1PCS

THE 2.15 A CRYSTAL STRUCTURE OF A TRIPLE MUTANT PLASTOCYANIN FROM THE CYANOBACTERIUM SYNECHOCYSTIS SP. PCC 6803

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6		PROTEIN WAS CRYSTALLIZED FROM 3.2M AMMONIUM SULFATE, 0.1M NA,K.PHOSPHATE, PH 6.0 WITH A PROTEIN CONCENTRATION OF 10 MG/ML

Crystal Properties
Matthews coefficient	Solvent content
1.94	37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.3	α = 90
b = 34.3	β = 90
c = 111.8	γ = 120

Symmetry
Space Group	P 32 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	295	IMAGE PLATE	MARRESEARCH		1996-04-19	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1		ENRAF-NONIUS

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	2.15	20.3	92.7	0.065	8	5.5		4422		2	12.72

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	2.15	2.25	98		0.074	8.2	5.2

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 1PCY	2.15	8	4173		91.6	0.167	0.167	0.22	RANDOM	11.9

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]

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	27.08
x_scangle_it	3
x_mcangle_it	2.5
x_scbond_it	2.5
x_mcbond_it	2
x_angle_deg	1.627
x_improper_angle_d	1.148
x_bond_d	0.013
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	727
Nucleic Acid Atoms
Solvent Atoms	75
Heterogen Atoms	1

Software

Software
Software Name	Purpose
AMoRE	phasing
X-PLOR	refinement
MOSFLM	data reduction
CCP4	data scaling