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- PDB-4q68: Crystal structure of a N-acetylmuramoyl-L-alanine amidase (BACUNI... -

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Basic information

Entry
Database: PDB / ID: 4q68
TitleCrystal structure of a N-acetylmuramoyl-L-alanine amidase (BACUNI_02947) from Bacteroides uniformis ATCC 8492 at 1.07 A resolution
ComponentsUncharacterized protein
KeywordsSTRUCTURAL GENOMICS / UNKNOWN FUNCTION / PF07313 family protein / DUF 1460 / Joint Center for Structural Genomics / JCSG / Protein Structure Initiative / PSI-BIOLOGY
Function / homology
Function and homology information


Putative xylanase fold / Putative xylanase like domain / putative xylanase like fold / putative xylanase like domain / N-acetylmuramoyl-L-alanine amidase-like / N-acetylmuramoyl-L-alanine amidase-like / Papain-like cysteine peptidase superfamily / Roll / Orthogonal Bundle / Mainly Beta / Mainly Alpha
Similarity search - Domain/homology
DUF1460 domain-containing protein
Similarity search - Component
Biological speciesBacteroides uniformis ATCC 8492 (bacteria)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.07 Å
AuthorsJoint Center for Structural Genomics (JCSG)
CitationJournal: Structure / Year: 2014
Title: Structure-guided functional characterization of DUF1460 reveals a highly specific NlpC/P60 amidase family.
Authors: Xu, Q. / Mengin-Lecreulx, D. / Patin, D. / Grant, J.C. / Chiu, H.J. / Jaroszewski, L. / Knuth, M.W. / Godzik, A. / Lesley, S.A. / Elsliger, M.A. / Deacon, A.M. / Wilson, I.A.
History
DepositionApr 21, 2014Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 7, 2014Provider: repository / Type: Initial release
Revision 1.1Dec 24, 2014Group: Structure summary
Revision 1.2Nov 22, 2017Group: Refinement description / Category: software / Item: _software.classification / _software.name
Revision 1.3Jan 24, 2018Group: Database references / Category: citation_author / Item: _citation_author.name
Revision 1.4Sep 18, 2019Group: Data collection / Database references / Derived calculations
Category: citation / citation_author / struct_conn
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _struct_conn.pdbx_leaving_atom_flag
Revision 1.5Jul 29, 2020Group: Data collection / Derived calculations / Structure summary
Category: chem_comp / entity ...chem_comp / entity / pdbx_chem_comp_identifier / 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_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_alt_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.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_alt_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_ptnr1_label_alt_id / _struct_conn.pdbx_ptnr2_label_alt_id / _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
Description: Carbohydrate remediation / Provider: repository / Type: Remediation
Revision 1.6Feb 1, 2023Group: Database references / Structure summary / Category: chem_comp / database_2 / struct_ref_seq_dif
Item: _chem_comp.pdbx_synonyms / _database_2.pdbx_DOI ..._chem_comp.pdbx_synonyms / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details
Revision 1.7Sep 20, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Revision 1.8Dec 6, 2023Group: Data collection / Category: chem_comp_atom / chem_comp_bond / Item: _chem_comp_atom.atom_id / _chem_comp_bond.atom_id_2

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Uncharacterized protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)27,1895
Polymers26,8991
Non-polymers2904
Water10,377576
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPISA
Unit cell
Length a, b, c (Å)46.473, 63.552, 73.997
Angle α, β, γ (deg.)90.000, 90.000, 90.000
Int Tables number19
Space group name H-MP212121

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Components

#1: Protein Uncharacterized protein


Mass: 26898.617 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Bacteroides uniformis ATCC 8492 (bacteria)
Gene: BACUNI_02947 / Plasmid: SpeedET / Production host: Escherichia Coli (E. coli) / Strain (production host): PB1 / References: UniProt: A7V5T8
#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-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Na
#4: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 576 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsTHE CONSTRUCT (24-262) WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS ...THE CONSTRUCT (24-262) 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: 2.03 Å3/Da / Density % sol: 39.44 %
Crystal growTemperature: 277 K / Method: vapor diffusion, sitting drop
Details: 30.00% polyethylene glycol 1500, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: SSRL / Beamline: BL14-1 / Wavelength: 1
DetectorType: MARMOSAIC 325 mm CCD / Detector: CCD / Date: Mar 18, 2014
Details: Vertical focusing mirror; double crystal Si(111) monochromator
RadiationMonochromator: double crystal Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1 Å / Relative weight: 1
ReflectionResolution: 1.07→46.47 Å / Num. obs: 93219 / % possible obs: 95.9 % / Observed criterion σ(I): -3 / Redundancy: 3.93 % / Biso Wilson estimate: 11.481 Å2 / Rmerge(I) obs: 0.034 / Net I/σ(I): 22.87
Reflection shell

