Experiment: 1XVK

X-ray structure of an Echinomycin-(GCGTACGC)2 complex

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		4.5		PEG550MME, MGCL2, NAAC, SPERMINE- HCL, PH 4.5, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 293K

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 39.183	α = 90
b = 39.183	β = 90
c = 79.89	γ = 120

Symmetry
Space Group	P 63 2 2

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	MAR CCD 165 mm		2003-12-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1		BESSY	14.1

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	1.26	26	99.5	0.0495	0.0495	28.25	15.87		10337

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	1.26	1.4	99.4		0.35	0.35	6.7	9.78

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 (All)	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	MR	FREE R	1.26	26	10337	1025	99.5	0.183	0.183		0.1864	0.221	0.2178	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
9

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	67
Nucleic Acid Atoms	161
Solvent Atoms	56
Heterogen Atoms	25

Software

Software
Software Name	Purpose
EPMR	phasing
SHELXL-97	refinement
HKL-2000	data reduction
XDS	data scaling