2I32

Structure of a human ASF1a-HIRA complex and insights into specificity of histone chaperone complex assembly

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	298	CRYSTALS OF THE HUMAN ASF1AN-HIRA(425-472) COMPLEX WERE GROWN BY HANGING DROP VAPOR DIFFUSION AT ROOM TEMPERATURE AND WERE OBTAINED BY MIXING 2 UL OF A 0.5 MM PROTEIN COMPLEX SOLUTION (IN 20 MM HEPES PH 7.0, 150 MM NACL AND 5 MM BETA-ME) WITH 2 UL OF RESERVOIR SOLUTION CONTAINING 1.44 M NAH2PO4 AND 0.16 M K2HPO4 AT PH 5.6, AND EQUILIBRATING OVER 1.0 ML OF RESERVOIR SOLUTION. CRYSTALS WERE FULLY GROWN WITHIN TWO WEEKS TO A TYPICAL SIZE OF 0.3MMX0.3MMX0.2MM, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298.0K

Crystal Properties
Matthews coefficient	Solvent content
3.02	59.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 116.226	α = 90
b = 116.226	β = 90
c = 167.599	γ = 120

Symmetry
Space Group	P 65 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	77	CCD	ADSC QUANTUM 4	mirrors	2005-04-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X6A	0.980	NSLS	X6A

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	2.5	50	99.9	0.058	12.8			43841		-3.5

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)
	2.5	2.59	99.6		0.641			2322

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1ROC	2.7	25	19106	43841	1813	95.7	0.229	0.269	RANDOM	52.923

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]
-8.451	-8.556		-8.451		16.901

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	3.275
c_mcangle_it	2.561
c_scbond_it	2.133
c_mcbond_it	1.464
c_angle_deg	1.421
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2780
Nucleic Acid Atoms
Solvent Atoms	130
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
CNS	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	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.