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NMR structure of the gamma subunit of cGMP phosphodiesterase
SOLUTION NMR
NMR Experiment
Experiment
Type
Sample Contents
Solvent
Ionic Strength
pH
Pressure
Temperature (K)
Spectrometer
1
2D 1H-15N HSQC
0.05 mM [U-100% 15N] PDEgamma
90% H2O/10% D2O
0
4
ambient
298
2
2D 1H-1H TOCSY
0.09 mM [U-100% 13C; U-100% 15N] PDEgamma
90% H2O/10% D2O
0
4
ambient
298
3
3D CBCA(CO)NH
0.09 mM [U-100% 13C; U-100% 15N] PDEgamma
90% H2O/10% D2O
0
4
ambient
298
4
3D HNCACB
0.09 mM [U-100% 13C; U-100% 15N] PDEgamma
90% H2O/10% D2O
0
4
ambient
298
5
2D 1H-1H TOCSY
0.09 mM [U-100% 13C; U-100% 15N] PDEgamma
90% H2O/10% D2O
0
4
ambient
298
6
3D HBHA(CO)NH
0.09 mM [U-100% 13C; U-100% 15N] PDEgamma
90% H2O/10% D2O
0
4
ambient
298
7
3D H(CCO)NH
0.09 mM [U-100% 13C; U-100% 15N] PDEgamma
90% H2O/10% D2O
0
4
ambient
298
8
3D C(CO)NH
0.09 mM [U-100% 13C; U-100% 15N] PDEgamma
90% H2O/10% D2O
0
4
ambient
298
9
3D HNCO
0.09 mM [U-100% 13C; U-100% 15N] PDEgamma
90% H2O/10% D2O
0
4
ambient
298
10
3D HNHA
0.09 mM [U-100% 13C; U-100% 15N] PDEgamma
90% H2O/10% D2O
0
4
ambient
298
11
2D 1H-15N HSQC
0.05 mM [U-15N] PROXYL-PDEgamma
90% H2O/10% D2O
0
4
ambient
298
12
2D 1H-15N HSQC
0.05 mM [U-100% 15N] PROXYL-PDEgamma, 5 mM Ascorbic Acid
93% H2O/7% D2O
0
4
ambient
298
NMR Spectrometer Information
Spectrometer
Manufacturer
Model
Field Strength
1
Bruker
DMX
600
2
Bruker
DMX
750
3
Varian
INOVA
600
NMR Refinement
Method
Details
Software
molecular dynamics, simulated annealing
There are 10272 close contacts in this entry. The deposited structures were calculated using the combined distance restraints derived from ten single PDEgamma mutants (in each mutant a native residue was replaced by the 3-maleimido-PROXYL-cysteine residue). As a result, the deposited structures contain 10 mutated residues which do not coexist in the process of NMR structure determination. To avoid the artificial steric hinderance between individual spin groups, the Van der Waals contacts involving the 2,2,5,5-tetramethyl-1-pyrrolidinyloxy group (but not the maleimide group) are turned off in the structure calculation.
NMRPipe
NMR Ensemble Information
Conformer Selection Criteria
structures with the lowest energy
Conformers Calculated Total Number
200
Conformers Submitted Total Number
100
Representative Model
1 (fewest violations)
Additional NMR Experimental Information
Details
This protein is intrinsically disordered. Because the structures are largely disordered in solution, they contain several different conformational population. Therefore all the structures can not be superimposed.