2G4N

Anomalous substructure of alpha-lactalbumin

X-RAY DIFFRACTION

---

Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.51	50.91

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 68.43	α = 90
b = 104.8	β = 90
c = 119.11	γ = 90

Symmetry
Space Group	P 21 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	MARRESEARCH		2005-01-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X12	2.00	EMBL/DESY, HAMBURG	X12

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.3	30					35381

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	THROUGHOUT	2.3	30	34659	722	91.25	0.29731	0.29597	0.35933	RANDOM	36.847

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]
-1.06			2.82		-1.76

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.257
r_dihedral_angle_4_deg	32.394
r_dihedral_angle_3_deg	19.183
r_dihedral_angle_1_deg	8.834
r_scangle_it	6.844
r_scbond_it	4.987
r_angle_refined_deg	2.053
r_mcangle_it	1.939
r_angle_other_deg	1.174
r_mcbond_it	1.031
r_symmetry_vdw_refined	0.36
r_mcbond_other	0.287
r_nbd_refined	0.251
r_symmetry_vdw_other	0.249
r_symmetry_metal_ion_refined	0.248
r_symmetry_hbond_refined	0.234
r_metal_ion_refined	0.197
r_nbd_other	0.188
r_nbtor_refined	0.185
r_xyhbond_nbd_refined	0.183
r_xyhbond_nbd_other	0.152
r_chiral_restr	0.138
r_nbtor_other	0.098
r_bond_refined_d	0.029
r_bond_other_d	0.012
r_gen_planes_refined	0.008
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5856
Nucleic Acid Atoms
Solvent Atoms	74
Heterogen Atoms	8

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
CCP4	data scaling
FFT	phasing