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- PDB-1raa: CRYSTAL STRUCTURE OF CTP-LIGATED T STATE ASPARTATE TRANSCARBAMOYL... -

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Basic information

Entry
Database: PDB / ID: 1raa
TitleCRYSTAL STRUCTURE OF CTP-LIGATED T STATE ASPARTATE TRANSCARBAMOYLASE AT 2.5 ANGSTROMS RESOLUTION: IMPLICATIONS FOR ATCASE MUTANTS AND THE MECHANISM OF NEGATIVE COOPERATIVITY
Components
  • Aspartate carbamoyltransferase catalytic chain
  • Aspartate carbamoyltransferase regulatory chain
KeywordsTRANSFERASE
Function / homology
Function and homology information


aspartate carbamoyltransferase complex / pyrimidine nucleotide biosynthetic process / aspartate carbamoyltransferase / aspartate carbamoyltransferase activity / amino acid binding / glutamine metabolic process / 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 / amino acid binding / glutamine metabolic process / 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/ornithine 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/ornithine carbamoyltransferase / Aspartate 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
CYTIDINE-5'-TRIPHOSPHATE / Aspartate carbamoyltransferase catalytic subunit / Aspartate carbamoyltransferase regulatory chain
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodX-RAY DIFFRACTION / Resolution: 2.5 Å
AuthorsKosman, R.P. / Gouaux, J.E. / Lipscomb, W.N.
Citation
Journal: Proteins / Year: 1993
Title: Crystal structure of CTP-ligated T state aspartate transcarbamoylase at 2.5 A resolution: implications for ATCase mutants and the mechanism of negative cooperativity.
Authors: Kosman, R.P. / Gouaux, J.E. / Lipscomb, W.N.
#1: Journal: Biochemistry / Year: 1990
Title: Structural Consequences of Effector Binding to the T State of Aspartate Carbamoyltransferase: Crystal Structures of the Unligated and ATP-and Ctp-Complexed Enzymes at 2.6 Angstroms Resolution
Authors: Stevens, R.C. / Gouaux, J.E. / Lipscomb, W.N.
#2: Journal: J.Mol.Biol. / Year: 1987
Title: Structural Asymmetry in the Ctp-Liganded Form of Aspartate Carbamoyltransferase from Escherichia Coli
Authors: Kim, K.H. / Pan, Z. / Honzatko, R.B. / Ke, H.-M. / Lipscomb, W.N.
#3: Journal: Proc.Natl.Acad.Sci.USA / Year: 1984
Title: Location of Amino Acid Alterations in Mutants of Aspartate Transcarbamoylase: Structural Aspects of Interallelic Complementation
Authors: Schachman, H.K. / Pauza, C.D. / Navre, M. / Karels, M.J. / Wu, L. / Yang, Y.R.
#4: Journal: Proc.Natl.Acad.Sci.USA / Year: 1983
Title: Nucleotide Sequence of the Structural Gene (Pyrb) that Encodes the Catalytic Polypeptide of Aspartate Transcarbamoylase of Escherichia Coli
Authors: Hoover, T.A. / Roof, W.D. / Foltermann, K.F. / O'Donovan, G.A. / Bencini, D.A. / Wild, J.R.
#5: Journal: Proc.Natl.Acad.Sci.USA / Year: 1983
Title: Amino Acid Sequence of the Catalytic Subunit of Aspartate Transcarbamoylase from Escherichia Coli
Authors: Konigsberg, W.H. / Henderson, L.
History
DepositionAug 14, 1992Processing site: BNL
Revision 1.0Jan 31, 1994Provider: repository / Type: Initial release
Revision 1.1Mar 3, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Jul 2, 2014Group: Database references / Source and taxonomy
Revision 1.4Nov 29, 2017Group: Derived calculations / Other
Category: pdbx_database_status / struct_conf / struct_conf_type
Item: _pdbx_database_status.process_site
Revision 1.5Feb 14, 2024Group: Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_struct_conn_angle / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _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_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: 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)104,0598
Polymers102,9614
Non-polymers1,0974
Water1,67593
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)312,17624
Polymers308,88412
Non-polymers3,29112
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 area35860 Å2
ΔGint-90 kcal/mol
Surface area106960 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)122.130, 122.130, 142.510
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number150
Space group name H-MP321
Atom site foot note1: CIS PROLINE - PRO A 268 / 2: CIS PROLINE - PRO C 268

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Components

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


Mass: 34337.105 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Strain: K12 / Gene: pyrB, b4245, JW4204 / 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) / Strain: K12 / Gene: pyrI, b4244, JW4203 / References: UniProt: P0A7F3
#3: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn
#4: Chemical ChemComp-CTP / CYTIDINE-5'-TRIPHOSPHATE


