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- PDB-1oc6: structure native of the D405N mutant of the CELLOBIOHYDROLASE CEL... -

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Basic information

Entry
Database: PDB / ID: 1oc6
Titlestructure native of the D405N mutant of the CELLOBIOHYDROLASE CEL6A FROM HUMICOLA INSOLENS at 1.5 angstrom resolution
ComponentsCELLOBIOHYDROLASE II
KeywordsHYDROLASE / CELLULOSE DEGRADATION / CELLOBIOHYDROLASE / CELLULASE / GLYCOSIDE HYDROLASE FAMILY 6 / PROCESSIVE MECHANISM
Function / homology
Function and homology information


cellulose 1,4-beta-cellobiosidase (non-reducing end) / cellulose 1,4-beta-cellobiosidase activity / cellulose binding / cellulose catabolic process / extracellular region
Similarity search - Function
Glycosyl hydrolases family 6 signature 2. / Glycosyl hydrolases family 6 signature 1. / Glycoside hydrolase, family 6, conserved site / 1, 4-beta cellobiohydrolase / 1, 4-beta cellobiohydrolase / 1, 4-beta cellobiohydrolase superfamily / Glycosyl hydrolases family 6 / CBM1 (carbohydrate binding type-1) domain signature. / Cellulose-binding domain, fungal / Cellulose-binding domain superfamily ...Glycosyl hydrolases family 6 signature 2. / Glycosyl hydrolases family 6 signature 1. / Glycoside hydrolase, family 6, conserved site / 1, 4-beta cellobiohydrolase / 1, 4-beta cellobiohydrolase / 1, 4-beta cellobiohydrolase superfamily / Glycosyl hydrolases family 6 / CBM1 (carbohydrate binding type-1) domain signature. / Cellulose-binding domain, fungal / Cellulose-binding domain superfamily / Fungal cellulose binding domain / CBM1 (carbohydrate binding type-1) domain profile. / Fungal-type cellulose-binding domain / TIM Barrel / Alpha-Beta Barrel / Alpha Beta
Similarity search - Domain/homology
Biological speciesHUMICOLA INSOLENS (fungus)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.5 Å
AuthorsVarrot, A. / Frandsen, T.P. / Von Ossowski, I. / Boyer, V. / Driguez, H. / Schulein, M. / Davies, G.J.
CitationJournal: Structure / Year: 2003
Title: Structural Basis for Ligand Binding and Processivity in Cellobiohydrolase Cel6A from Humicola Insolens
Authors: Varrot, A. / Frandsen, T.P. / Von Ossowski, I. / Boyer, V. / Driguez, H. / Schulein, M. / Davies, G.J.
History
DepositionFeb 6, 2003Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 10, 2003Provider: repository / Type: Initial release
Revision 1.1May 8, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Jul 24, 2019Group: Data collection / Derived calculations / Category: diffrn_source / struct_conn
Item: _diffrn_source.pdbx_synchrotron_site / _struct_conn.pdbx_leaving_atom_flag
Revision 1.4Jul 29, 2020Group: Data collection / Derived calculations ...Data collection / Derived calculations / Other / Structure summary
Category: chem_comp / entity ...chem_comp / entity / pdbx_chem_comp_identifier / pdbx_database_status / pdbx_entity_nonpoly / pdbx_struct_conn_angle / struct_conn / struct_site / struct_site_gen
Item: _chem_comp.name / _chem_comp.type ..._chem_comp.name / _chem_comp.type / _entity.pdbx_description / _pdbx_database_status.status_code_sf / _pdbx_entity_nonpoly.name / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr1_symmetry / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.ptnr3_symmetry / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_conn.ptnr2_symmetry
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 1.5Dec 13, 2023Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp / chem_comp_atom ...chem_comp / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Remark 700 SHEET THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN ORDER TO REPRESENT THIS FEATURE IN ... SHEET THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN ORDER TO REPRESENT THIS FEATURE IN THE SHEET RECORDS BELOW, TWO SHEETS ARE DEFINED.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: CELLOBIOHYDROLASE II
hetero molecules


Theoretical massNumber of molelcules
Total (without water)41,08810
Polymers40,1821
Non-polymers9069
Water8,377465
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPQS
Unit cell
Length a, b, c (Å)57.504, 60.148, 97.207
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein CELLOBIOHYDROLASE II / CELLULASE / CEL6A


Mass: 40181.723 Da / Num. of mol.: 1 / Fragment: CATALYTIC CORE DOMAIN RESIDUES 87-450 / Mutation: YES
Source method: isolated from a genetically manipulated source
Details: N-LINKED N-ACETYLGLUCOSAMINE ON RESIDUE ASN 141 / Source: (gene. exp.) HUMICOLA INSOLENS (fungus)
Plasmid: UNDER CONTROL OF THE FUNGAL AMYLASE PROMOTER AND AMYLOGLUCOSIDASE TERMINATOR
Production host: ASPERGILLUS ORYZAE (mold)
References: UniProt: Q9C1S9*PLUS, cellulose 1,4-beta-cellobiosidase (non-reducing end)
#2: Sugar ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0
#3: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca
#4: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: C3H8O3
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 465 / Source method: isolated from a natural source / Formula: H2O
Compound detailsENGINEERED MUTATION ASP 405 ASN CHAIN A
Sequence detailsTHIS MUTANT HAS BEEN PRODUCED BY SITE DIRECTED MUTAGENESIS. THE CLONING WAS PERFORMED SUCH AS ONLY ...THIS MUTANT HAS BEEN PRODUCED BY SITE DIRECTED MUTAGENESIS. THE CLONING WAS PERFORMED SUCH AS ONLY THE SIGNAL PEPTIDE AND THE CATALYTIC DOMAIN WERE EXPRESSED. THE CATALYTIC DOMAIN SHOULD BEGIN AT PHE 89. OUR NUMBERING BEGIN AT THE FIRST RESIDUE OF THE MATURE PROTEIN WHICH EXPLAIN A DIFFERENCE WITH THE DATABASE SEQUENCE WHICH INCLUDE THE PROSEQUENCE. HERE,DUE TO THE INCORRECT PROCESSING OF THE SIGNAL PEPTIDE ALA 87 AND PRO 88 ARE ALSO PRESENT IN THE MATURE PROTEIN. THIS PROTEIN IS CLOSELY RELATED TO AVICELASE 2 (SWISS-PROT ACCESSION ID:Q9C1S9) WITH WHICH IT HAS 96% SEQUENCE IDENTITY.

