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- PDB-1obd: SAICAR-synthase complexed with ATP -

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Basic information

Entry
Database: PDB / ID: 1obd
TitleSAICAR-synthase complexed with ATP
ComponentsPHOSPHORIBOSYLAMIDOIMIDAZOLE- SUCCINOCARBOXAMIDE SYNTHASE
KeywordsLIGASE / SYNTHETASE / ATP BINDING PROTEIN / PHOSPHORIBOSYLAMINOIMIDAZOLESUCCINOCARBOXAMIDE (SAICAR) SYNTHASE / PURINE BIOSYNTHESIS
Function / homology
Function and homology information


phosphoribosylaminoimidazolesuccinocarboxamide synthase / phosphoribosylaminoimidazolesuccinocarboxamide synthase activity / purine nucleotide biosynthetic process / 'de novo' IMP biosynthetic process / ATP binding / nucleus / cytoplasm
Similarity search - Function
Phosphoribosylaminoimidazole-succinocarboxamide synthase / SAICAR synthetase signature 1. / SAICAR synthetase signature 2. / SAICAR synthetase, conserved site / SAICAR synthetase/ADE2, N-terminal / SAICAR synthetase / ATP-grasp fold, B domain / D-amino Acid Aminotransferase; Chain A, domain 1 / Phosphorylase Kinase; domain 1 / Phosphorylase Kinase; domain 1 ...Phosphoribosylaminoimidazole-succinocarboxamide synthase / SAICAR synthetase signature 1. / SAICAR synthetase signature 2. / SAICAR synthetase, conserved site / SAICAR synthetase/ADE2, N-terminal / SAICAR synthetase / ATP-grasp fold, B domain / D-amino Acid Aminotransferase; Chain A, domain 1 / Phosphorylase Kinase; domain 1 / Phosphorylase Kinase; domain 1 / 2-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
ADENOSINE MONOPHOSPHATE / ADENOSINE-5'-TRIPHOSPHATE / Phosphoribosylaminoimidazole-succinocarboxamide synthase
Similarity search - Component
Biological speciesSACCHAROMYCES CEREVISIAE (brewer's yeast)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 1.4 Å
AuthorsAntonyuk, S.V. / Grebenko, A.I. / Levdikov, V.M. / Urusova, D.V. / Melik-Adamyan, W.R. / Lamzin, V.S. / Wilson, K.
Citation
#1: Journal: Structure / Year: 1998
Title: The Structure of Saicar Synthase: An Enzyme in the De Novo Pathway of Purine Nucleotide Biosynthesis
Authors: Levdikov, V.M. / Barynin, V.V. / Grebenko, A.I. / Melik-Adamyan, W.R. / Lamzin, V.S. / Wilson, K.S.
History
DepositionJan 30, 2003Deposition site: PDBE / Processing site: PDBE
Revision 1.0Mar 6, 2003Provider: repository / Type: Initial release
Revision 1.1May 8, 2011Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3May 8, 2019Group: Advisory / Data collection ...Advisory / Data collection / Derived calculations / Experimental preparation / Other
Category: database_PDB_rev / database_PDB_rev_record ...database_PDB_rev / database_PDB_rev_record / exptl_crystal_grow / pdbx_database_proc / pdbx_database_status / pdbx_unobs_or_zero_occ_atoms / struct_conn
Item: _exptl_crystal_grow.method / _pdbx_database_status.recvd_author_approval / _struct_conn.pdbx_leaving_atom_flag
Revision 1.4Jul 24, 2019Group: Data collection / Category: diffrn_source / Item: _diffrn_source.pdbx_synchrotron_site
Revision 1.5Dec 13, 2023Group: Advisory / Data collection ...Advisory / Data collection / Database references / Derived calculations / Other / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / pdbx_initial_refinement_model / pdbx_struct_conn_angle / pdbx_unobs_or_zero_occ_atoms / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_database_status.status_code_sf / _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_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_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 / _struct_conn.ptnr2_label_seq_id / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id
Revision 1.6Nov 20, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature
Remark 700 SHEET THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN ORDER TO REPRESENT THIS FEATURE IN ... SHEET THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN ORDER TO REPRESENT THIS FEATURE IN THE SHEET RECORDS BELOW, TWO SHEETS ARE DEFINED.

