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- PDB-3nuz: Crystal structure of a putative acetyl xylan esterase (BF1801) fr... -

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Basic information

Entry
Database: PDB / ID: 3nuz
TitleCrystal structure of a putative acetyl xylan esterase (BF1801) from Bacteroides fragilis NCTC 9343 at 2.30 A resolution
ComponentsPutative acetyl xylan esterase
KeywordsHYDROLASE / STRUCTURAL GENOMICS / JOINT CENTER FOR STRUCTURAL GENOMICS / JCSG / PROTEIN STRUCTURE INITIATIVE / PSI-BIOLOGY
Function / homologyAbhydrolase, bacterial / Abhydrolase family / : / Alpha/Beta hydrolase fold, catalytic domain / Alpha/Beta hydrolase fold / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta / Abhydrolase family
Function and homology information
Biological speciesBacteroides fragilis (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MAD / Resolution: 2.3 Å
AuthorsJoint Center for Structural Genomics (JCSG)
CitationJournal: To be published
Title: Crystal structure of a putative acetyl xylan esterase (BF1801) from Bacteroides fragilis NCTC 9343 at 2.30 A resolution
Authors: Joint Center for Structural Genomics (JCSG)
History
DepositionJul 7, 2010Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 4, 2010Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Jul 20, 2011Group: Structure summary
Revision 1.3Oct 25, 2017Group: Author supporting evidence / Refinement description / Category: pdbx_struct_assembly_auth_evidence / software / Item: _software.classification / _software.name
Revision 1.4Jul 3, 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 1.5Nov 20, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_entry_details / pdbx_modification_feature / struct_ref_seq_dif
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_entry_details.has_protein_modification / _struct_ref_seq_dif.details

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Putative acetyl xylan esterase
B: Putative acetyl xylan esterase
C: Putative acetyl xylan esterase
D: Putative acetyl xylan esterase
E: Putative acetyl xylan esterase
F: Putative acetyl xylan esterase


Theoretical massNumber of molelcules
Total (without water)278,2346
Polymers278,2346
Non-polymers00
Water4,558253
1
A: Putative acetyl xylan esterase
B: Putative acetyl xylan esterase


Theoretical massNumber of molelcules
Total (without water)92,7452
Polymers92,7452
Non-polymers00
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6600 Å2
ΔGint-35 kcal/mol
Surface area31450 Å2
MethodPISA
2
C: Putative acetyl xylan esterase
D: Putative acetyl xylan esterase


Theoretical massNumber of molelcules
Total (without water)92,7452
Polymers92,7452
Non-polymers00
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6560 Å2
ΔGint-35 kcal/mol
Surface area31800 Å2
MethodPISA
3
E: Putative acetyl xylan esterase
F: Putative acetyl xylan esterase


Theoretical massNumber of molelcules
Total (without water)92,7452
Polymers92,7452
Non-polymers00
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6590 Å2
ΔGint-36 kcal/mol
Surface area31290 Å2
MethodPISA
Unit cell
Length a, b, c (Å)125.612, 125.612, 162.639
Angle α, β, γ (deg.)90.000, 90.000, 120.000
Int Tables number145
Space group name H-MP32
Noncrystallographic symmetry (NCS)NCS domain:
IDEns-IDDetails
11A
21B
31C
41D
51E
61F

