3MW2

Crystal structure of beta-neurexin 1 with the splice insert 4

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.9	293	26% PEG1000, 0.2M lithium sulfate, 0.1M phosphate-citrate, pH 4.9, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.9	57.53

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 85.89	α = 90
b = 59.819	β = 103.86
c = 105.697	γ = 90

Symmetry
Space Group	C 1 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		CCD	MAR CCD 165 mm	Si (111) crystal monochromator with vertical focusing mirror	2009-06-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4C	0.9795	NSLS	X4C

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	2.7	50	78.3	0.09	0.09	19.7	3.6	18319	14339	1	1

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	PDB ID 3BOD	2.69	20	14286	13752	739	99.02	0.21	0.21016	0.2058	0.28724	RANDOM	35.836

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]
0.64		-0.91	0.97		-2.05

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.204
r_dihedral_angle_3_deg	17.007
r_dihedral_angle_4_deg	15.592
r_dihedral_angle_1_deg	6.661
r_scangle_it	1.832
r_angle_refined_deg	1.234
r_scbond_it	1.031
r_mcangle_it	0.736
r_mcbond_it	0.407
r_nbtor_refined	0.306
r_symmetry_vdw_refined	0.202
r_nbd_refined	0.2
r_symmetry_hbond_refined	0.196
r_xyhbond_nbd_refined	0.154
r_chiral_restr	0.076
r_bond_refined_d	0.008
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3041
Nucleic Acid Atoms
Solvent Atoms	148
Heterogen Atoms	83

Software

Software
Software Name	Purpose
MAR345	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling