="showAminoAcid('E107'); selectID(glviewer,107)" class="btn btn-default

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File: /scratch/html/glutantbase/application/libraries/Template.php
Line: 13
Function: view

File: /scratch/html/glutantbase/application/controllers/Protein.php
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Function: show

File: /scratch/html/glutantbase/index.php
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ss_loop_inactive" style="" title="E Local position: 107 Global position: 636" > E

									

						                        
Loop | bend | hydrogen bonded turn', 
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                            '', 
                            '141', 
                            '708',
                            'leucine');" 
                            onmouseout="hideAminoAcid('L', 'L141')"  
                            onmouseover="showAminoAcid('L141'); selectID(glviewer,141)" 
                            class="btn btn-info conserved50_active
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			File: /scratch/html/glutantbase/index.php

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Local position: 141
Global position: 708"
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                            L                            
                        					                        						                        

Loop | bend | hydrogen bonded turn', 'default', '', '142', '709', 'glutamic acid');" onmouseout="hideAminoAcid('E', 'E142')" onmouseover="showAminoAcid('E142'); selectID(glviewer,142)" class="btn btn-default

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File: /scratch/html/glutantbase/application/libraries/Template.php
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Function: view

File: /scratch/html/glutantbase/application/controllers/Protein.php
Line: 188
Function: show

File: /scratch/html/glutantbase/index.php
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ss_loop_inactive" style="" title="E Local position: 142 Global position: 709" > E

									

						                        
Loop | bend | hydrogen bonded turn', 
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                            '176', 
                            '785',
                            'histidine');" 
                            onmouseout="hideAminoAcid('H', 'H176')"  
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			File: /scratch/html/glutantbase/application/libraries/Template.php

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			Function: view			

			File: /scratch/html/glutantbase/application/controllers/Protein.php

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			File: /scratch/html/glutantbase/index.php

			Line: 315

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Local position: 176
Global position: 785"
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                            H                            
                        					                        						                        

Loop | bend | hydrogen bonded turn', 'success', '', '177', '786', 'histidine');" onmouseout="hideAminoAcid('H', 'H177')" onmouseover="showAminoAcid('H177'); selectID(glviewer,177)" class="btn btn-success mutations_active

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File: /scratch/html/glutantbase/application/libraries/Template.php
Line: 13
Function: view

File: /scratch/html/glutantbase/application/controllers/Protein.php
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Function: show

File: /scratch/html/glutantbase/index.php
Line: 315
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ss_loop_inactive" style="color: orange; font-weight:bold;" title="H Local position: 177 Global position: 786" > H

									

						                        
Loop | bend | hydrogen bonded turn', 
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                            '', 
                            '211', 
                            '944',
                            'serine');" 
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			File: /scratch/html/glutantbase/application/libraries/Template.php

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			Function: view			

			File: /scratch/html/glutantbase/application/controllers/Protein.php

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			File: /scratch/html/glutantbase/index.php

			Line: 315

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                            style=""
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Local position: 211
Global position: 944"
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                            S                            
                        					                        						                        

Loop | bend | hydrogen bonded turn', 'default', '', '212', '945', 'serine');" onmouseout="hideAminoAcid('S', 'S212')" onmouseover="showAminoAcid('S212'); selectID(glviewer,212)" class="btn btn-default

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File: /scratch/html/glutantbase/application/libraries/Template.php
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File: /scratch/html/glutantbase/application/controllers/Protein.php
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Function: show

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Loop | bend | hydrogen bonded turn', 
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Function: _error_handler

File: /scratch/html/glutantbase/application/libraries/Template.php
Line: 13
Function: view

File: /scratch/html/glutantbase/application/controllers/Protein.php
Line: 188
Function: show

File: /scratch/html/glutantbase/index.php
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Loop | bend | hydrogen bonded turn', 
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                            '281', 
                            '1372',
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			File: /scratch/html/glutantbase/application/libraries/Template.php

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			File: /scratch/html/glutantbase/application/controllers/Protein.php

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			File: /scratch/html/glutantbase/index.php

			Line: 315

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                            style=""
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Local position: 281
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                            E                            
                        					                        						                        

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Function: _error_handler

File: /scratch/html/glutantbase/application/libraries/Template.php
Line: 13
Function: view

File: /scratch/html/glutantbase/application/controllers/Protein.php
Line: 188
Function: show

File: /scratch/html/glutantbase/index.php
Line: 315
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ss_loop_inactive" style="" title="S Local position: 282 Global position: 1374" > S

									

						                        
Loop | bend | hydrogen bonded turn', 
                            'default', 
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                            '316', 
                            '1496',
                            'aspartic acid');" 
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			File: /scratch/html/glutantbase/application/libraries/Template.php

			Line: 13

			Function: view			

			File: /scratch/html/glutantbase/application/controllers/Protein.php

			Line: 188

			Function: show			

			File: /scratch/html/glutantbase/index.php

			Line: 315

			Function: require_once			
 ss_loop_inactive" 
                            style=""
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Local position: 316
Global position: 1496"
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                            D                            
                        					                        						                        

