1X8O

1.01 A Crystal Structure Of Nitrophorin 4 From Rhodnius Prolixus Complexed With Nitric Oxide at pH 5.6

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1KOI

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	300	ammonium phosphate, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 300.0K

Crystal Properties
Matthews coefficient	Solvent content
1.63	24.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 70.445	α = 90
b = 42.729	β = 94.43
c = 53.098	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	CCD	ADSC QUANTUM 315	Flat mirror (vertical focusing)	2002-02-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-1	0.7510	SSRL	BL9-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.01	19.81	98.8	0.049	0.049	21	3.67	82359	82359			7.4

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.01	1.04	93.2		0.171	0.171	6.5	3.6	7313

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation 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	FOURIER SYNTHESIS	FREE R	1KOI	1.01	6	81907	81907	4110	98.7	0.1032	0.1015	0.1015	0.1304	RANDOM	11

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
113	1413	1840.14

RMS Deviations
Key	Refinement Restraint Deviation
s_approx_iso_adps	0.125
s_anti_bump_dis_restr	0.118
s_non_zero_chiral_vol	0.103
s_zero_chiral_vol	0.079
s_similar_adp_cmpnt	0.063
s_angle_d	0.033
s_bond_d	0.015
s_rigid_bond_adp_cmpnt	0.005
s_similar_dist
s_from_restr_planes

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1428
Nucleic Acid Atoms
Solvent Atoms	395
Heterogen Atoms	50

Software

Software
Software Name	Purpose
DENZO	data reduction
d*TREK	data reduction
SHELX	model building
SHELXL-97	refinement
CrystalClear	data scaling
SHELX	phasing

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 R01GM157729.