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- PDB-1fwa: KLEBSIELLA AEROGENES UREASE, C319A VARIANT AT PH 7.5 -

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Basic information

Entry
Database: PDB / ID: 1fwa
TitleKLEBSIELLA AEROGENES UREASE, C319A VARIANT AT PH 7.5
Components(UREASE) x 3
KeywordsHYDROLASE / HYDROLASE(UREA AMIDO) / MUTANT / NICKEL METALLOENZYME
Function / homology
Function and homology information


urease complex / urease / urease activity / urea catabolic process / nickel cation binding / cytoplasm
Similarity search - Function
Urease, subunit B / Urease, beta subunit / Urease; subunit A / Urease, gamma-like subunit / Urease, gamma subunit / : / Urease active site / Urease active site. / Urease nickel binding site / Urease nickel ligands signature. ...Urease, subunit B / Urease, beta subunit / Urease; subunit A / Urease, gamma-like subunit / Urease, gamma subunit / : / Urease active site / Urease active site. / Urease nickel binding site / Urease nickel ligands signature. / Urease, beta subunit / Urease, alpha subunit / Urease alpha subunit, C-terminal / Urease, beta subunit superfamily / : / Urease beta subunit / Urease domain profile. / Urease alpha-subunit, N-terminal domain / Urease alpha-subunit, N-terminal domain / Urease, gamma/gamma-beta subunit / Urease, gamma subunit superfamily / Urease, gamma subunit / Urease, subunit C; domain 1 / Urease, subunit C, domain 1 / Amidohydrolase family / Metal-dependent hydrolase, composite domain superfamily / Amidohydrolase-related / Metal-dependent hydrolases / Metal-dependent hydrolase / Ribbon / Roll / TIM Barrel / Alpha-Beta Barrel / 2-Layer Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
CARBONATE ION / NICKEL (II) ION / Urease subunit alpha / Urease subunit beta / Urease subunit gamma
Similarity search - Component
Biological speciesKlebsiella aerogenes (bacteria)
MethodX-RAY DIFFRACTION / Resolution: 2 Å
AuthorsPearson, M.A. / Karplus, P.A.
Citation
Journal: Biochemistry / Year: 1997
Title: Structures of Cys319 variants and acetohydroxamate-inhibited Klebsiella aerogenes urease.
Authors: Pearson, M.A. / Michel, L.O. / Hausinger, R.P. / Karplus, P.A.
#1: Journal: Biochemistry / Year: 1996
Title: Structures of the Klebsiella Aerogenes Urease Apoenzyme and Two Active-Site Mutants
Authors: Jabri, E. / Karplus, P.A.
#2: Journal: Science / Year: 1995
Title: The Crystal Structure of Urease from Klebsiella Aerogenes
Authors: Jabri, E. / Carr, M.B. / Hausinger, R.P. / Karplus, P.A.
#3: Journal: J.Biol.Chem. / Year: 1992
Title: Site-Directed Mutagenesis of the Active Site Cysteine in Klebsiella Aerogenes Urease
Authors: Martin, P.R. / Hausinger, R.P.
#4: Journal: J.Biol.Chem. / Year: 1991
Title: Identification of the Essential Cysteine Residue in Klebsiella Aerogenes Urease
Authors: Todd, M.J. / Hausinger, R.P.
History
DepositionApr 23, 1997Processing site: BNL
Revision 1.0Oct 15, 1997Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Nov 3, 2021Group: Database references / Derived calculations / Other
Category: database_2 / pdbx_database_status ...database_2 / pdbx_database_status / pdbx_struct_conn_angle / struct_conn / 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 / _pdbx_database_status.process_site / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_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_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_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_leaving_atom_flag / _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 / _struct_conn.ptnr2_label_seq_id / _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

Downloads & links

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Assembly

Deposited unit
A: UREASE
B: UREASE
C: UREASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)83,3686
Polymers83,1903
Non-polymers1773
Water5,062281
1
A: UREASE
B: UREASE
C: UREASE
hetero molecules

A: UREASE
B: UREASE
C: UREASE
hetero molecules

A: UREASE
B: UREASE
C: UREASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)250,10418
Polymers249,5719
Non-polymers5329
Water1629
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation5_555z,x,y1
crystal symmetry operation9_555y,z,x1
Buried area48750 Å2
ΔGint-323 kcal/mol
Surface area55190 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)170.800, 170.800, 170.800
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number199
Space group name H-MI213

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Components

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Protein , 3 types, 3 molecules ABC

#1: Protein UREASE / UREA AMIDOHYDROLASE


Mass: 11100.928 Da / Num. of mol.: 1 / Mutation: K(C 217)KCX, C(C 319)A
Source method: isolated from a genetically manipulated source
Details: PH 7.5 / Source: (gene. exp.) Klebsiella aerogenes (bacteria) / Gene: UREA UREB UREC / Plasmid: PKAU17 / Gene (production host): UREA, UREB, UREC / Production host: Escherichia coli (E. coli) / Strain (production host): DH5 / References: UniProt: P18316, urease
#2: Protein UREASE / UREA AMIDOHYDROLASE


Mass: 11712.239 Da / Num. of mol.: 1 / Mutation: K(C 217)KCX, C(C 319)A
Source method: isolated from a genetically manipulated source
Details: PH 7.5 / Source: (gene. exp.) Klebsiella aerogenes (bacteria) / Gene: UREA UREB UREC / Plasmid: PKAU17 / Gene (production host): UREA, UREB, UREC / Production host: Escherichia coli (E. coli) / Strain (production host): DH5 / References: UniProt: P18315, urease
#3: Protein UREASE / UREA AMIDOHYDROLASE


