Experiment: 2OII

SOLUTION NMR

NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D 15N-NOESY-HSQC	0.6 mM of C1q U-13C, U-15N and U-80% 2H, 20 mM Phosphate buffer, 100 mM NaCl, 0.02%(w/v)NaN3, 95% H2O, 5% D2O	95% H2O/5% D2O	20 mM Phosphate buffer, 100 mM NaCl	7.5	1 atm	310
2	IPAP 1H,15N-HSQC	0.6 mM of C1q U-13C, U-15N and U-80% 2H, 20 mM Phosphate buffer, 100 mM NaCl, 0.02%(w/v)NaN3 in polyacrylamide gel (acrylamide:bisacrylamide = 4%:3%), 95% H2O, 5% D2O	95% H2O/5% D2O	20 mM Phosphate buffer, 100 mM NaCl	7.5	1 atm	310
3	TROSY 1H-15N HSQC	0.6 mM of C1q U-13C, U-15N and U-80% 2H, 20 mM Phosphate buffer, 100 mM NaCl, 0.02%(w/v)NaN3 in polyacrylamide gel (acrylamide:bisacrylamide = 4%:3%), 95% H2O, 5% D2O	95% H2O/5% D2O	20 mM Phosphate buffer, 100 mM NaCl	7.5	1 atm	310
4	3D HNCO	0.6 mM of C1q U-13C, U-15N and U-80% 2H, 20 mM Phosphate buffer, 100 mM NaCl, 0.02%(w/v)NaN3 in polyacrylamide gel (acrylamide:bisacrylamide = 4%:3%), 95% H2O, 5% D2O	95% H2O/5% D2O	20 mM Phosphate buffer, 100 mM NaCl	7.5	1 atm	310

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	GE	OMEGA	500
2	GE	OMEGA	600
3	GE	OMEGA	750
4	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
simulated annealing	The structure was obtained as the refinement of the homology model of emilin trimer C1q-domain based on the chain A of ACRP-30 crystal structure. The quaternary structure of C1q-domain homology model was built with a three-fold simmetry axis. The region between Tyr927 and Gly945 was not modelled and was not included in the refinement. Dihedral angles (obtained with TALOS), RDC values, NOE constraints were used in the refinement procedure.	XwinNMR

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest energy
Conformers Calculated Total Number	100
Conformers Submitted Total Number	10
Representative Model	1 (lowest energy)

Computation: NMR Software
#	Classification	Version	Software Name	Author
1	collection	XwinNMR	2.0	Bruker
2	data analysis	Felix	2.3	Accelrys
3	data analysis	XEASY	1.2	Bartels, C. et al.
4	data analysis	Sparky	3.106	Goddard, T.D. et al.
5	refinement	X-PLOR	2.9.9	Nilges, M.

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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 R01GM157729.