Experiment: 8DWM

Host-guest complex of bleomycin A2 fully bound to CTTAGTTATAACTAAG

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		293	Crystals of the host-guest complex were grown in 5 mM magnesium acetate, 0.05 M ADA pH 6.5, 9% PEG4000. To obtain complexes with BLM, crystals were soaked in well solutions containing 0.1 mM BLM followed by stabilization in 9% PEG4000, 5 mM magnesium acetate, 100 mM HEPES, pH 8.0, 20% ethylene glycol, 0.25 mM BLM until unit cell changes correlating with binding of BLM were detected.

Crystal Properties
Matthews coefficient	Solvent content
2.72	54.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.808	α = 90
b = 144.292	β = 90
c = 49.885	γ = 90

Symmetry
Space Group	P 21 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	100	CCD	ADSC QUANTUM 315r		2009-10-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.97948	APS	19-ID

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	2.99	50	94.7	0.086	12.5	3.8		7774			50.97

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	3	3.11	67.7		0.287		3.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1ZTW	2.99	49.88	1.36	7708	354	94.03	0.2282	0.2247	0.2243	0.2967	0.2964	52.6544

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1989
Nucleic Acid Atoms	304
Solvent Atoms	3
Heterogen Atoms	178

Software

Software
Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction