3OFW

Crystal structure of recombinant Kunitz Type serine protease Inhibitor-1 from the Carribean sea anemone stichodactyla helianthus

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	288.15	1.7 M ammonium sulphate, 0.1 M Tris-HCl, 6% glycerol, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 288.15K

Crystal Properties
Matthews coefficient	Solvent content
3	58.94

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 37.158	α = 90
b = 37.158	β = 90
c = 114.98	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	288	IMAGE PLATE	MARRESEARCH		2010-05-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU

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	2.5	35.358					3127

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.5	2.64

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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 1SHP	2.5	35.35	2	3127	2955	135	98.41	0.19118	0.18972	0.22103	RANDOM	21.497

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]
1.06			1.06		-2.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.518
r_dihedral_angle_3_deg	20.866
r_dihedral_angle_4_deg	17.746
r_dihedral_angle_1_deg	7.19
r_scangle_it	3.478
r_scbond_it	2.03
r_mcangle_it	1.533
r_angle_refined_deg	1.402
r_mcbond_it	0.904
r_symmetry_hbond_refined	0.354

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.518
r_dihedral_angle_3_deg	20.866
r_dihedral_angle_4_deg	17.746
r_dihedral_angle_1_deg	7.19
r_scangle_it	3.478
r_scbond_it	2.03
r_mcangle_it	1.533
r_angle_refined_deg	1.402
r_mcbond_it	0.904
r_symmetry_hbond_refined	0.354
r_nbtor_refined	0.319
r_symmetry_vdw_refined	0.23
r_nbd_refined	0.192
r_xyhbond_nbd_refined	0.186
r_chiral_restr	0.105
r_bond_refined_d	0.012
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	435
Nucleic Acid Atoms
Solvent Atoms	26
Heterogen Atoms	3

Software

Software
Software Name	Purpose
MAR345dtb	data collection
AMoRE	phasing
REFMAC	refinement
DENZO	data reduction
SCALA	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.