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 4.05 Å3/Da / Density % sol: 38.8 %
Crystal growpH: 7
Details: PROTEIN WAS CONCENTRATED TO 20 MG/ML IN WATER. CRYSTALLISATION IN 200MM CALCIUM ACETATE IN 100MM HEPES BUFFER AT PH 7.0. PRECIPITANT WAS 18% POLYETHYLENE GLYCOL 8000.
Crystal grow
*PLUS
pH: 7 / Method: vapor diffusion, hanging drop
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
1100 mMHEPES1reservoirpH7.0
2200 mMcalcium acetate1reservoir
318 %PEG80001reservoir

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: EMBL/DESY, HAMBURG / Beamline: BW7B / Wavelength: 0.8445
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Oct 15, 1999
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.8445 Å / Relative weight: 1
ReflectionResolution: 1.5→20 Å / Num. obs: 54127 / % possible obs: 99.5 % / Observed criterion σ(I): 0 / Redundancy: 3.7 % / Rmerge(I) obs: 0.07 / Net I/σ(I): 17.2
Reflection shellResolution: 1.5→1.55 Å / Redundancy: 3.5 % / Rmerge(I) obs: 0.358 / Mean I/σ(I) obs: 3.4 / % possible all: 95
Reflection
*PLUS
Highest resolution: 1.5 Å / Lowest resolution: 20 Å / Redundancy: 3.7 % / Rmerge(I) obs: 0.07
Reflection shell
*PLUS
% possible obs: 95 % / Redundancy: 3.5 % / Rmerge(I) obs: 0.358 / Mean I/σ(I) obs: 3.4

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Processing

Software
NameVersionClassification
REFMAC5.1.06refinement
DENZOdata reduction
SCALEPACKdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1OC5

1oc5


Resolution: 1.5→20 Å / Cor.coef. Fo:Fc: 0.978 / Cor.coef. Fo:Fc free: 0.965 / SU B: 0.913 / SU ML: 0.034 / Cross valid method: THROUGHOUT / ESU R: 0.071 / ESU R Free: 0.059 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.149 2710 5 %RANDOM
Rwork0.113 ---
obs0.115 51648 99.4 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: BABINET MODEL WITH MASK
Displacement parametersBiso mean: 8.34 Å2
Baniso -1Baniso -2Baniso -3
1--0.42 Å20 Å20 Å2
2--0.34 Å20 Å2
3---0.08 Å2
Refinement stepCycle: LAST / Resolution: 1.5→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2839 0 57 465 3361
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0150.0213066
X-RAY DIFFRACTIONr_bond_other_d0.0020.022668
X-RAY DIFFRACTIONr_angle_refined_deg1.7041.944187
X-RAY DIFFRACTIONr_angle_other_deg1.35736232
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.6745365
X-RAY DIFFRACTIONr_dihedral_angle_2_deg40.13524.452155
X-RAY DIFFRACTIONr_dihedral_angle_3_deg11.81515452
X-RAY DIFFRACTIONr_dihedral_angle_4_deg19.8581519
X-RAY DIFFRACTIONr_chiral_restr0.1080.2446
X-RAY DIFFRACTIONr_gen_planes_refined0.0090.023415
X-RAY DIFFRACTIONr_gen_planes_other0.0030.02614
X-RAY DIFFRACTIONr_nbd_refined0.2250.2573
X-RAY DIFFRACTIONr_nbd_other0.2750.23043
X-RAY DIFFRACTIONr_nbtor_refined
X-RAY DIFFRACTIONr_nbtor_other0.0820.21591
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1340.2278
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined0.1370.25
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.1290.28
X-RAY DIFFRACTIONr_symmetry_vdw_other0.2290.247
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.1270.240
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it1.2051.51846
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it1.75922991
X-RAY DIFFRACTIONr_mcangle_other
X-RAY DIFFRACTIONr_scbond_it2.48931220
X-RAY DIFFRACTIONr_scbond_other
X-RAY DIFFRACTIONr_scangle_it3.6094.51196
X-RAY DIFFRACTIONr_scangle_other
X-RAY DIFFRACTIONr_long_range_B_refined
X-RAY DIFFRACTIONr_long_range_B_other
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 1.5→1.54 Å / Total num. of bins used: 20 /
RfactorNum. reflection
Rfree0.182 175
Rwork0.144 3475
Refinement
*PLUS
Lowest resolution: 20 Å
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONr_bond_d0.015
X-RAY DIFFRACTIONr_angle_d
X-RAY DIFFRACTIONr_angle_deg1.7

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