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- PDB-3nqh: Crystal structure of a glycosyl hydrolase (BT_2959) from BACTEROI... -

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Basic information

Entry
Database: PDB / ID: 3nqh
TitleCrystal structure of a glycosyl hydrolase (BT_2959) from BACTEROIDES THETAIOTAOMICRON VPI-5482 at 2.11 A resolution
ComponentsGlycosyl hydrolaseGlycoside hydrolase
KeywordsHYDROLASE / Structural Genomics / Joint Center for Structural Genomics / JCSG / Protein Structure Initiative / PSI-2
Function / homology
Function and homology information


hydrolase activity, hydrolyzing O-glycosyl compounds / carbohydrate metabolic process
Similarity search - Function
Glycoside hydrolase, family 43 / Glycosyl hydrolases family 43 / Glycosyl hydrolase domain; family 43 / 5 Propeller / Tachylectin-2; Chain A / Glycosyl hydrolase, five-bladed beta-propellor domain superfamily / Galactose-binding domain-like / Galactose-binding-like domain superfamily / Jelly Rolls / Sandwich / Mainly Beta
Similarity search - Domain/homology
ACETATE ION / Glycosyl hydrolase family 43 protein
Similarity search - Component
Biological speciesBacteroides thetaiotaomicron (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MAD / Resolution: 2.11 Å
AuthorsJoint Center for Structural Genomics (JCSG)
CitationJournal: To be published
Title: Crystal structure of a glycosyl hydrolase (BT_2959) from BACTEROIDES THETAIOTAOMICRON VPI-5482 at 2.11 A resolution
Authors: Joint Center for Structural Genomics (JCSG)
History
DepositionJun 29, 2010Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 28, 2010Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Oct 25, 2017Group: Author supporting evidence / Refinement description / Category: pdbx_struct_assembly_auth_evidence / software / Item: _software.classification / _software.name
Revision 1.3Jul 17, 2019Group: Data collection / Derived calculations / Refinement description
Category: software / struct_conn
Item: _software.classification / _software.contact_author ..._software.classification / _software.contact_author / _software.contact_author_email / _software.language / _software.location / _software.name / _software.type / _software.version / _struct_conn.pdbx_leaving_atom_flag
Revision 1.4Feb 1, 2023Group: Database references / Derived calculations / Category: database_2 / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Glycosyl hydrolase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)50,5954
Polymers50,3521
Non-polymers2433
Water4,306239
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
A: Glycosyl hydrolase
hetero molecules

A: Glycosyl hydrolase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)101,1908
Polymers100,7042
Non-polymers4866
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation8_555-y,-x,-z+1/21
Buried area2590 Å2
ΔGint-12 kcal/mol
Surface area34130 Å2
MethodPISA
Unit cell
Length a, b, c (Å)78.923, 78.923, 166.870
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number96
Space group name H-MP43212
DetailsANALYTICAL SIZE EXCLUSION CHROMATOGRAPHY SUPPORTS THE ASSIGNMENT OF A MONOMER AS A SIGNIFICANT OLIGOMERIZATION STATE IN SOLUTION.

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Components

#1: Protein Glycosyl hydrolase / Glycoside hydrolase / Glycosyl hydrolase family 43 protein


Mass: 50351.758 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bacteroides thetaiotaomicron (bacteria)
Strain: VPI-5482 / Gene: BT_2959 / Plasmid: SpeedET / Production host: Escherichia Coli (E. coli) / Strain (production host): HK100 / References: UniProt: Q8A3J5
#2: Chemical ChemComp-GOL / GLYCEROL / GLYCERIN / PROPANE-1,2,3-TRIOL / Glycerol


Mass: 92.094 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C3H8O3
#3: Chemical ChemComp-ACT / ACETATE ION / Acetate


Mass: 59.044 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C2H3O2
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 239 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsSEQUENCE THE CONSTRUCT WAS EXPRESSED WITH AN N-TERMINAL PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE ...SEQUENCE THE CONSTRUCT WAS EXPRESSED WITH AN N-TERMINAL PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH TEV PROTEASE LEAVING ONLY A GLYCINE (0) FOLLOWED BY RESIDUES 22-460 OF THE TARGET SEQUENCE.

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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: 2.58 Å3/Da / Density % sol: 52.33 %
Crystal growTemperature: 277 K / Method: vapor diffusion, sitting drop / pH: 5.6
Details: 15.0000% Glycerol, 0.1700M NH4OAc, 25.5000% PEG-4000, 0.1M Citrate pH 5.6, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL11-1 / Wavelength: 0.91837,0.97852,0.97802
DetectorType: MARMOSAIC 325 mm CCD / Detector: CCD / Date: Apr 16, 2009 / Details: Flat mirror (vertical focusing)
RadiationMonochromator: Single crystal Si(111) bent monochromator (horizontal focusing)
Protocol: MAD / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelength
IDWavelength (Å)Relative weight
10.918371
20.978521
30.978021
ReflectionResolution: 2.11→29.801 Å / Num. obs: 31222 / % possible obs: 99.9 % / Redundancy: 6.3 % / Biso Wilson estimate: 35.599 Å2 / Rmerge(I) obs: 0.119 / Rsym value: 0.119 / Net I/σ(I): 10.9
Reflection shell
Resolution (Å)Redundancy (%)Rmerge(I) obsMean I/σ(I) obsNum. measured allNum. unique allRsym value% possible all
2.11-2.166.40.9231.81442822480.923100
2.16-2.226.40.7492.31417622070.749100
2.22-2.296.40.6532.61377621480.653100
2.29-2.366.40.5573.11343920890.557100
2.36-2.446.40.4813.51294820260.481100
2.44-2.526.40.4014.21263819700.401100
2.52-2.626.40.364.81209018850.36100
2.62-2.726.40.27161180918530.271100
2.72-2.856.40.1987.71117517490.198100
2.85-2.986.40.1649.41080116920.164100
2.98-3.156.40.1311.91032616200.13100
3.15-3.346.30.10315.1962515230.103100
3.34-3.576.30.08519.2911414450.085100
3.57-3.856.30.07222.8851213580.072100
3.85-4.226.30.0625.9777712440.06100
4.22-4.726.20.05529.2705911460.055100
4.72-5.456.10.06529.4622910260.065100
5.45-6.6760.0627.952488810.0699.9
6.67-9.445.80.05328.740557010.05399.3
9.44-29.85.20.04729.921414110.04795.1

