6LOV

crystal structure of alpha-momorcharin in complex with xanthosine

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	0.2 M Magnesium Acetate, 20% PEG 8000, 0.1 M Sodium cacodylate, pH 6.5

Crystal Properties
Matthews coefficient	Solvent content
2.06	40.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 130.53	α = 90
b = 130.53	β = 90
c = 39.737	γ = 120

Symmetry
Space Group	H 3

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	MARMOSAIC 300 mm CCD		2007-12-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.0	APS	22-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	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	1.349	50	94.1	0.077	0.987	8.9	3.2		52296

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.35	1.4			0.745	0.658	2.3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1F8Q	1.35	18.847	52296	2608	93.971	0.232	0.2308	0.2585	26.356

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]
-0.817	-0.409		-0.817		2.651

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.648
r_dihedral_angle_4_deg	22.44
r_dihedral_angle_3_deg	13.099
r_dihedral_angle_1_deg	5.924
r_lrange_it	5.278
r_lrange_other	4.953
r_scangle_it	2.489
r_scangle_other	2.488
r_angle_refined_deg	1.703
r_mcangle_it	1.68
r_mcangle_other	1.68
r_scbond_it	1.624
r_scbond_other	1.624
r_angle_other_deg	1.421
r_mcbond_it	1.099
r_mcbond_other	1.097
r_symmetry_nbd_refined	0.333
r_nbd_other	0.241
r_symmetry_xyhbond_nbd_refined	0.233
r_nbd_refined	0.206
r_symmetry_nbd_other	0.182
r_nbtor_refined	0.169
r_xyhbond_nbd_refined	0.138
r_symmetry_nbtor_other	0.082
r_chiral_restr	0.079
r_bond_refined_d	0.009
r_gen_planes_refined	0.009
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1916
Nucleic Acid Atoms
Solvent Atoms	206
Heterogen Atoms	20

Software

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