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- PDB-7nl5: Structure of the catalytic domain of the Bacillus circulans alpha... -

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Basic information

Entry
Database: PDB / ID: 7nl5
TitleStructure of the catalytic domain of the Bacillus circulans alpha-1,6 Mannanase in complex with an alpha-1,6-alpha-manno-cyclophellitol trisaccharide inhibitor
ComponentsAlpha-1,6-mannanase
KeywordsHYDROLASE / mannanase / cyclophellitol / epoxide
Function / homology
Function and homology information


carbohydrate binding / carbohydrate metabolic process
Similarity search - Function
: / Glycoside hydrolase, family 76 / Glycosyl hydrolase family 76 / Cellulose binding, type IV / Cellulose Binding Domain Type IV / Carbohydrate binding module (family 6) / CBM6 (carbohydrate binding type-6) domain profile. / Carbohydrate binding module family 6 / Six-hairpin glycosidase superfamily / Galactose-binding-like domain superfamily
Similarity search - Domain/homology
Chem-UKQ / Chem-UKT / Alpha-1,6-mannanase
Similarity search - Component
Biological speciesBacillus circulans (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.4 Å
AuthorsSchroeder, S. / Offen, W.A. / Males, A. / Jin, Y. / De Boer, C. / Enotarpi, J. / Marino, L. / van der Marel, G.A. / Florea, B.I. / Codee, J.D.C. ...Schroeder, S. / Offen, W.A. / Males, A. / Jin, Y. / De Boer, C. / Enotarpi, J. / Marino, L. / van der Marel, G.A. / Florea, B.I. / Codee, J.D.C. / Overkleeft, H.S. / Davies, G.J.
Funding support United Kingdom, 2items
OrganizationGrant numberCountry
Biotechnology and Biological Sciences Research Council (BBSRC)BB/R001162/1 United Kingdom
Biotechnology and Biological Sciences Research Council (BBSRC)BB/T004819/1 United Kingdom
CitationJournal: Chemistry / Year: 2021
Title: Development of Non-Hydrolysable Oligosaccharide Activity-Based Inactivators for Endoglycanases: A Case Study on alpha-1,6 Mannanases.
Authors: Schroder, S.P. / Offen, W.A. / Males, A. / Jin, Y. / de Boer, C. / Enotarpi, J. / Marino, L. / van der Marel, G.A. / Florea, B.I. / Codee, J.D.C. / Overkleeft, H.S. / Davies, G.J.
History
DepositionFeb 22, 2021Deposition site: PDBE / Processing site: PDBE
Revision 1.0Apr 28, 2021Provider: repository / Type: Initial release
Revision 1.1May 5, 2021Group: Database references / Category: citation / citation_author
Item: _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Jun 2, 2021Group: Database references / Category: citation / citation_author / Item: _citation.title
Revision 1.3Jul 14, 2021Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID
Revision 1.4Jan 31, 2024Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_entity_branch_descriptor / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 1.5Oct 16, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Alpha-1,6-mannanase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)41,6284
Polymers40,9311
Non-polymers6973
Water5,242291
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area740 Å2
ΔGint9 kcal/mol
Surface area12790 Å2
MethodPISA
Unit cell
Length a, b, c (Å)43.521, 65.415, 49.442
Angle α, β, γ (deg.)90.000, 101.900, 90.000
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein Alpha-1,6-mannanase


Mass: 40930.859 Da / Num. of mol.: 1 / Mutation: R341Q
Source method: isolated from a genetically manipulated source
Details: N-terminal his-tagged catalytic domain of alpha-1,6-mannanase Aman6
Source: (gene. exp.) Bacillus circulans (bacteria) / Gene: aman6 / Production host: Escherichia coli (E. coli) / Strain (production host): Tuner (DE3) / References: UniProt: Q9Z4P9
#2: Polysaccharide alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose


Type: oligosaccharide / Mass: 342.297 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpa1-6DManpa1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a1122h-1a_1-5]/1-1/a6-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-Manp]{[(6+1)][a-D-Manp]{}}LINUCSPDB-CARE
#3: Chemical ChemComp-UKQ / (1R,6S)-5beta-(Hydroxymethyl)-7-oxabicyclo[4.1.0]heptane-2beta,3beta,4alpha-triol / (1~{R},2~{S},3~{S},4~{R},5~{R},6~{S})-5-(hydroxymethyl)-7-oxabicyclo[4.1.0]heptane-2,3,4-triol / epi-manno-cyclophellitol