Diffraction-ID: 1

Resolution (Å)Redundancy (%)Rmerge(I) obsMean I/σ(I) obsNum. measured obsNum. unique obs% possible all
1.07-1.112.970.34325334851885
1.11-1.150.263532677817394.4
1.15-1.210.1946.9421551041495.1
1.21-1.270.158.934967863895.7
1.27-1.350.11311.837800933196.6
1.35-1.450.08515.636614904397.3
1.45-1.60.05622.539380975097.9
1.6-1.830.03732.538500952298.6
1.83-2.30.02249.339149968699.1
2.3-46.470.01664.9397711014499.1

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Processing

Software
NameVersionClassificationNB
MolProbity3beta29model building
PDB_EXTRACT3.1data extraction
XSCALEdata scaling
REFMAC5.8.0069refinement
XDSdata reduction
MOLREPphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 4H4J

4h4j


Resolution: 1.07→39.355 Å / Cor.coef. Fo:Fc: 0.984 / Cor.coef. Fo:Fc free: 0.976 / Occupancy max: 1 / Occupancy min: 0.07 / SU B: 0.72 / SU ML: 0.016 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.025 / ESU R Free: 0.026 / Stereochemistry target values: MAXIMUM LIKELIHOOD
Details: 1. 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 ...Details: 1. 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. 2. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. 3. N-ACETYL-GLUCOSAMINE (NAG) MODELED WAS PRESENT IN CRYSTALLIZATION CONDITION. 4. SODIUM IONS WERE PRESENT IN PROTEIN BUFFER AND WERE ASSIGNED TENTATIVELY BASED ON DENSITY AND COORDINATION. 5. CRYTALS WERE OBTAINED BY COCROSTALLIZATION IN PRESENCE OF 1.2 MILLIMOLAR GLCNAC.
RfactorNum. reflection% reflectionSelection details
Rfree0.1377 4687 5 %RANDOM
Rwork0.1103 ---
obs0.1117 93156 95.88 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso max: 73 Å2 / Biso mean: 12.8506 Å2 / Biso min: 4.04 Å2
Baniso -1Baniso -2Baniso -3
1--0.09 Å2-0 Å2-0 Å2
2---0.18 Å20 Å2
3---0.27 Å2
Refinement stepCycle: LAST / Resolution: 1.07→39.355 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1831 0 18 576 2425
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0090.0222136
X-RAY DIFFRACTIONr_bond_other_d0.0010.022135
X-RAY DIFFRACTIONr_angle_refined_deg1.3621.9912942
X-RAY DIFFRACTIONr_angle_other_deg0.77435001
X-RAY DIFFRACTIONr_dihedral_angle_1_deg5.7285303
X-RAY DIFFRACTIONr_dihedral_angle_2_deg32.09325.56888
X-RAY DIFFRACTIONr_dihedral_angle_3_deg11.58915433
X-RAY DIFFRACTIONr_dihedral_angle_4_deg16.499157
X-RAY DIFFRACTIONr_chiral_restr0.0880.2336
X-RAY DIFFRACTIONr_gen_planes_refined0.0070.0212429
X-RAY DIFFRACTIONr_gen_planes_other0.0020.02441
X-RAY DIFFRACTIONr_mcbond_it0.8120.8151022
X-RAY DIFFRACTIONr_mcbond_other0.7880.8151021
X-RAY DIFFRACTIONr_mcangle_it1.0951.2281296
X-RAY DIFFRACTIONr_rigid_bond_restr1.25534271
X-RAY DIFFRACTIONr_sphericity_free21.3485326
X-RAY DIFFRACTIONr_sphericity_bonded6.81254478
LS refinement shellResolution: 1.07→1.098 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.229 283 -
Rwork0.199 5502 -
all-5785 -
obs--81.77 %

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