4DXM

Crystal Structure of an ancestral GFP-like protein

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.7	298	0.2M tris, 0.12M magnesium sulfate, 20% PEG 4000, pH 7.7, VAPOR DIFFUSION, HANGING DROP, temperature 198K, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.05	40.02

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 106.28	α = 90
b = 92.71	β = 93.18
c = 89.06	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	100	CCD	NOIR-1		2010-12-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 4.2.2	0.9998	ALS	4.2.2

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	1.4	29.67	99.9	6.1	3.5	169121	169035	3	2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.4	1.48	100		0.378		0.35	24654

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	1.4	29.67	169122	160594	8278	99.85	0.1431	0.14485	0.14308	0.17917	RANDOM	10.361

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]
-0.02			0.03		-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.417
r_dihedral_angle_3_deg	12.184
r_dihedral_angle_4_deg	11.79
r_dihedral_angle_1_deg	7.061
r_sphericity_free	5.192
r_scangle_it	4.025
r_scbond_it	2.689
r_sphericity_bonded	2.591
r_mcangle_it	1.874
r_angle_refined_deg	1.492
r_rigid_bond_restr	1.253
r_mcbond_it	1.172
r_angle_other_deg	0.844
r_mcbond_other	0.508
r_chiral_restr	0.092
r_bond_refined_d	0.011
r_gen_planes_refined	0.008
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7197
Nucleic Acid Atoms
Solvent Atoms	1150
Heterogen Atoms	15

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling