2MAX

NMR structure of the RNA polymerase alpha subunit C-terminal domain from Helicobacter pylori

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	1 mM [U-15N] RNAP alpha subunit CTD, 25 mM potassium phosphate, 225 mM potassium chloride, 1 mM TCEP	90% H2O/10% D2O		7.3	ambient	298
2	3D CBCANH	1 mM [U-13C; U-15N] RNAP alpha subunit CTD, 25 mM potassium phosphate, 225 mM potassium chloride, 1 mM TCEP	90% H2O/10% D2O		7.3	ambient	298
3	3D C(CO)NH	1 mM [U-13C; U-15N] RNAP alpha subunit CTD, 25 mM potassium phosphate, 225 mM potassium chloride, 1 mM TCEP	90% H2O/10% D2O		7.3	ambient	298
4	3D H(CCO)NH	1 mM [U-13C; U-15N] RNAP alpha subunit CTD, 25 mM potassium phosphate, 225 mM potassium chloride, 1 mM TCEP	90% H2O/10% D2O		7.3	ambient	298
5	3D HCCH-TOCSY	1 mM [U-13C; U-15N] RNAP alpha subunit CTD, 25 mM potassium phosphate, 225 mM potassium chloride, 1 mM TCEP	90% H2O/10% D2O		7.3	ambient	298

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	600
2	Bruker	AVANCE	800

NMR Refinement
Method	Details	Software
simulated annealing		TopSpin

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	500
Conformers Submitted Total Number	15
Representative Model	1 (closest to the average)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	processing	TopSpin		Bruker Biospin
2	chemical shift assignment	Sparky		Goddard
3	peak picking	Sparky		Goddard
4	structure solution	CYANA		Guntert, Mumenthaler and Wuthrich
5	geometry optimization	TALOS		Cornilescu, Delaglio and Bax
6	refinement	Amber		Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo, ... and Kollman
7	geometry optimization	ProcheckNMR		Laskowski and MacArthur
8	refinement	CYANA		Guntert, Mumenthaler and Wuthrich