Experiment: 1YU5

Crystal Structure of the Headpiece Domain of Chicken Villin

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		Bromine phased model, with six bromide sites per asymmetric unit

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	298	1.5 M Na,K Phosphate buffer, 100 mM 2-(4-(2-Hydroxyethyl)-1-piperzainyl) ethanesulfonic acid, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.06	40.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 31.224	α = 90
b = 38.034	β = 90
c = 52.705	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	95	IMAGE PLATE			2001-06-02	M	SINGLE WAVELENGTH
2	1	x-ray		IMAGE PLATE			2002-08-02	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X8C	0.9206	NSLS	X8C
2	SYNCHROTRON	NSLS BEAMLINE X8C	0.9202,0.9050	NSLS	X8C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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
1,2	1.4	20.14	99.6	0.053	19.2	20.1	12905	12850			14.9

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.4	1.49	100		0.288	7.6		2119

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 (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	Bromine phased model, with six bromide sites per asymmetric unit	1.4	100	12905	12850	1025	99.6	0.194	0.192	0.1958	0.216	Random	16.1

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]
3.55			-1.604		-1.945

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	20.88
c_scangle_it	2.24
c_scbond_it	1.58
c_mcangle_it	1.43
c_angle_deg	1.3
c_mcbond_it	0.9
c_improper_angle_d	0.88
c_bond_d	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	537
Nucleic Acid Atoms
Solvent Atoms	95
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
CNS	refinement