2LM5

Solution structure of Ca2+-CIB1 in complex with the cytoplasmic domain of the integrin aIIb subunit

SOLUTION NMR

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NMR Experiment
Experiment	Type	Sample Contents	Solvent	Ionic Strength	pH	Pressure	Temperature (K)	Spectrometer
1	3D HNCACB	0.5 mM [U-13C; U-15N; U-2H] CIB1, 5 mM [U-2H] DTT, 2 mM CALCIUM ION, 100 mM sodium chloride, 50 mM HEPES, 0.6 mM aIIb peptide	90% H2O/10% D2O	0.2	7.5	ambient	310
2	3D HNCO	0.5 mM [U-13C; U-15N; U-2H] CIB1, 5 mM [U-2H] DTT, 2 mM CALCIUM ION, 100 mM sodium chloride, 50 mM HEPES, 0.6 mM aIIb peptide	90% H2O/10% D2O	0.2	7.5	ambient	310
3	3D HCACO	0.5 mM [U-13C; U-15N; U-2H] CIB1, 5 mM [U-2H] DTT, 2 mM CALCIUM ION, 100 mM sodium chloride, 50 mM HEPES, 0.6 mM aIIb peptide	90% H2O/10% D2O	0.2	7.5	ambient	310
4	3D HN(COCA)CB	0.5 mM [U-13C; U-15N; U-2H] CIB1, 5 mM [U-2H] DTT, 2 mM CALCIUM ION, 100 mM sodium chloride, 50 mM HEPES, 0.6 mM aIIb peptide	90% H2O/10% D2O	0.2	7.5	ambient	310
5	3D HNCO type RDC	0.5 mM [U-13C; U-15N; U-2H] CIB1, 5 mM [U-2H] DTT, 2 mM CALCIUM ION, 100 mM sodium chloride, 50 mM HEPES, 0.6 mM aIIb peptide, 14 mg/mL pf1 phage	90% H2O/10% D2O	0.2	7.5	ambient	310
6	2D 1H-15N HSQC IPAP	0.5 mM [U-13C; U-15N; U-2H] CIB1, 5 mM [U-2H] DTT, 2 mM CALCIUM ION, 100 mM sodium chloride, 50 mM HEPES, 0.6 mM aIIb peptide, 14 mg/mL pf1 phage	90% H2O/10% D2O	0.2	7.5	ambient	310
7	3D HCCH-TOCSY	0.5 mM [U-13C; U-2H], I/L/V methyl [1H,13C] CIB1, 5 mM [U-2H] DTT, 2 mM CALCIUM ION, 100 mM sodium chloride, 50 mM HEPES, 0.6 mM aIIb peptide	100% D2O	0.2	7.5	ambient	310
8	2D 1H-13C HSQC	0.5 mM [U-10% 13C] CIB1, 5 mM [U-2H] DTT, 2 mM CALCIUM ION, 100 mM sodium chloride, 50 mM HEPES, 0.6 mM aIIb peptide	100% D2O	0.2	7.5	ambient	310
9	3D HNCO type RDC	0.5 mM [U-13C; U-15N; U-2H] CIB1, 5 mM [U-2H] DTT, 2 mM CALCIUM ION, 100 mM sodium chloride, 50 mM HEPES, 0.6 mM aIIb peptide, 5 % C12E5/glycerol (0.96/1)	90% H2O/10% D2O	0.2	7.5	ambient	310

NMR Spectrometer Information
Spectrometer	Manufacturer	Model	Field Strength
1	Bruker	AVANCE	700
2	Bruker	AVANCE	600
3	Bruker	AVANCE	500

NMR Refinement
Method	Details	Software
simulated annealing	two steps: 1st step, 200K->20K; 2nd step, 20K->2K. For the 1st step, use ca2+-CIB1 (PDB: 2L4H) as a template and for the 2nd step, use the lowest-energy str. from step1 as the template	NMRDraw

NMR Ensemble Information
Conformer Selection Criteria	structures with the lowest RDC 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	processing	NMRDraw		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
2	processing	NMRPipe		Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax
3	data analysis	NMRView		Johnson, One Moon Scientific
4	chemical shift assignment	NMRView		Johnson, One Moon Scientific
5	refinement	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore
6	structure solution	X-PLOR NIH		Schwieters, Kuszewski, Tjandra and Clore