1IKJ

1.27 A CRYSTAL STRUCTURE OF NITROPHORIN 4 FROM RHODNIUS PROLIXUS COMPLEXED WITH IMIDAZOLE

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	295	PEG-4000, sodium citrate, pH 5.60, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
1.94	36.58

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 70.18	α = 90
b = 42.48	β = 94.28
c = 52.96	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++	MSC Blue Confocal Mirrors	2001-02-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH3R	1.5418

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	1.22	22	96	0.032	14	2.4	40637	37957			9.1

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)
	1.27	1.3	79		0.065	9.2	1.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	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		pdb entry 1IKH	1.27	22	40637	39432	2012	96	0.127	0.127	0.127	0.173	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
16

RMS Deviations
Key	Refinement Restraint Deviation
s_angle_d	0.032
s_bond_d	0.011
s_similar_dist
s_from_restr_planes
s_zero_chiral_vol
s_non_zero_chiral_vol
s_anti_bump_dis_restr
s_rigid_bond_adp_cmpnt
s_similar_adp_cmpnt
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1503
Nucleic Acid Atoms
Solvent Atoms	276
Heterogen Atoms	50

Software

Software
Software Name	Purpose
d*TREK	data scaling
d*TREK	data reduction
SHELXL-97	refinement

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.