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- PDB-2bwa: Structure of Endoglucanase 12A (Cel12A) from Rhodothermus marinus... -

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Basic information

Entry
Database: PDB / ID: 2bwa
TitleStructure of Endoglucanase 12A (Cel12A) from Rhodothermus marinus in complex with cellopentaose, 20 minute soak.
ComponentsENDOGLUCANASE
KeywordsHYDROLASE / ENDOGLUCANASE / CELLULASE / GLYCOSIDE HYDROLASE FAMILY 12 / CELLOPENTAOSE
Function / homology
Function and homology information


cellulase / cellulase activity / polysaccharide catabolic process
Similarity search - Function
Glycoside hydrolase family 12 / Glycosyl hydrolase family 12 / Glycoside hydrolase family 11/12, catalytic domain / Glycoside hydrolase family 11/12 / Prokaryotic membrane lipoprotein lipid attachment site profile. / Concanavalin A-like lectin/glucanase domain superfamily / Jelly Rolls / Sandwich / Mainly Beta
Similarity search - Domain/homology
alpha-cellotriose / alpha-cellobiose / Cellulase
Similarity search - Component
Biological speciesRHODOTHERMUS MARINUS (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / OTHER / Resolution: 1.68 Å
AuthorsCrennell, S.J. / Nordberg-Karlsson, E.
CitationJournal: J. Mol. Biol. / Year: 2006
Title: Dimerisation and an increase in active site aromatic groups as adaptations to high temperatures: X-ray solution scattering and substrate-bound crystal structures of Rhodothermus marinus endoglucanase Cel12A.
Authors: Crennell, S.J. / Cook, D. / Minns, A. / Svergun, D. / Andersen, R.L. / Nordberg Karlsson, E.
History
DepositionJul 13, 2005Deposition site: PDBE / Processing site: PDBE
Revision 1.0Dec 21, 2005Provider: repository / Type: Initial release
Revision 1.1May 8, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Mar 28, 2018Group: Database references / Source and taxonomy / Category: citation / citation_author / entity_src_gen
Item: _citation.journal_abbrev / _citation.page_last ..._citation.journal_abbrev / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.title / _citation_author.name / _entity_src_gen.pdbx_host_org_ncbi_taxonomy_id / _entity_src_gen.pdbx_host_org_scientific_name / _entity_src_gen.pdbx_host_org_strain / _entity_src_gen.pdbx_host_org_variant
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Other / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / database_PDB_caveat / entity / entity_name_com / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_database_status / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_molecule_features / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_validate_chiral / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_asym_id / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.auth_seq_id / _atom_site.label_alt_id / _atom_site.label_asym_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.label_entity_id / _atom_site.occupancy / _atom_site.type_symbol / _chem_comp.name / _chem_comp.type / _entity.formula_weight / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _entity.src_method / _entity.type / _pdbx_database_status.status_code_sf / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_validate_chiral.auth_asym_id / _pdbx_validate_chiral.auth_seq_id / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Remark 650 HELIX DETERMINATION METHOD: AUTHOR PROVIDED.
Remark 700 SHEET DETERMINATION METHOD: AUTHOR PROVIDED.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: ENDOGLUCANASE
B: ENDOGLUCANASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)52,38016
Polymers50,4242
Non-polymers1,95614
Water8,341463
1
A: ENDOGLUCANASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)26,3659
Polymers25,2121
Non-polymers1,1538
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPQS
2
B: ENDOGLUCANASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)26,0157
Polymers25,2121
Non-polymers8036
Water181
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPQS
Unit cell
Length a, b, c (Å)55.740, 67.310, 130.420
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121
Noncrystallographic symmetry (NCS)NCS oper: (Code: given
Matrix: (-0.997743, -0.055309, 0.038071), (-0.064937, 0.939053, -0.337584), (-0.01708, -0.339295, -0.940525)
Vector: 56.351, 5.9847, 15.3783)

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Components

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Protein , 1 types, 2 molecules AB

#1: Protein ENDOGLUCANASE


Mass: 25211.918 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) RHODOTHERMUS MARINUS (bacteria) / Strain: ITI-378
Description: MARINE THERMOPHILIC EUBACTERIUM IOSLATED FROM ALKALINE SUBMARINE HOT SPRINGS
Plasmid: (SP, L)CEL12A / Production host: Escherichia coli BL21(DE3) (bacteria) / References: UniProt: O33897, cellulase

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Sugars , 2 types, 2 molecules

#2: Polysaccharide beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-alpha-D-glucopyranose / alpha-cellotriose


Type: oligosaccharide, Oligosaccharide / Class: Metabolism / Mass: 504.438 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: alpha-cellotriose
DescriptorTypeProgram
DGlcpb1-4DGlcpb1-4DGlcpa1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1a_1-5][a2122h-1b_1-5]/1-2-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[][b-D-Glcp]{[(4+1)][b-D-Glcp]{[(4+1)][b-D-Glcp]{}}}LINUCSPDB-CARE
#3: Polysaccharide beta-D-glucopyranose-(1-4)-alpha-D-glucopyranose / alpha-cellobiose