Mass: 60377.289 Da / Num. of mol.: 1 / Mutation: K(C 217)KCX, C(C 319)A
Source method: isolated from a genetically manipulated source
Details: PH 7.5 / Source: (gene. exp.) Klebsiella aerogenes (bacteria) / Gene: UREA UREB UREC / Plasmid: PKAU17 / Gene (production host): UREA, UREB, UREC / Production host: Escherichia coli (E. coli) / Strain (production host): DH5 / References: UniProt: P18314, urease

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Non-polymers , 3 types, 284 molecules

#4: Chemical ChemComp-NI / NICKEL (II) ION


Mass: 58.693 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Ni
#5: Chemical ChemComp-CO3 / CARBONATE ION


Mass: 60.009 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: CO3
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 281 / Source method: isolated from a natural source / Formula: H2O

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Details

Compound detailsTHIS MODEL IS THAT OF THE C319A MUTANT (PH=7.5) AT 2.0 ANGSTROMS. THE ACTIVE SITE IS NEARLY ...THIS MODEL IS THAT OF THE C319A MUTANT (PH=7.5) AT 2.0 ANGSTROMS. THE ACTIVE SITE IS NEARLY IDENTICAL TO THAT OF THE HOLOENZYME (PDB ENTRY 1KAU). THREE NONIDENTICAL CHAINS, GAMMA (A), BETA (B), AND ALPHA (C) FORM ONE (ABC)-UNIT. THE ASYMMETRIC UNIT CONTAINS ONE (ABC)-UNIT. RESIDUES 312 - 336 IN CHAIN C, THE MOBILE ACTIVE SITE FLAP, ARE MORE WELL ORDERED THAN IN THE HOLOENZYME (1KAU). THREE WATERS, 500, 501, AND 502 (FORMERLY WAT-1) ARE LIGATED TO THE ACTIVE SITE NICKEL IONS. THEY MUST BE PARTIALLY OCCUPIED DUE TO CLOSE OXYGEN-OXYGEN DISTANCES BETWEEN THEM. A TEST REFINEMENT WAS CARRIED OUT WITH CARBONATE ION IN PLACE OF WATERS 500, 501, AND 502, RESULTING IN AN R-FACTOR OF 17.0%, BUT POOR GEOMETRY FOR THE CARBONATE-METAL INTERACTIONS. THE COORDINATES FOR THE CARBONATE ARE INCLUDED FOLLOWING CHAIN C, WITH AN OCCUPANCY OF ZERO.

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.49 Å3/Da / Density % sol: 49 %
Crystal grow
*PLUS
Temperature: 25 ℃ / pH: 7 / Method: vapor diffusion, hanging drop / Details: Jabri, E., (1992) J.Mol.Biol., 227, 934.
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDChemical formula
15 mg/mlurease1drop
210 mMTris1drop
30.5 mMEDTA1drop
40.5 mMbeta-mercaptoethanol1drop
50.75-0.85 M1dropLi2SO4
650 mMHEPES1drop
71.5-1.7 M1reservoirLi2SO4
8100 mMHEPES1reservoir

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Data collection

Diffraction sourceWavelength: 1.5418
DetectorType: XUONG-HAMLIN MULTIWIRE / Detector: AREA DETECTOR
RadiationMonochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionNum. obs: 51384 / % possible obs: 94 % / Observed criterion σ(I): 0 / Redundancy: 3.3 % / Rmerge(I) obs: 0.069
Reflection shell
*PLUS
Highest resolution: 2 Å / Lowest resolution: 2.07 Å / % possible obs: 64 % / Redundancy: 2 % / Rmerge(I) obs: 0.279

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Processing

Software
NameVersionClassification
X-PLOR3.1model building
X-PLOR3.1refinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLOR3.1phasing
RefinementResolution: 2→10 Å / σ(F): 0
Details: THE OCCUPANCIES FOR ACTIVE SITE WATERS HOH 500 - HOH 502 WERE REFINED WITH A FIXED B-FACTOR OF 20 ANGSTROMS**2. THE REFINED OCCUPANCIES FOR THESE WATERS SUGGEST NEARLY FULL OCCUPANCY FOR ...Details: THE OCCUPANCIES FOR ACTIVE SITE WATERS HOH 500 - HOH 502 WERE REFINED WITH A FIXED B-FACTOR OF 20 ANGSTROMS**2. THE REFINED OCCUPANCIES FOR THESE WATERS SUGGEST NEARLY FULL OCCUPANCY FOR EACH OF THEM, ALTHOUGH THEY ARE POSITIONED TOO CLOSE (~ 2.0 ANGSTROMS APART) FOR SIMULTANEOUS OCCUPANCY.
RfactorNum. reflection% reflection
Rwork0.169 --
obs0.169 51039 92 %
Refinement stepCycle: LAST / Resolution: 2→10 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5788 0 6 281 6075
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.007
X-RAY DIFFRACTIONx_bond_d_na
X-RAY DIFFRACTIONx_bond_d_prot
X-RAY DIFFRACTIONx_angle_d
X-RAY DIFFRACTIONx_angle_d_na
X-RAY DIFFRACTIONx_angle_d_prot
X-RAY DIFFRACTIONx_angle_deg1.481
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_d_na
X-RAY DIFFRACTIONx_improper_angle_d_prot
X-RAY DIFFRACTIONx_mcbond_it
X-RAY DIFFRACTIONx_mcangle_it
X-RAY DIFFRACTIONx_scbond_it
X-RAY DIFFRACTIONx_scangle_it

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