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- PDB-1lcb: LACTOBACILLUS CASEI THYMIDYLATE SYNTHASE TERNARY COMPLEX WITH DTM... -

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Basic information

Entry
Database: PDB / ID: 1lcb
TitleLACTOBACILLUS CASEI THYMIDYLATE SYNTHASE TERNARY COMPLEX WITH DTMP AND H2FOLATE
ComponentsTHYMIDYLATE SYNTHASE
KeywordsTRANSFERASE (METHYLTRANSFERASE) / NUCLEOTIDE SYNTHASE
Function / homology
Function and homology information


thymidylate synthase / thymidylate synthase activity / dTMP biosynthetic process / dTTP biosynthetic process / methylation / cytoplasm
Similarity search - Function
Thymidylate Synthase; Chain A / Thymidylate synthase/dCMP hydroxymethylase domain / Thymidylate synthase/dCMP hydroxymethylase / Thymidylate synthase, active site / Thymidylate synthase active site. / Thymidylate synthase / Thymidylate synthase/dCMP hydroxymethylase domain / Thymidylate synthase/dCMP hydroxymethylase superfamily / Thymidylate synthase / 2-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
DIHYDROFOLIC ACID / THYMIDINE-5'-PHOSPHATE / Thymidylate synthase
Similarity search - Component
Biological speciesLactobacillus casei (bacteria)
MethodX-RAY DIFFRACTION / Resolution: 2.5 Å
AuthorsBirdsall, D.L. / Finer-Moore, J. / Stroud, R.M.
CitationJournal: J.Mol.Biol. / Year: 1993
Title: Refined structures of substrate-bound and phosphate-bound thymidylate synthase from Lactobacillus casei.
Authors: Finer-Moore, J. / Fauman, E.B. / Foster, P.G. / Perry, K.M. / Santi, D.V. / Stroud, R.M.
History
DepositionJun 22, 1995Processing site: BNL
Revision 1.0Oct 15, 1995Provider: repository / Type: Initial release
Revision 1.1Mar 24, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Derived calculations / Version format compliance
Revision 1.3Feb 14, 2024Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Other
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_database_status / 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 / _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: THYMIDYLATE SYNTHASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)37,3963
Polymers36,6301
Non-polymers7662
Water70339
1
A: THYMIDYLATE SYNTHASE
hetero molecules

A: THYMIDYLATE SYNTHASE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)74,7926
Polymers73,2612
Non-polymers1,5314
Water362
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation11_554-x+y,y,-z-1/21
Buried area7640 Å2
ΔGint-29 kcal/mol
Surface area25100 Å2
MethodPISA, PQS
Unit cell
Length a, b, c (Å)78.600, 78.600, 229.400
Angle α, β, γ (deg.)90.00, 90.00, 120.00
Int Tables number178
Space group name H-MP6122
Atom site foot note1: ASP 111 - PRO 112 OMEGA = 255.40 PEPTIDE BOND DEVIATES SIGNIFICANTLY FROM TRANS CONFORMATION
2: LEU 195 - PRO 196 OMEGA = 145.03 PEPTIDE BOND DEVIATES SIGNIFICANTLY FROM TRANS CONFORMATION

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Components

#1: Protein THYMIDYLATE SYNTHASE / / TS / LCTS


Mass: 36630.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Lactobacillus casei (bacteria) / References: UniProt: P00469, thymidylate synthase
#2: Chemical ChemComp-TMP / THYMIDINE-5'-PHOSPHATE


Mass: 322.208 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H15N2O8P
#3: Chemical ChemComp-DHF / DIHYDROFOLIC ACID / Dihydrofolic acid


Mass: 443.413 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C19H21N7O6
#4: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 39 / 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: 2.79 Å3/Da / Density % sol: 55.93 %
Crystal grow
*PLUS
pH: 6.8 / Method: vapor diffusion, hanging drop / Details: Hardy, L.W., (1987) Science, 235, 448.
Components of the solutions
*PLUS
IDConc.Common nameCrystal-IDSol-IDDetails
110 mg/mlthymidylate synthase1drop
220 mMpotassium phosphate1drop
320 mMpotassium phosphate1reservoir
415-20 mMammonium sulfate1reservoir
55 mMdUMP1reservoirwith or without

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Data collection

Diffraction sourceWavelength: 1.5418 Å
DetectorType: RIGAKU / Detector: IMAGE PLATE / Date: Apr 7, 1994
RadiationMonochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.5418 Å / Relative weight: 1
ReflectionResolution: 2.48→58.7 Å / Num. obs: 8244 / % possible obs: 51.9 % / Observed criterion σ(I): 1 / Redundancy: 1.512 % / Rmerge(I) obs: 0.196
Reflection
*PLUS
Rmerge(I) obs: 0.196

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Processing

Software
NameVersionClassification
X-PLOR3.1model building
X-PLOR3.1refinement
R-AXISdata reduction
X-PLOR3.1phasing
RefinementResolution: 2.5→15 Å / σ(F): 1.7
RfactorNum. reflection% reflection
Rwork0.204 --
obs0.204 8043 52.6 %
Displacement parametersBiso mean: 5.5 Å2
Refinement stepCycle: LAST / Resolution: 2.5→15 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms2590 0 53 39 2682
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_bond_d0.028
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_deg5.02
X-RAY DIFFRACTIONx_angle_deg_na
X-RAY DIFFRACTIONx_angle_deg_prot
X-RAY DIFFRACTIONx_dihedral_angle_d27.8
X-RAY DIFFRACTIONx_dihedral_angle_d_na
X-RAY DIFFRACTIONx_dihedral_angle_d_prot
X-RAY DIFFRACTIONx_improper_angle_d2.05
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 / Version: 3.1 / Classification: refinement
Refine LS restraints
*PLUS
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONx_dihedral_angle_d
X-RAY DIFFRACTIONx_dihedral_angle_deg27.8
X-RAY DIFFRACTIONx_improper_angle_d
X-RAY DIFFRACTIONx_improper_angle_deg2.05

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