3DQ8

Structure of the Yellow Fluorescent Protein Citrine Frozen at 1500 Atmospheres Number 2: Structure 16 in a Series of 26 High Pressure Structures

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1HUY	PDB ENTRY 1HUY WITH RESIDUE 80 MUTATED TO GLUTAMINE

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	277	Crystals grown by seeding using a Seed Bead (HR2-320, Hampton Research) in 5% PEG 3350, 50 mM Na Acetate, 50 mM NH4 Acetate, pH 5.0. Crystals were grown at 4 deg C and at ambient pressure, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.343	α = 90
b = 62.982	β = 90
c = 71.084	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 210		2005-11-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F2	0.9795	CHESS	F2

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	1.51	35.54	71.5	0.068	0.068	8.6	5.1		26354

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.51		93.8		0.307	0.307	2.4	5.1

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1HUY WITH RESIDUE 80 MUTATED TO GLUTAMINE	1.51	20	25014	1326	71.11	0.22454	0.22145	0.28301	RANDOM	26.548

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]
-0.15			-0.06		0.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.966
r_dihedral_angle_4_deg	20.175
r_dihedral_angle_3_deg	18.266
r_dihedral_angle_1_deg	7.266
r_scangle_it	5.719
r_scbond_it	4.015
r_angle_refined_deg	2.359
r_mcangle_it	2.154
r_mcbond_it	1.962
r_nbtor_refined	0.306
r_nbd_refined	0.285
r_symmetry_hbond_refined	0.197
r_symmetry_vdw_refined	0.193
r_xyhbond_nbd_refined	0.18
r_chiral_restr	0.152
r_bond_refined_d	0.028
r_gen_planes_refined	0.011
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1850
Nucleic Acid Atoms
Solvent Atoms	221
Heterogen Atoms

Software

Software
Software Name	Purpose
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
MOSFLM	data reduction