1L6E

Solution structure of the docking and dimerization domain of protein kinase A II-alpha (RIIalpha D/D). Alternatively called the N-terminal dimerization domain of the regulatory subunit of protein kinase A.

SOLUTION NMR

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NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	DMX	500
2	Bruker	DRX	600

NMR Refinement
Method	Details	Software
Hybrid distance geometry-dynamical simulated annealing and refinement protocol for monomer structure determination, with 457 NOE-derived distance restraints (185 intra-residue, i-j=0; 136 sequential, |i-j|=1; 95 medium range, 1<|i-j|<5; 41 long range, |i-j|>4), 19 distance restraints representing hydrogen bonds (entered as 2 distances each), 25 phi- and 5 chi1-torsion angle restraints. Molecular dynamical simulated annealing protocol for dimer structure determination, using 505 NOE-derived distance restraints (185 intra-residue, i-j=0; 136 sequential, |i-j|=1; 95 medium range, 1<|i-j|<5; 25 long range, |i-j|>4; 38 inter-molecular; 26 ambiguous), 19 distance restraints representing hydrogen bonds (entered as 2 distances each), 25 phi- and 5 chi1-torsion angle restraints.	Filtered NOESY spectrum on a 50% unlabeled-50% 13C-15N-labeled sample was used to obtain inter-molecular NOE contacts of the homodimer. Other NOEs were classified as intra-molecular and ambiguous.	X-PLOR

NMR Ensemble Information
Conformer Selection Criteria	structures with the least restraint violations,structures with the lowest energy
Conformers Calculated Total Number	49
Conformers Submitted Total Number	24
Representative Model	1 (lowest energy)

Additional NMR Experimental Information
Details	This structure was determined using standard homonuclear, heteronuclear, and triple resonance spectroscopy, and 3D 13C-edited(w2)-12C-filtered(w1)/13C-filtered(w3) NOESY.

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	structure solution	X-PLOR	3.851	Brunger, A.T.
2	refinement	X-PLOR	3.851	Brunger, A.T.