Mass: 483.156 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C9H16N3O14P3
#5: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 93 / Source method: isolated from a natural source / Formula: H2O
Sequence detailsTHE AMINO ACID SEQUENCE OF ESCHERICHIA COLI ATCASE USED IN THIS ENTRY REPRESENTS A DEPARTURE FROM ...THE AMINO ACID SEQUENCE OF ESCHERICHIA COLI ATCASE USED IN THIS ENTRY REPRESENTS A DEPARTURE FROM THE SEQUENCE USED IN PREVIOUS ATCASE STRUCTURES FROM THE SAME LABORATORY. THE NEW AMINO ACID ASSIGNMENTS FOR FIVE OF THE RESIDUES IN EACH CATALYTIC-REGULATORY SUBUNIT ARE NOW IN ACCORD WITH THE DNA-DETERMINED AMINO ACID SEQUENCE MOST RECENTLY DEFINED FOR THIS ENZYME. THE CHANGES ARE AS FOLLOWS: PREVIOUS PRESENT GLN A 60 GLU A 60 GLN A 147 GLU A 147 GLU A 149 GLN A 149 GLU A 196 GLN A 196 GLY B 8 GLN B 8 GLN C 60 GLU C 60 GLN C 147 GLU C 147 GLU C 149 GLN C 149 GLU C 196 GLN C 196 GLY D 8 GLN D 8 GLN 8 IS THE ONLY RESIDUE WHICH INVOLVED MORE THAN A SINGLE ATOM CHANGE AND, AS A RESULT, IT IS THE ONLY RESIDUE IN THIS LIST WHICH REQUIRED A REEXAMINATION OF THE CRYSTALLOGRAPHIC DATA IN ADDITION TO THE REEXAMINATION OF THE CHEMICAL ENVIRONMENT THAT WAS PERFORMED FOR ALL OF THESE RESIDUES. OMIT MAPS BASED ON THE CTP-LIGATED ENZYME DATA (SEE PAPER CITED ON *JRNL* RECORDS ABOVE) WERE CREATED, AND IN BOTH RESIDUES WITHIN THE ASYMMETRIC UNIT (GLN B 8 AND GLN D 8) ELECTRON DENSITY CONSISTENT WITH THE GLUTAMINE SIDE CHAINS WAS IDENTIFIED, ALTHOUGH IT WAS NOT POSSIBLE TO POSITION THE SIDE CHAINS WITH CERTAINTY IN THIS ELECTRON DENSITY. CONSEQUENTLY, GLN 8 IS IDENTIFIED PROPERLY AS A GLUTAMINE BUT IT LACKS THE SIDE CHAIN ATOMS. THERE IS STILL AN UNRESOLVED CONFLICT IN THE LITERATURE REGARDING THE IDENTITY OF RESIDUE 220 OF THE CATALYTIC CHAIN (SEE THE PAPERS CITED AS REFERENCES 3 - 5 ABOVE). SINCE THERE WAS NO UNEQUIVOCAL CRYSTALLOGRAPHIC EVIDENCE FOR A VALINE AT THIS POSITION (REFERENCES 4 AND 5), ALA (REFERENCE 3) WAS LEFT IN THIS SITE.

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION

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Sample preparation

CrystalDensity Matthews: 2.98 Å3/Da / Density % sol: 58.71 %
Crystal grow
*PLUS
pH: 5.8 / Method: microdialysis
Details: taken from Gouaux, J. E. et al (1989). Biochemistry, 28, 1798-1803.
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-ID
120 mg/mlenzyme11
240 mMsodium citrate12
31.0 mMbeta-mercaptoethanol12
40.2 mMEDTA12
51.0 mMcytidine 5'-triphosphate12

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Data collection

RadiationScattering type: x-ray
Radiation wavelengthRelative weight: 1
Reflection
*PLUS
Highest resolution: 2.5 Å / Lowest resolution: 10 Å / Num. obs: 35204 / % possible obs: 82 % / Observed criterion σ(I): 2 / Num. measured all: 169691 / Rmerge(I) obs: 0.097

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Processing

Software
NameClassification
X-PLORmodel building
X-PLORrefinement
X-PLORphasing
RefinementRfactor Rwork: 0.191 / Rfactor obs: 0.191 / Highest resolution: 2.5 Å
Refinement stepCycle: LAST / Highest resolution: 2.5 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms7222 0 60 93 7375
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.018
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_deg3.742
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
Software
*PLUS
Name: X-PLOR / Classification: refinement
Refinement
*PLUS
Rfactor obs: 0.191
Solvent computation
*PLUS
Displacement parameters
*PLUS
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_angle_d3.742
X-RAY DIFFRACTIONx_dihedral_angle_d26.736
X-RAY DIFFRACTIONx_improper_angle_d1.769

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