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- PDB-2f63: Solution structure of HPPK in complex with inhibitor analogs AMPC... -

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Entry
Database: PDB / ID: 2f63
TitleSolution structure of HPPK in complex with inhibitor analogs AMPCPP and HP-1
Components2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase
KeywordsTRANSFERASE / alpha-beta-alpha fold
Function / homology
Function and homology information


2-amino-4-hydroxy-6-hydroxymethyldihydropteridine diphosphokinase / 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine diphosphokinase activity / folic acid biosynthetic process / tetrahydrofolate biosynthetic process / kinase activity / magnesium ion binding / ATP binding
Similarity search - Function
7,8-dihydro-6-hydroxymethylpterin-pyrophosphokinase signature. / 7,8-Dihydro-6-hydroxymethylpterin-pyrophosphokinase HPPK / 7,8-Dihydro-6-hydroxymethylpterin-pyrophosphokinase, HPPK / 7,8-Dihydro-6-hydroxymethylpterin-pyrophosphokinase HPPK superfamily / 7,8-dihydro-6-hydroxymethylpterin-pyrophosphokinase (HPPK) / Alpha-Beta Plaits / 2-Layer Sandwich / Alpha Beta
Similarity search - Domain/homology
2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase
Similarity search - Component
Biological speciesEscherichia coli (E. coli)
MethodSOLUTION NMR / torsion angle dynamics
Model type detailsminimized average
AuthorsYan, H. / Li, G.
CitationJournal: To be Published
Title: Solution structure of HPPK in complex with inhibitor analogs AMPCPP and HP-1
Authors: Yan, H. / Li, G.
History
DepositionNov 28, 2005Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jan 17, 2006Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Mar 9, 2022Group: Data collection / Database references / Derived calculations
Category: database_2 / pdbx_nmr_software ...database_2 / pdbx_nmr_software / pdbx_struct_assembly / pdbx_struct_oper_list
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_nmr_software.name
Revision 1.4May 29, 2024Group: Data collection / Category: chem_comp_atom / chem_comp_bond

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase


Theoretical massNumber of molelcules
Total (without water)17,9671
Polymers17,9671
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
NMR ensembles
DataCriteria
Number of conformers (submitted / calculated)21 / 100structures with the lowest energy
RepresentativeModel #1minimized average structure

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Components

#1: Protein 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase / 7 / 8-dihydro-6-hydroxymethylpterin-pyrophosphokinase / HPPK / 6-hydroxymethyl-7 / 8-dihydropterin ...7 / 8-dihydro-6-hydroxymethylpterin-pyrophosphokinase / HPPK / 6-hydroxymethyl-7 / 8-dihydropterin pyrophosphokinase / PPPK


Mass: 17966.535 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Escherichia coli (E. coli) / Gene: folK / Plasmid: pET17b / Species (production host): Escherichia coli / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3)
References: UniProt: P26281, 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine diphosphokinase

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Experimental details

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Experiment

ExperimentMethod: SOLUTION NMR
NMR experiment
Conditions-IDExperiment-IDSolution-IDType
1113D 15N-separated NOESY
1213D 13C-separated NOESY
NMR detailsText: The structure was determined using triple-resonance NMR spectroscopy

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Sample preparation

DetailsContents: 1.6 mM HPPK,U-15N,13C;20 mM sodium phosphate, pH 7.4; 15mM MgCl2 ,10mM AMPCPP and saturated HP-1(ca 0.5 M); 0.05 mM DSS;5% D2O, 95%H2O.
Solvent system: 5% D2O, 95%H2O
Sample conditionsIonic strength: 20 mM sodium phosphate,15mM MgCl2 / pH: 7.4 / Pressure: ambient / Temperature: 298 K

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NMR measurement

RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M
Radiation wavelengthRelative weight: 1
NMR spectrometerType: Varian INOVA / Manufacturer: Varian / Model: INOVA / Field strength: 600 MHz

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Processing

NMR software
NameVersionDeveloperClassification
VNMR6.1BVariancollection
NMRPipeDelaglioprocessing
NMRView5.0.4Johnsondata analysis
ARIA1.2Lingerefinement
CNS1Brungerstructure solution
RefinementMethod: torsion angle dynamics / Software ordinal: 1
Details: A total of 4953 structurally useful distance restraints were used for the calculation, of which 3557 were unambiguous restraints, 1396 ambiguous.
NMR representativeSelection criteria: minimized average structure
NMR ensembleConformer selection criteria: structures with the lowest energy
Conformers calculated total number: 100 / Conformers submitted total number: 21

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