Type: oligosaccharide, Oligosaccharide / Class: Metabolism / Mass: 342.297 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: oligosaccharide / References: alpha-cellobiose
DescriptorTypeProgram
DGlcpb1-4DGlcpa1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,2,1/[a2122h-1a_1-5][a2122h-1b_1-5]/1-2/a4-b1WURCSPDB2Glycan 1.1.0
[][b-D-Glcp]{[(4+1)][b-D-Glcp]{}}LINUCSPDB-CARE

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Non-polymers , 3 types, 475 molecules

#4: Chemical
ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL


Mass: 92.094 Da / Num. of mol.: 11 / Source method: obtained synthetically / Formula: C3H8O3
#5: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: SO4
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 463 / Source method: isolated from a natural source / Formula: H2O

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Details

Sequence detailsTHE AUTHORS STATE THAT THE SEQUENCE BETWEEN RESIDUES 69 AND 93 IN THE DBREF RECORDS BELOW REPRESENT ...THE AUTHORS STATE THAT THE SEQUENCE BETWEEN RESIDUES 69 AND 93 IN THE DBREF RECORDS BELOW REPRESENT THE TRUE SEQUENCE OF THE PROTEIN. THE CORRESPONDING UNIPROT CONTAINS THE RESULTS OF A SEQUENCING ERROR DISCOVERED DURING THE PREVIOUS DETERMINATION OF THE STRUCTURE (PDB ENTRY 1H0B).

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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: 2.4 Å3/Da / Density % sol: 39 %
Crystal growpH: 6.5
Details: 10MG/ML CEL12A (PROTEIN), 0.1M MES PH6.5, 0.2M LI2SO4, 1.5M (NH4)2SO4, pH 6.50

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: BM14 / Wavelength: 0.915
DetectorType: MARRESEARCH / Detector: CCD / Date: Jul 25, 2003 / Details: MIRRORS
RadiationMonochromator: SI (111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.915 Å / Relative weight: 1
ReflectionResolution: 1.67→30 Å / Num. obs: 56938 / % possible obs: 98.6 % / Observed criterion σ(I): 0 / Redundancy: 9.8 % / Biso Wilson estimate: 21.7 Å2 / Rmerge(I) obs: 0.03 / Net I/σ(I): 33.6
Reflection shellResolution: 1.67→1.73 Å / Redundancy: 3.3 % / Rmerge(I) obs: 0.32 / Mean I/σ(I) obs: 3.4 / % possible all: 99.3

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Processing

Software
NameVersionClassification
CNS1.1refinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
RefinementMethod to determine structure: OTHER / Resolution: 1.68→29.91 Å / Rfactor Rfree error: 0.004 / Data cutoff high absF: 1660750.55 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0
Details: BOTH GLUCOSE AND THE CRYOPROTECTANT GLYCEROL ARE BOUND IN THE ACTIVE SITE CLEFT
RfactorNum. reflection% reflectionSelection details
Rfree0.228 2848 5.1 %RANDOM
Rwork0.187 ---
obs0.187 55884 98.5 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 51.4587 Å2 / ksol: 0.353673 e/Å3
Displacement parametersBiso mean: 30.6 Å2
Baniso -1Baniso -2Baniso -3
1-8.51 Å20 Å20 Å2
2---7.76 Å20 Å2
3----0.75 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.24 Å0.19 Å
Luzzati d res low-5 Å
Luzzati sigma a0.22 Å0.19 Å
Refinement stepCycle: LAST / Resolution: 1.68→29.91 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3548 0 128 463 4139
Refine LS restraints
Refine-IDTypeDev idealDev ideal target
X-RAY DIFFRACTIONc_bond_d0.01
X-RAY DIFFRACTIONc_bond_d_na
X-RAY DIFFRACTIONc_bond_d_prot
X-RAY DIFFRACTIONc_angle_d
X-RAY DIFFRACTIONc_angle_d_na
X-RAY DIFFRACTIONc_angle_d_prot
X-RAY DIFFRACTIONc_angle_deg1.5
X-RAY DIFFRACTIONc_angle_deg_na
X-RAY DIFFRACTIONc_angle_deg_prot
X-RAY DIFFRACTIONc_dihedral_angle_d25.7
X-RAY DIFFRACTIONc_dihedral_angle_d_na
X-RAY DIFFRACTIONc_dihedral_angle_d_prot
X-RAY DIFFRACTIONc_improper_angle_d0.83
X-RAY DIFFRACTIONc_improper_angle_d_na
X-RAY DIFFRACTIONc_improper_angle_d_prot
X-RAY DIFFRACTIONc_mcbond_it2.391.5
X-RAY DIFFRACTIONc_mcangle_it3.152
X-RAY DIFFRACTIONc_scbond_it3.352
X-RAY DIFFRACTIONc_scangle_it4.532.5
LS refinement shellResolution: 1.68→1.79 Å / Rfactor Rfree error: 0.014 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.302 467 5.1 %
Rwork0.267 8710 -
obs--98.5 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1PROTEIN_REP.PARAMPROTEIN.TOP
X-RAY DIFFRACTION2WATER_REP.PARAMWATER_REP.TOP
X-RAY DIFFRACTION3ION.PARAMION.TOP
X-RAY DIFFRACTION4CARBOHYDRATE.PARAMCARBOHYDRATE.TOP
X-RAY DIFFRACTION5GOL_XPLOR_PAR.TXTGOL_XPLOR_TOP.TXT

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