2KZ8

Solution NMR structure of MqsA, a protein from E. coli, containing a Zinc finger, N-terminal and a Helix Turn-Helix C-terminal domain

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	2D 1H-15N HSQC	1mM [U-100% 13C; U-100% 15N] Ygit	95% H2O/5% D2O	25	5	0.7 atm	37
2	3D HNCA	1mM [U-100% 13C; U-100% 15N] Ygit	95% H2O/5% D2O	25	5	0.7 atm	37
3	3D HNCACB	1mM [U-100% 13C; U-100% 15N] Ygit	95% H2O/5% D2O	25	5	0.7 atm	37
4	3D HNCO	1mM [U-100% 13C; U-100% 15N] Ygit	95% H2O/5% D2O	25	5	0.7 atm	37
5	3D CBCA(CO)NH	1mM [U-100% 13C; U-100% 15N] Ygit	95% H2O/5% D2O	25	5	0.7 atm	37
6	3D HBHA(CO)NH	1mM [U-100% 13C; U-100% 15N] Ygit	95% H2O/5% D2O	25	5	0.7 atm	37
7	3D C(CO)NH	1mM [U-100% 13C; U-100% 15N] Ygit	95% H2O/5% D2O	25	5	0.7 atm	37
8	3D H(CCO)NH	1mM [U-100% 13C; U-100% 15N] Ygit	95% H2O/5% D2O	25	5	0.7 atm	37

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Varian	INOVA	800

NMR Refinement
Method	Details	Software
simulated annealing	3 7 CYCLES OF CYANA - CANDID. A) KEEPING MANUAL ASSIGNEMENTS B) ALLOWING MANUAL ASSIGNEMENTS TO VARIATE C) ADDING EXTRA CSVALUES FROM STATISTICAL TABLES. IF THE N-TERMINUS DOMAIN IS ALIGNED IT LOOKS STRUCTURED AND THE C-TERMINUS ROTATES. THE TWO ALIGNMENTS GIVE A SOMEHOW DIFFERENT IMPRESSION ABOUT THE PROTEIN AND VERIFY THAT EACH DOMAIN IS INDIVIDUALLY STRUCTURED. THERE ARE TWO B-SHEETS ONE WITH 4 STRANDS AND ONE WITH TWO LONG STRANDS. THE 4 STRANDS MIGHT BELONG TO THE SAME SHEET OR THEY MAY BE TWO TIMES TWO STRANDS OR A SMALL B-BARREL. THEY BIND AND THEY ARE STABILIZED BY ZN.	SPARKY

NMR Ensemble Information
Conformer Selection Criteria	structures with acceptable covalent geometry
Conformers Calculated Total Number	100
Conformers Submitted Total Number	20
Representative Model	1 (fewest violations)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	chemical shift assignment	SPARKY		Goddard
2	refinement	CYANA	3.1

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.