NCS domain segments:
Dom-IDComponent-IDEns-IDRefine codeAuth asym-IDAuth seq-ID
1111A25 - 53
2111B25 - 53
3111C25 - 53
4111D25 - 53
5111E25 - 53
6111F25 - 53
1213A54 - 89
2213B54 - 89
3213C54 - 89
4213D54 - 89
5213E54 - 89
6213F54 - 89
1313A90 - 114
2313B90 - 114
3313C90 - 114
4313D90 - 114
5313E90 - 114
6313F90 - 114
1411A115 - 130
2411B115 - 130
3411C115 - 130
4411D115 - 130
5411E115 - 130
6411F115 - 130
1513A131 - 132
2513B131 - 132
3513C131 - 132
4513D131 - 132
5513E131 - 132
6513F131 - 132
1612A133 - 157
2612B133 - 157
3612C133 - 157
4612D133 - 157
5612E133 - 157
6612F133 - 157
1714A158 - 169
2714B158 - 169
3714C158 - 169
4714D158 - 169
5714E158 - 169
6714F158 - 169
1811A170 - 241
2811B170 - 241
3811C170 - 241
4811D170 - 241
5811E170 - 241
6811F170 - 241
1913A242 - 247
2913B242 - 247
3913C242 - 247
4913D242 - 247
5913E242 - 247
6913F242 - 247
11011A248 - 303
21011B248 - 303
31011C248 - 303
41011D248 - 303
51011E248 - 303
61011F248 - 303
11113A304 - 308
21113B304 - 308
31113C304 - 308
41113D304 - 308
51113E304 - 308
61113F304 - 308
11211A309 - 349
21211B309 - 349
31211C309 - 349
41211D309 - 349
51211E309 - 349
61211F309 - 349
11314A350 - 357
21314B350 - 357
31314C350 - 357
41314D350 - 357
51314E350 - 357
61314F350 - 357
11411A358 - 409
21411B358 - 409
31411C358 - 409
41411D358 - 409
51411E358 - 409
61411F358 - 409
11515A410 - 413
21515B410 - 413
31515C410 - 413
41515D410 - 413
51515E410 - 413
61515F410 - 413
DetailsCRYSTAL PACKING ANALYSIS AND SIZE-EXCLUSION CHROMATOGRAPHY COUPLED WITH STATIC LIGHT SCATTERING SUPPORT THE ASSIGNMENT OF A DIMER AS THE SIGNIFICANT OLIGOMERIC FORM IN SOLUTION.

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Components

#1: Protein
Putative acetyl xylan esterase


Mass: 46372.391 Da / Num. of mol.: 6 / Fragment: sequence database residues 20-416
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bacteroides fragilis (bacteria) / Strain: ATCC 25285 / NCTC 9343 / Gene: BF1801 / Plasmid: SpeedET / Production host: Escherichia coli (E. coli) / Strain (production host): HK100 / References: UniProt: Q5LEF1
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 253 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY
Sequence detailsTHIS CONSTRUCT (RESIDUES 20-416) WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG ...THIS CONSTRUCT (RESIDUES 20-416) WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH TEV PROTEASE LEAVING ONLY A GLYCINE (0) FOLLOWED BY 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: 2.66 Å3/Da / Density % sol: 53.8 %
Description: THE STRUCTURE WAS INITIALLY SOLVED BY MAD IN THE APPARENT SPACE GROUP P3221 WITH TWO MOLECULES PER ASYMMETRIC UNIT AND TWINNED WITH THE TWIN LAW (-H, -K, L). THE RESULTING STRUCTURE ...Description: THE STRUCTURE WAS INITIALLY SOLVED BY MAD IN THE APPARENT SPACE GROUP P3221 WITH TWO MOLECULES PER ASYMMETRIC UNIT AND TWINNED WITH THE TWIN LAW (-H, -K, L). THE RESULTING STRUCTURE SUGGESTED A THIRD MOLECULE IN THE ASYMMETRIC UNIT. HOWEVER, DENSITY FOR THIS MOLECULE WAS UNINTERPRETABLE. FURTHER EXAMINATION SUGGESTED THE CORRECT SPACE GROUP WAS P32 WITH 6 MOLECULES PER ASYMMETRIC UNIT AND 4 TWIN DOMAINS. EXPERIMENTAL PHASES WERE RECALCULATED IN THE CORRECT SPACE GROUP P32.
Crystal growTemperature: 277 K / Method: vapor diffusion, sitting drop / pH: 4
Details: 40.0000% MPD, 0.1M Citrate pH 4.0, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL9-2 / Wavelength: 0.91837,0.97934,0.97920
DetectorType: MARMOSAIC 325 mm CCD / Detector: CCD / Date: May 14, 2009 / Details: Flat collimating mirror, toroid focusing mirror
RadiationMonochromator: Double crystal monochromator / Protocol: MAD / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelength
IDWavelength (Å)Relative weight
10.918371
20.979341
30.97921
Reflection twin
Crystal-IDIDOperatorDomain-IDFraction
11H, K, L10.382
11-H, H+K, -L20.136
11-h,-k,l30.162
11K, H, -L40.32
ReflectionResolution: 2.3→29.665 Å / Num. obs: 126358 / % possible obs: 81.6 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 36.371 Å2 / Rmerge(I) obs: 0.09 / Net I/σ(I): 8
Reflection shell
Resolution (Å)Rmerge(I) obsMean I/σ(I) obsNum. measured obsNum. unique obsDiffraction-ID% possible all
2.3-2.380.4951.42282318492174.4
2.38-2.480.4161.72572920938178.3
2.48-2.590.32522392319634179
2.59-2.730.2442.52509520822179.8
2.73-2.90.1793.52446220432180.6
2.9-3.120.12352423620474181.8
3.12-3.430.0757.82454020979183
3.43-3.930.04412.72506521782184.4
3.93-4.930.02718.32456821755186.3
4.93-29.6650.02221.72512022946188.5