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: PHOSPHORIBOSYLAMIDOIMIDAZOLE- SUCCINOCARBOXAMIDE SYNTHASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)35,6407
Polymers34,5451
Non-polymers1,0956
Water9,476526
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
MethodPQS
Unit cell
Length a, b, c (Å)61.480, 63.050, 79.820
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

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Protein , 1 types, 1 molecules A

#1: Protein PHOSPHORIBOSYLAMIDOIMIDAZOLE- SUCCINOCARBOXAMIDE SYNTHASE / SAICAR SYNTHETASE


Mass: 34545.238 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) SACCHAROMYCES CEREVISIAE (brewer's yeast)
References: UniProt: P27616, phosphoribosylaminoimidazolesuccinocarboxamide synthase

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Non-polymers , 5 types, 532 molecules

#2: Chemical ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE


Mass: 507.181 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Comment: ATP, energy-carrying molecule*YM
#3: Chemical ChemComp-SO4 / SULFATE ION


Mass: 96.063 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: SO4
#4: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Mg
#5: Chemical ChemComp-AMP / ADENOSINE MONOPHOSPHATE


Mass: 347.221 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H14N5O7P / Comment: AMP*YM
#6: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 526 / Source method: isolated from a natural source / Formula: H2O

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Details

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: 2.2 Å3/Da / Density % sol: 44.8 %
Crystal growMethod: vapor diffusion, hanging drop / pH: 7.5
Details: THE HANGING DROPS CONTAINED PROTEIN AT A CONCENTRATION OF 8 - 15 MG/ML, 50 MM TRIS-HCL BUFFER, PH 7.0, 40 MM ASPARTIC ACID AND 1.0 - 1.25 M AMMONIUM SULPHATE. THE WELL CONTAINED THE SAME ...Details: THE HANGING DROPS CONTAINED PROTEIN AT A CONCENTRATION OF 8 - 15 MG/ML, 50 MM TRIS-HCL BUFFER, PH 7.0, 40 MM ASPARTIC ACID AND 1.0 - 1.25 M AMMONIUM SULPHATE. THE WELL CONTAINED THE SAME ABOVE BUFFER PLUS 2.25 M AMMONIUM SULPHATE
Crystal grow
*PLUS
Method: unknown

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: EMBL/DESY, HAMBURG / Beamline: X11 / Wavelength: 0.906
DetectorType: MARRESEARCH / Detector: IMAGE PLATE / Date: Feb 15, 1998
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.906 Å / Relative weight: 1
ReflectionResolution: 1.4→30 Å / Num. obs: 59985 / % possible obs: 97 % / Redundancy: 3.5 % / Biso Wilson estimate: 16.6 Å2 / Rmerge(I) obs: 0.085 / Net I/σ(I): 17
Reflection shellResolution: 1.4→1.42 Å / Redundancy: 3.5 % / Rmerge(I) obs: 0.19 / Mean I/σ(I) obs: 7 / % possible all: 97.4
Reflection shell
*PLUS
% possible obs: 97.4 %

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Processing

Software
NameClassification
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: PDB ENTRY 1A48

1a48


Resolution: 1.4→30 Å / SU B: 0.775 / SU ML: 0.033 / Cross valid method: THROUGHOUT / ESU R: 0.077 / ESU R Free: 0.069 / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.19471 5989 10.1 %RANDOM
Rwork0.15185 ---
obs0.15621 53449 97 %-
Displacement parametersBiso mean: 15.9 Å2
Baniso -1Baniso -2Baniso -3
1-0.22 Å20 Å20 Å2
2---0.7 Å20 Å2
3---0.48 Å2
Refinement stepCycle: LAST / Resolution: 1.4→30 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2381 0 66 526 2973
Software
*PLUS
Name: REFMAC / Classification: refinement
Refine LS restraints
*PLUS
Refine-IDTypeDev idealWeight
X-RAY DIFFRACTIONp_bond_d0.0170.022
X-RAY DIFFRACTIONp_angle_d
X-RAY DIFFRACTIONp_angle_deg1.8611.997
X-RAY DIFFRACTIONp_plane_restr0.0010.02
X-RAY DIFFRACTIONp_mcbond_it1.5581.5
X-RAY DIFFRACTIONp_scbond_it2.9323
X-RAY DIFFRACTIONp_mcangle_it2.3472
X-RAY DIFFRACTIONp_scangle_it4.3554.5

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