Mass: 176.167 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Formula: C7H12O5
#4: Chemical ChemComp-UKT / (1R,2R,3R,4S,5R)-4-(hydroxymethyl)cyclohexane-1,2,3,5-tetrol / (1~{R},2~{R},3~{R},4~{S},5~{R})-4-(hydroxymethyl)cyclohexane-1,2,3,5-tetrol


Mass: 178.183 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C7H14O5
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 291 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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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: 1.68 Å3/Da / Density % sol: 27 %
Crystal growTemperature: 291 K / Method: vapor diffusion, sitting drop / Details: PEG 3350, ammonium nitrate pH 6.5

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: Diamond / Beamline: I04 / Wavelength: 0.9795 Å
DetectorType: DECTRIS PILATUS 6M-F / Detector: PIXEL / Date: Feb 12, 2017
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.9795 Å / Relative weight: 1
ReflectionResolution: 1.4→65.41 Å / Num. obs: 53069 / % possible obs: 99.4 % / Redundancy: 3.8 % / CC1/2: 0.993 / Net I/σ(I): 6.4
Reflection shellResolution: 1.4→1.42 Å / Num. unique obs: 2353 / CC1/2: 0.742

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Processing

Software
NameVersionClassification
REFMAC5.8.0267refinement
PDB_EXTRACT3.27data extraction
DIALSdata reduction
Aimlessdata scaling
REFMACphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 4D4A
Resolution: 1.4→48.43 Å / Cor.coef. Fo:Fc: 0.977 / Cor.coef. Fo:Fc free: 0.968 / SU B: 1.129 / SU ML: 0.044 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.059 / ESU R Free: 0.061 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES : REFINED INDIVIDUALLY THERE IS UNMODELLED DENSITY AT THE N-TERMINAL AND C-TERMINAL RESIDUES SER39 AND ILE375, AND BETWEEN RESIDUES ...Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES : REFINED INDIVIDUALLY THERE IS UNMODELLED DENSITY AT THE N-TERMINAL AND C-TERMINAL RESIDUES SER39 AND ILE375, AND BETWEEN RESIDUES 355 AND 358. THERE IS A REGION OF UNMODELLED DENSITY BETWEEN THE SIDE CHAINS OF LYS273 AND ASN206 OF A SYMMETRY RELATED MOLECULE. THE -1 SUBSITE IS MODELLED WITH 2 PART-OCCUPANCY MANNO-EPOXIDES (EACH AT 0.4), ONE COVALENTLY REACTED AND ONE UNREACTED, WHICH ARE BOTH BOUND TO MANNOBIOSE IN THE -2 AND -3 SUBSITES. THERE IS ALSO A MANNOBIOSE MODELLED AT AN OCCUPANCY OF 0.2 IN THE -2 AND -3 SUBSITES.
RfactorNum. reflection% reflectionSelection details
Rfree0.1733 2576 4.9 %RANDOM
Rwork0.1471 ---
obs0.1483 50450 99.25 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso max: 44.07 Å2 / Biso mean: 16.589 Å2 / Biso min: 10.47 Å2
Baniso -1Baniso -2Baniso -3
1-0.78 Å20 Å20.88 Å2
2--0.1 Å20 Å2
3----1.14 Å2
Refinement stepCycle: final / Resolution: 1.4→48.43 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2658 0 46 295 2999
Biso mean--17.84 29.04 -
Num. residues----335
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0120.0132837
X-RAY DIFFRACTIONr_bond_other_d0.0010.0182434
X-RAY DIFFRACTIONr_angle_refined_deg1.8311.6583883
X-RAY DIFFRACTIONr_angle_other_deg1.6911.6115599
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.7995343
X-RAY DIFFRACTIONr_dihedral_angle_2_deg37.52524.423156
X-RAY DIFFRACTIONr_dihedral_angle_3_deg12.04315407
X-RAY DIFFRACTIONr_dihedral_angle_4_deg22.427157
X-RAY DIFFRACTIONr_chiral_restr0.0990.2371
X-RAY DIFFRACTIONr_gen_planes_refined0.0110.023316
X-RAY DIFFRACTIONr_gen_planes_other0.0010.02698
LS refinement shellResolution: 1.4→1.436 Å / Rfactor Rfree error: 0 / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.289 179 -
Rwork0.238 3415 -
all-3594 -
obs--91.68 %

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