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Phasing

PhasingMethod: MAD

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Processing

Software
NameVersionClassificationNB
REFMAC5.5.0110refinement
MolProbity3beta29model building
PHENIXrefinement
SHELXphasing
XSCALEdata scaling
PDB_EXTRACT3.006data extraction
XDSdata reduction
SHELXDphasing
autoSHARPphasing
RefinementMethod to determine structure: MAD / Resolution: 2.3→29.665 Å / Cor.coef. Fo:Fc: 0.957 / Cor.coef. Fo:Fc free: 0.938 / Occupancy max: 1 / Occupancy min: 0.2 / SU B: 8.385 / SU ML: 0.098 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.05 / ESU R Free: 0.036 / Stereochemistry target values: MAXIMUM LIKELIHOOD
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 FOR THE REDUCED SCATTERING POWER DUE TO PARTIAL S-MET INCORPORATION. 3.ATOM RECORDS CONTAIN SUM OF TLS AND RESIDUAL B FACTORS. ANISOU RECORDS CONTAIN SUM OF TLS AND RESIDUAL U FACTORS. 4.SOLVENT MOLECULES WERE EXCLUDED FROM AUTOMATIC TLS ASSIGNMENT. 5.RESIDUES THAT ARE RAMACHANDRAN OUTLIERS ARE SUPPORTED BY ELECTRON DENSITY. 6.THE STRUCTURE IS TETARTOHEDRALLY TWINNED AND WAS REFINED WITH THE FOLLOWING TWIN OPERATORS AND TWIN FRACTIONS: (H, K, L) 0.382; (-H, H+K, -L) 0.137; (-H, -K, L) 0.162; (K, H, -L) 0.319. SEE REMARK 200 FOR ADDITIONAL REMARKS ON TWINNING. 7.DUE TO THE USE OF THIN SHELLS FOR R-FREE SET SELECTION, THE HIGHEST RESOLUTION SHELL (2.36-2.30) DID NOT CONTAIN ANY FREE REFLECTIONS. THE 842 HIGHEST RESOLUTION REFLECTIONS IN THE FREE SET (2.41-2.40) HAD AN R-FREE OF 0.24.
RfactorNum. reflection% reflectionSelection details
Rfree0.182 6616 5.2 %THIN SHELLS
Rwork0.152 ---
obs0.153 126305 99.23 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso max: 72.44 Å2 / Biso mean: 33.793 Å2 / Biso min: 5.6 Å2
Baniso -1Baniso -2Baniso -3
1-10.11 Å20 Å20 Å2
2--10.11 Å20 Å2
3----20.22 Å2
Refinement stepCycle: LAST / Resolution: 2.3→29.665 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms18820 0 0 253 19073
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0090.02219407
X-RAY DIFFRACTIONr_bond_other_d0.0010.0213638
X-RAY DIFFRACTIONr_angle_refined_deg1.441.96726346
X-RAY DIFFRACTIONr_angle_other_deg0.97333023
X-RAY DIFFRACTIONr_dihedral_angle_1_deg3.08452329
X-RAY DIFFRACTIONr_dihedral_angle_2_deg27.57123.24932
X-RAY DIFFRACTIONr_dihedral_angle_3_deg10.966153256
X-RAY DIFFRACTIONr_dihedral_angle_4_deg9.54715153
X-RAY DIFFRACTIONr_chiral_restr0.090.22766
X-RAY DIFFRACTIONr_gen_planes_refined0.0060.02121478
X-RAY DIFFRACTIONr_gen_planes_other0.0010.024109
X-RAY DIFFRACTIONr_mcbond_it0.791311667
X-RAY DIFFRACTIONr_mcbond_other0.33434622
X-RAY DIFFRACTIONr_mcangle_it1.307518908
X-RAY DIFFRACTIONr_scbond_it2.62887740
X-RAY DIFFRACTIONr_scangle_it3.395117430
Refine LS restraints NCS

