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- PDB-1tu0: Aspartate Transcarbamoylase Catalytic Chain Mutant E50A Complex w... -

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Basic information

Entry
Database: PDB / ID: 1tu0
TitleAspartate Transcarbamoylase Catalytic Chain Mutant E50A Complex with Phosphonoacetamide
Components
  • Aspartate carbamoyltransferase catalytic chain
  • Aspartate carbamoyltransferase regulatory chain
KeywordsHYDROLASE/HYDROLASE REGULATOR / protein structure-function / site-specific mutagenesis / domain closure / allosteric transition / HYDROLASE-HYDROLASE REGULATOR COMPLEX
Function / homology
Function and homology information


aspartate carbamoyltransferase complex / pyrimidine nucleotide biosynthetic process / aspartate carbamoyltransferase / aspartate carbamoyltransferase activity / glutamine metabolic process / amino acid binding / protein homotrimerization / 'de novo' UMP biosynthetic process / 'de novo' pyrimidine nucleobase biosynthetic process / zinc ion binding ...aspartate carbamoyltransferase complex / pyrimidine nucleotide biosynthetic process / aspartate carbamoyltransferase / aspartate carbamoyltransferase activity / glutamine metabolic process / amino acid binding / protein homotrimerization / 'de novo' UMP biosynthetic process / 'de novo' pyrimidine nucleobase biosynthetic process / zinc ion binding / identical protein binding / cytosol / cytoplasm
Similarity search - Function
Aspartate transcarbamylase regulatory subunit / Aspartate carbamoyltransferase regulatory subunit, C-terminal / Aspartate carbamoyltransferase regulatory subunit, N-terminal / Aspartate carbamoyltransferase regulatory subunit, C-terminal domain superfamily / Aspartate carbamoyltransferase regulatory subunit, N-terminal domain superfamily / Aspartate carbamoyltransferase regulatory chain, allosteric domain / Aspartate carbamoyltransferase regulatory chain, metal binding domain / Aspartate carbamoyltransferase regulatory subunit, N-terminal domain / Aspartate carbamoyltransferase regulatory subunit, C-terminal domain / Aspartate carbamoyltransferase ...Aspartate transcarbamylase regulatory subunit / Aspartate carbamoyltransferase regulatory subunit, C-terminal / Aspartate carbamoyltransferase regulatory subunit, N-terminal / Aspartate carbamoyltransferase regulatory subunit, C-terminal domain superfamily / Aspartate carbamoyltransferase regulatory subunit, N-terminal domain superfamily / Aspartate carbamoyltransferase regulatory chain, allosteric domain / Aspartate carbamoyltransferase regulatory chain, metal binding domain / Aspartate carbamoyltransferase regulatory subunit, N-terminal domain / Aspartate carbamoyltransferase regulatory subunit, C-terminal domain / Aspartate carbamoyltransferase / Aspartate/ornithine carbamoyltransferase / Aspartate and ornithine carbamoyltransferases signature. / Aspartate/ornithine carbamoyltransferase / Aspartate/ornithine carbamoyltransferase, Asp/Orn-binding domain / Aspartate/ornithine carbamoyltransferase, carbamoyl-P binding / Aspartate/ornithine carbamoyltransferase superfamily / Aspartate/ornithine carbamoyltransferase, Asp/Orn binding domain / Aspartate/ornithine carbamoyltransferase, carbamoyl-P binding domain / SH3 type barrels. / Roll / Alpha-Beta Plaits / Rossmann fold / 2-Layer Sandwich / 3-Layer(aba) Sandwich / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
PHOSPHONOACETAMIDE / Aspartate carbamoyltransferase catalytic subunit / Aspartate carbamoyltransferase regulatory chain
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / MOLECULAR REPLACEMENT / Resolution: 2.55 Å
AuthorsStieglitz, K. / Stec, B. / Baker, D.P. / Kantrowitz, E.R.
CitationJournal: J.Mol.Biol. / Year: 2004
Title: Monitoring the Transition from the T to the R State in E.coli Aspartate Transcarbamoylase by X-ray Crystallography: Crystal Structures of the E50A Mutant Enzyme in Four Distinct Allosteric States.
Authors: Stieglitz, K. / Stec, B. / Baker, D.P. / Kantrowitz, E.R.
History
DepositionJun 23, 2004Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 20, 2004Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Oct 27, 2021Group: Database references / Derived calculations
Category: database_2 / struct_conn ...database_2 / 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 / _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
Revision 1.4Feb 14, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond
Revision 1.5Apr 3, 2024Group: Refinement description / Category: pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Aspartate carbamoyltransferase catalytic chain
B: Aspartate carbamoyltransferase regulatory chain
C: Aspartate carbamoyltransferase catalytic chain
D: Aspartate carbamoyltransferase regulatory chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)103,2548
Polymers102,8454
Non-polymers4094
Water6,377354
1
A: Aspartate carbamoyltransferase catalytic chain
B: Aspartate carbamoyltransferase regulatory chain
C: Aspartate carbamoyltransferase catalytic chain
D: Aspartate carbamoyltransferase regulatory chain
hetero molecules

