1RKI

Structure of pag5_736 from P. aerophilum with three disulphide bonds

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	293	PEG 8000, lithium sulphate, acetate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.35	47.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 105.483	α = 90
b = 43.717	β = 113.24
c = 52.717	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	IMAGE PLATE	RIGAKU RAXIS IV		2003-06-06	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	ADSC QUANTUM 315		2003-07-12	M	SINGLE WAVELENGTH
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.5418
2	SYNCHROTRON	ALS BEAMLINE 8.2.2	1.1271	ALS	8.2.2

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
1,2	1.6	90	96	0.125			28068	28068

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)
1,2	1.6	1.66	75		0.495			2174

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	MIR	THROUGHOUT	1.6	28.63	26648	26648	1409	95.69	0.18665	0.18665	0.18409	0.23507	RANDOM	30.7

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]
-1.53		-1.46	2.69		-2.31

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.855
r_scangle_it	5.596
r_scbond_it	3.494
r_angle_other_deg	2.508
r_mcangle_it	2.416
r_angle_refined_deg	2.27
r_mcbond_it	1.368
r_symmetry_vdw_other	0.284
r_symmetry_vdw_refined	0.256
r_nbd_other	0.24
r_nbd_refined	0.207
r_symmetry_hbond_refined	0.199
r_xyhbond_nbd_refined	0.145
r_chiral_restr	0.111
r_nbtor_other	0.094
r_bond_refined_d	0.024
r_gen_planes_refined	0.01
r_gen_planes_other	0.01
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1614
Nucleic Acid Atoms
Solvent Atoms	89
Heterogen Atoms	47

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
SHELXD	phasing
MLPHARE	phasing
DM	phasing
CNS	refinement