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Phasing

PhasingMethod: MAD

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Processing

Software
NameVersionClassificationNB
REFMAC5.5.0110refinement
PHENIXrefinement
SHELXphasing
MolProbity3beta29model building
SCALA3.2.5data scaling
PDB_EXTRACT3.006data extraction
MOSFLMdata reduction
SHELXDphasing
autoSHARPphasing
RefinementMethod to determine structure: MAD / Resolution: 2.11→29.801 Å / Cor.coef. Fo:Fc: 0.96 / Cor.coef. Fo:Fc free: 0.941 / Occupancy max: 1 / Occupancy min: 0.5 / SU B: 11.054 / SU ML: 0.145 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R Free: 0.183
Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES
Details: 1. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS 2. A MET-INHIBITION PROTOCOL WAS USED FOR SELENOMETHIONINE INCORPORATION DURING PROTEIN EXPRESSION. THE OCCUPANCY OF THE SE ATOMS IN THE ...Details: 1. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS 2. A MET-INHIBITION PROTOCOL WAS USED FOR SELENOMETHIONINE INCORPORATION DURING PROTEIN EXPRESSION. THE OCCUPANCY OF THE SE ATOMS IN THE MSE RESIDUES WAS REDUCED TO 0.75 TO ACCOUNT FOR THE REDUCED SCATTERING POWER DUE TO PARTIAL S-MET INCORPORATION. 3. ATOM RECORD CONTAINS SUM OF TLS AND RESIDUAL B FACTORS. ANISOU RECORD CONTAINS SUM OF TLS AND RESIDUAL U FACTORS. 4. WATERS WERE EXCLUDED FROM AUTOMATIC TLS ASSIGNMENT. 5. GLYCEROL (GOL) AND ACETATE (ACT) FROM THE CRYOPROTECTION AND CRYSTALLIZATION CONDITIONS HAVE BEEN MODELED IN THE STRUCTURE. 6. THE SIDECHAIN OF ASN A128 IS NEAR THE INTERFACE BETWEEN SYMMETRY-RELATED MOLECULES AND COULD NOT BE RELIABLY MODELED.
RfactorNum. reflection% reflectionSelection details
Rfree0.238 1564 5 %RANDOM
Rwork0.195 ---
obs0.197 31147 99.85 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.4 Å / Solvent model: MASK
Displacement parametersBiso max: 109.28 Å2 / Biso mean: 47.063 Å2 / Biso min: 17.37 Å2
Baniso -1Baniso -2Baniso -3
1-1.65 Å20 Å20 Å2
2--1.65 Å20 Å2
3----3.3 Å2
Refinement stepCycle: LAST / Resolution: 2.11→29.801 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms3444 0 16 239 3699
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0110.0223632
X-RAY DIFFRACTIONr_bond_other_d0.0010.022476
X-RAY DIFFRACTIONr_angle_refined_deg1.5231.954940
X-RAY DIFFRACTIONr_angle_other_deg0.84836027
X-RAY DIFFRACTIONr_dihedral_angle_1_deg3.695458
X-RAY DIFFRACTIONr_dihedral_angle_2_deg29.43723.774159
X-RAY DIFFRACTIONr_dihedral_angle_3_deg10.86515592
X-RAY DIFFRACTIONr_dihedral_angle_4_deg14.9151517
X-RAY DIFFRACTIONr_chiral_restr0.0930.2518
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.0214086
X-RAY DIFFRACTIONr_gen_planes_other0.0010.02768
X-RAY DIFFRACTIONr_mcbond_it1.29932220
X-RAY DIFFRACTIONr_mcbond_other0.2893907
X-RAY DIFFRACTIONr_mcangle_it2.29353595
X-RAY DIFFRACTIONr_scbond_it3.92181412
X-RAY DIFFRACTIONr_scangle_it5.238111338
LS refinement shellResolution: 2.11→2.165 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.405 87 -
Rwork0.346 2153 -
all-2240 -
obs--99.87 %
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL112)L122)L132)L222)L232)L332)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T112)T122)T132)T222)T232)T332)Origin x (Å)Origin y (Å)Origin z (Å)
11.2221-0.13110.24490.929-0.55854.2648-0.0977-0.046-0.01780.08760.1094-0.0512-0.2620.0018-0.01180.03960.0283-0.00730.10080.0120.01717.09119.55749.348
20.78-0.1371-0.19381.03270.65185.0177-0.14170.2575-0.0312-0.13010.1111-0.1971-0.11940.30070.03050.0568-0.08160.02980.1832-0.00530.046410.89118.91227.354
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A22 - 212
2X-RAY DIFFRACTION2A213 - 460

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