A: Aspartate carbamoyltransferase catalytic chain
B: Aspartate carbamoyltransferase regulatory chain
C: Aspartate carbamoyltransferase catalytic chain
D: Aspartate carbamoyltransferase regulatory chain
hetero molecules

A: Aspartate carbamoyltransferase catalytic chain
B: Aspartate carbamoyltransferase regulatory chain
C: Aspartate carbamoyltransferase catalytic chain
D: Aspartate carbamoyltransferase regulatory chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)309,76324
Polymers308,53612
Non-polymers1,22712
Water21612
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_655-y+1,x-y,z1
crystal symmetry operation3_665-x+y+1,-x+1,z1
Buried area31440 Å2
ΔGint-124 kcal/mol
Surface area105460 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)122.200, 122.200, 142.700
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number150
Space group name H-MP321
Components on special symmetry positions
IDModelComponents
11A-1338-

HOH

21A-1384-

HOH

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Components

#1: Protein Aspartate carbamoyltransferase catalytic chain / Aspartate transcarbamylase / ATCase


Mass: 34279.074 Da / Num. of mol.: 2 / Mutation: E50A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: PYRB, B4245, C5345, Z5856, ECS5222, SF4245, S4507 / Plasmid: pEK91 / Production host: Escherichia coli (E. coli) / Strain (production host): EK1104 / References: UniProt: P0A786, aspartate carbamoyltransferase
#2: Protein Aspartate carbamoyltransferase regulatory chain


Mass: 17143.625 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: PYRI, B4244, C5344, Z5855, ECS5221 / Plasmid: pEK91 / Production host: Escherichia coli (E. coli) / Strain (production host): EK1104 / References: UniProt: P0A7F3
#3: Chemical ChemComp-PCT / PHOSPHONOACETAMIDE


Mass: 139.047 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C2H6NO4P
#4: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 354 / Source method: isolated from a natural source / Formula: H2O

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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: 2.23 Å3/Da / Density % sol: 44.9 %
Crystal growTemperature: 295 K / pH: 6
Details: The Glu50Ala mutant was crystallized in 100 mM sodium citrate, 1 mM 2-mercaptoethanol, and 15% PEG 8000 pH 7.0. Before mounting, 50 mM PAM was added and the crystal soaked, pH 6.0, ...Details: The Glu50Ala mutant was crystallized in 100 mM sodium citrate, 1 mM 2-mercaptoethanol, and 15% PEG 8000 pH 7.0. Before mounting, 50 mM PAM was added and the crystal soaked, pH 6.0, MICRODIALYSIS, temperature 295K, pH 6.00

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Data collection

DiffractionMean temperature: 298 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418
DetectorType: UCSD MARK III / Detector: AREA DETECTOR / Date: Mar 31, 1998
RadiationMonochromator: GRAPHITE / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.55→30 Å / Num. obs: 37788 / % possible obs: 94 % / Observed criterion σ(I): 2 / Redundancy: 3.8 % / Rmerge(I) obs: 0.085 / Net I/σ(I): 7.37
Reflection shellResolution: 2.55→2.6 Å / Redundancy: 3.5 % / Rmerge(I) obs: 0.36 / Mean I/σ(I) obs: 1.32 / % possible all: 89.53

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Processing

Software
NameClassification
SHELXmodel building
SHELXL-97refinement
SDMSdata reduction
SDMSdata scaling
X-PLORphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: UNPUBLISHED

Resolution: 2.55→30 Å / Num. parameters: 30387 / Num. restraintsaints: 29984 / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: ENGH AND HUBER
Details: GEOMETRY OF STRUCTURES WAS CHECKED AND CORRECTED IN CNS. FINAL RUNS FOR THIS ENTRY WERE CHECKED AGAINST SFCHECK YIELDED R-FACTOR AND R-FREE.
RfactorNum. reflection% reflectionSelection details
Rfree0.279 1990 0.05 %RANDOM
all0.211 37788 --
obs0.19 -94 %-
Refine analyzeNum. disordered residues: 0 / Occupancy sum hydrogen: 0 / Occupancy sum non hydrogen: 7585.11
Refinement stepCycle: LAST / Resolution: 2.55→30 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms7224 0 18 354 7596
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONs_bond_d0.005
X-RAY DIFFRACTIONs_angle_d0.02
X-RAY DIFFRACTIONs_similar_dist0
X-RAY DIFFRACTIONs_from_restr_planes0.021
X-RAY DIFFRACTIONs_zero_chiral_vol0.02
X-RAY DIFFRACTIONs_non_zero_chiral_vol0.027
X-RAY DIFFRACTIONs_anti_bump_dis_restr0.037
X-RAY DIFFRACTIONs_rigid_bond_adp_cmpnt0
X-RAY DIFFRACTIONs_similar_adp_cmpnt0.105
X-RAY DIFFRACTIONs_approx_iso_adps0

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