3EWT

Crystal Structure of calmodulin complexed with a peptide

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1L7Z

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	EVAPORATION	5.5	293	25%(w/v) PEG8000, 0.2M Sodium Acetate, 0.1M Sodium cacodylate, pH 5.5, EVAPORATION, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2	38.35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 40.062	α = 90
b = 40.062	β = 90
c = 174.431	γ = 120

Symmetry
Space Group	P 32 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	113	IMAGE PLATE	RIGAKU RAXIS IV++		2006-09-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.4	20	99.6	0.042	0.041		8.6		6946	2	2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.4	2.46	97.3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1L7Z	2.4	19.9	6575	6575	312	99.8	0.21859	0.21859	0.21664	0.25916	RANDOM	35.709

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
0.73	0.36		0.73		-1.09

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.661
r_dihedral_angle_3_deg	20.238
r_dihedral_angle_4_deg	16.376
r_dihedral_angle_1_deg	5.293
r_scangle_it	3.023
r_scbond_it	1.7
r_mcangle_it	1.499
r_angle_refined_deg	1.384
r_mcbond_it	0.916
r_nbtor_refined	0.301
r_symmetry_vdw_refined	0.268
r_nbd_refined	0.24
r_symmetry_hbond_refined	0.185
r_xyhbond_nbd_refined	0.128
r_chiral_restr	0.11
r_metal_ion_refined	0.097
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1227
Nucleic Acid Atoms
Solvent Atoms	44
Heterogen Atoms	4

Software

Software
Software Name	Purpose
CrystalClear	data collection
MOLREP	phasing
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling