Experiment: 1H91

The crystal structure of lobster apocrustacyanin A1 using softer X-rays.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9	291	HANGING DROP, 18 DEGREES C, OVER RESERVOIR 0.1 M TRIS/HCL, PH 9.0, 5% MPD, 1MM EDTA, 1.9 M AMMONIUM SULPHATE. DROP MADE UP BY MIXING 1:1 PROTEIN SOLUTION (CONTAINING 20 MG/ML A1 SUBUNIT IN 0.1 M TRIS-HCL, PH 7.0, 1 MM EDTA) AND OF THE RESERVOIR SOLUTION.

Crystal Properties
Matthews coefficient	Solvent content
1.96	37.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 41.65	α = 90
b = 80.68	β = 90
c = 110.84	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 CCD		2000-08-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX9.6		SRS	PX9.6

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.35	100	88.4	0.05	19.6	8.01		73302

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	1.35	1.42	81.8		0.117	7.3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SIRAS	FREE R-VALUE	1.4	100	60276	3137	80.1	0.1766		0.1928	0.2293	0.2251	RANDOM

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
30		3377.2

RMS Deviations
Key	Refinement Restraint Deviation
s_non_zero_chiral_vol	0.064
s_zero_chiral_vol	0.059
s_similar_adp_cmpnt	0.052
s_from_restr_planes	0.0292
s_angle_d	0.028
s_anti_bump_dis_restr	0.012
s_bond_d	0.011
s_rigid_bond_adp_cmpnt	0.004
s_similar_dist
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2902
Nucleic Acid Atoms
Solvent Atoms	439
Heterogen Atoms	32

Software

Software
Software Name	Purpose
SHELXL-97	refinement
DENZO	data reduction
SCALEPACK	data scaling