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- PDB-2a0f: Structure of D236A mutant E. coli Aspartate Transcarbamoylase in ... -

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Basic information

Entry
Database: PDB / ID: 2a0f
TitleStructure of D236A mutant E. coli Aspartate Transcarbamoylase in presence of Phosphonoacetamide at 2.90 A resolution
Components
  • Aspartate carbamoyltransferase catalytic chain
  • Aspartate carbamoyltransferase regulatory chain
Keywordstransferase/transferase regulator / homotropic cooperativity / catalytic cycle / allosteric regulation / Alternate conformations / transferase-transferase 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: 2.9 Å
AuthorsStieglitz, K.A. / Dusinberre, K.J. / Cardia, J.P. / Tsuruta, H. / Kantrowitz, E.R.
CitationJournal: J.Mol.Biol. / Year: 2005
Title: Structure of the E.coli Aspartate Transcarbamoylase Trapped in the Middle of the Catalytic Cycle.
Authors: Stieglitz, K.A. / Dusinberre, K.J. / Cardia, J.P. / Tsuruta, H. / Kantrowitz, E.R.
History
DepositionJun 16, 2005Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 27, 2005Provider: repository / Type: Initial release
Revision 1.1Apr 30, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 11, 2017Group: Refinement description / Category: software
Revision 1.4Oct 20, 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 1.5Aug 23, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Revision 1.6Nov 13, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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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)103,1437
Polymers102,8734
Non-polymers2703
Water6,828379
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)309,43021
Polymers308,62012
Non-polymers8109
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
Unit cell
Length a, b, c (Å)120.452, 120.452, 155.242
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number150
Space group name H-MP321

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Components

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


Mass: 34293.098 Da / Num. of mol.: 2 / Mutation: D236A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: pyrB / Plasmid: pEK152 / 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 / Plasmid: pEK114 / 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.: 1 / 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.: 379 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationY

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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: 3.7 Å3/Da / Density % sol: 67 %
Crystal growTemperature: 298 K / Method: microdialysis / pH: 5.7
Details: maleic acid, sodium azide, phosphonoacetamide, pH 5.7, MICRODIALYSIS, temperature 298K

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Data collection

DiffractionMean temperature: 97 K
Diffraction sourceSource: ROTATING ANODE / Type: RIGAKU RU200 / Wavelength: 1.5418 Å
DetectorType: RIGAKU RAXIS IV / Detector: IMAGE PLATE / Date: Dec 16, 2004
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.9→30 Å / Num. all: 29423 / Num. obs: 26586 / % possible obs: 90.4 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 4.36 % / Rmerge(I) obs: 0.088 / Net I/σ(I): 11
Reflection shellResolution: 2.9→3 Å / Redundancy: 4 % / Rmerge(I) obs: 0.4 / Num. unique all: 2900 / % possible all: 90

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Processing

Software
NameClassification
CNSrefinement
CNSphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB code 8AT1

8at1


Resolution: 2.9→30 Å / σ(F): 2 / Stereochemistry target values: Engh & Huber
RfactorNum. reflectionSelection details
Rfree0.279 2658 RANDOM
Rwork0.217 --
all0.217 29423 -
obs0.217 26586 -
Refinement stepCycle: LAST / Resolution: 2.9→30 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms7100 0 10 379 7489

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