Ens-ID: 1 / Refine-ID: X-RAY DIFFRACTION

Dom-IDAuth asym-IDNumberTypeRms dev position (Å)Weight position
1A4196TIGHT POSITIONAL0.230.05
2B4196TIGHT POSITIONAL0.230.05
3C4196TIGHT POSITIONAL0.250.05
4D4196TIGHT POSITIONAL0.240.05
5E4196TIGHT POSITIONAL0.230.05
6F4196TIGHT POSITIONAL0.230.05
1A387MEDIUM POSITIONAL0.390.5
2B387MEDIUM POSITIONAL0.390.5
3C387MEDIUM POSITIONAL0.320.5
4D387MEDIUM POSITIONAL0.370.5
5E387MEDIUM POSITIONAL0.40.5
6F387MEDIUM POSITIONAL0.280.5
1A674LOOSE POSITIONAL0.425
2B674LOOSE POSITIONAL0.485
3C674LOOSE POSITIONAL0.455
4D674LOOSE POSITIONAL0.45
5E674LOOSE POSITIONAL0.395
6F674LOOSE POSITIONAL0.45
1A4196TIGHT THERMAL0.480.5
2B4196TIGHT THERMAL0.50.5
3C4196TIGHT THERMAL0.50.5
4D4196TIGHT THERMAL0.50.5
5E4196TIGHT THERMAL0.450.5
6F4196TIGHT THERMAL0.460.5
1A387MEDIUM THERMAL0.442
2B387MEDIUM THERMAL0.392
3C387MEDIUM THERMAL0.42
4D387MEDIUM THERMAL0.412
5E387MEDIUM THERMAL0.462
6F387MEDIUM THERMAL0.362
1A674LOOSE THERMAL0.4810
2B674LOOSE THERMAL0.4510
3C674LOOSE THERMAL0.4910
4D674LOOSE THERMAL0.4410
5E674LOOSE THERMAL0.4110
6F674LOOSE THERMAL0.4410
LS refinement shellResolution: 2.301→2.36 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rwork0.163 9066 -
obs--96.33 %
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)
10.56420.2245-0.01580.85540.1650.9026-0.03720.0137-0.11340.02580.00360.00510.2129-0.01510.03360.0846-0.0143-0.00060.0081-0.00240.062353.5174-52.394634.4374
20.49790.23260.03480.88420.22790.8011-0.00550.03250.0837-0.02130.0478-0.077-0.14410.1781-0.04230.0727-0.04420.00970.0551-0.01770.075671.3249-19.699226.2958
30.57050.3187-0.10980.5558-0.02730.8117-0.00980.0247-0.05960.0010.00480.09160.1266-0.15270.00490.0633-0.0374-0.00190.04580.00970.071353.416720.209321.1636
40.49810.2185-0.02440.8825-0.16490.78820.0276-0.00930.12010.07020.0072-0.0029-0.20680.0515-0.03480.0959-0.02890.02310.01990.0010.053472.893851.993129.259
50.5833-0.0666-0.02840.1911-0.03140.4232-0.02540.0084-0.03350.01760.0207-0.05020.03350.04020.00470.1295-0.01530.00230.09-0.0060.231915.5589-10.320236.8891
60.3392-0.2119-0.08070.54720.05540.4670.03480.0086-0.01330.01980.00080.1159-0.0174-0.1118-0.03560.1131-0.0310.0060.12080.01180.2321-16.05849.611828.5767
Refinement TLS group
IDRefine-IDRefine TLS-IDAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1A25 - 415
2X-RAY DIFFRACTION2B25 - 415
3X-RAY DIFFRACTION3C25 - 415
4X-RAY DIFFRACTION4D25 - 415
5X-RAY DIFFRACTION5E25 - 413
6X-RAY DIFFRACTION6F25 - 413

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