2FKW

Structure of LH2 from Rps. acidophila crystallized in lipidic mesophases

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8	293	200 microlitres of 40 %(w/w) protein, 0.05 %(w/v) LDAO, 20mM Tris/HCl and 60 %(w/w) monoolein mixed with 2 microlitres of precipitant: 20 %(w/v) pentaerythritol propoxylate, 0.1 M potassium formate, 0.1 M Tris/HCl, pH 8.0, Mesophase crystallization, lipidic cubic phase, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.61	65.95

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 81.443	α = 90
b = 126.384	β = 90
c = 129.705	γ = 90

Symmetry
Space Group	P 21 21 21

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	ADSC QUANTUM 4			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F1	0.9124	CHESS	F1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.449	90.536	99.8	0.066	20.9	3.9	49999	49795

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.45	2.54	98.25		0.568	2.3	3.7	3208

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1NKZ	2.45	10	49999	48989	2498	99.78	0.18651	0.18282	0.25367	RANDOM	41.842

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]
2.97			-4.14		1.17

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.173
r_dihedral_angle_3_deg	18.044
r_dihedral_angle_4_deg	10.639
r_dihedral_angle_1_deg	8.963
r_scangle_it	4.217
r_scbond_it	2.866
r_mcangle_it	2.016
r_angle_refined_deg	1.414
r_mcbond_it	1.26
r_angle_other_deg	0.849
r_chiral_restr	0.784
r_metal_ion_refined	0.382
r_xyhbond_nbd_refined	0.353
r_nbd_refined	0.334
r_symmetry_hbond_refined	0.325
r_mcbond_other	0.319
r_nbd_other	0.247
r_symmetry_vdw_refined	0.232
r_nbtor_refined	0.195
r_symmetry_vdw_other	0.175
r_nbtor_other	0.101
r_bond_refined_d	0.03
r_gen_planes_other	0.019
r_gen_planes_refined	0.015
r_bond_other_d	0.005
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6534
Nucleic Acid Atoms
Solvent Atoms	613
Heterogen Atoms	2682

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
MOLREP	phasing