Loop | bend | hydrogen bonded turn', 'default', '', '317', '1497', 'tyrosine');" onmouseout="hideAminoAcid('Y', 'Y317')" onmouseover="showAminoAcid('Y317'); selectID(glviewer,317)" class="btn btn-default

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Function: _error_handler

File: /scratch/html/glutantbase/application/libraries/Template.php
Line: 13
Function: view

File: /scratch/html/glutantbase/application/controllers/Protein.php
Line: 188
Function: show

File: /scratch/html/glutantbase/index.php
Line: 315
Function: require_once

ss_loop_inactive" style="" title="Y Local position: 317 Global position: 1497" > Y

									

						                        
Loop | bend | hydrogen bonded turn', 
                            'primary', 
                            ' coevo_1_inactive', 
                            '351', 
                            '1567',
                            'glutamic acid');" 
                            onmouseout="hideAminoAcid('E', 'E351')"  
                            onmouseover="showAminoAcid('E351'); selectID(glviewer,351)" 
                            class="btn btn-primary coevo_1_inactive active_site_active
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			Function: _error_handler			

			File: /scratch/html/glutantbase/application/libraries/Template.php

			Line: 13

			Function: view			

			File: /scratch/html/glutantbase/application/controllers/Protein.php

			Line: 188

			Function: show			

			File: /scratch/html/glutantbase/index.php

			Line: 315

			Function: require_once			
 ss_loop_inactive" 
                            style="color: orange; font-weight:bold;"
                            title="E
Local position: 351
Global position: 1567"
                        >
                            E                            
                        					                        						                        

Loop | bend | hydrogen bonded turn', 'danger', ' coevo_1_inactive', '352', '1568', 'asparagine');" onmouseout="hideAminoAcid('N', 'N352')" onmouseover="showAminoAcid('N352'); selectID(glviewer,352)" class="btn btn-danger coevo_1_inactive conserved80_active

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Function: _error_handler

File: /scratch/html/glutantbase/application/libraries/Template.php
Line: 13
Function: view

File: /scratch/html/glutantbase/application/controllers/Protein.php
Line: 188
Function: show

File: /scratch/html/glutantbase/index.php
Line: 315
Function: require_once

ss_loop_inactive" style="" title="N Local position: 352 Global position: 1568" > N

									

						                        
Loop | bend | hydrogen bonded turn', 
                            'default', 
                            '', 
                            '386', 
                            '1671',
                            'aspartic acid');" 
                            onmouseout="hideAminoAcid('D', 'D386')"  
                            onmouseover="showAminoAcid('D386'); selectID(glviewer,386)" 
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Acid/base catalytic
Conserved (50-79%)
Conserved (> 80%)
Extrapoled mutation
Catalytic pocket (0-6.5Å from ligand)

Extrapoled mutations

| Cellobiose docking

Poses (avg)	Affinity (wild)	Affinity (mutant)	ΔAffinity	ΔAffinity expected	Status
1	-6.60	-6.67	-0.07	ΔAffinity < 0	✓
1-3	-6.38	-6.49	-0.11	ΔAffinity < 0	✓
1-10	-5.73	-6.06	-0.33	ΔAffinity < 0	✓

| Glucose docking

Poses (avg)	Affinity (wild)	Affinity (mutant)	ΔAffinity	ΔAffinity expected	Status
1	-6.60	-6.40	0.2	ΔAffinity > 0	✓
1-3	-6.38	-6.09	0.29	ΔAffinity > 0	✓
1-10	-5.67	-5.70	-0.03	ΔAffinity > 0	x

Methodology

Comparative modeling

Three-dimensional structures were modeled by homology using MODELLER. Sequences were collected in UniProt. We searched for the E.C. number of beta-glucosidases (3.2.1.21) and collected sequences of family GH1 (~3000). For each sequence, we selected the structure of highest identity using BLAST against the PDB database to be used as a template. Sequences with identity lower than 25% were discarded. 100 models were constructed for each sequence. The best model was selected using the lowest value of the DOPE score. Mutants were modeled using MODELLER's mutation script. The mutations were based on beneficial mutations described in the literature.

Minimization

PDB models were minimized using AMBER tools. We performed 1000 steps of minimization in the vacuum (parameters: imin=1, maxcyc=1000, ncyc=750, cut=10.0, ntb=0, igb=0).

Multiple alignment

We performed multiple alignment using Clustal Omega (default parameters). We used Python scripts to detect conservation.

Docking

We performed docking of glucose (product) and cellobiose (substrate) for wild and mutant beta-glucosidases using AutoDock Vina (parameters: exhaustiveness = 20; num_modes = 10). The box center was defined using the median coordinate of the last atom of the two catalytic glutamates. The experiment was performed in triplicate. We collected ten poses for each docking and analyzed the average of affinity energies predicted by the software for (i) pose 1, (ii) poses 1-3, and (iii) poses 1-10.