2OKZ

MVGGVV peptide derived from Alzheimer's A-beta

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	298	0.2 M CaCl2, 20% isopropanol, 0.1 M Na acetate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 15.148	α = 90
b = 9.576	β = 96.9
c = 23.732	γ = 90

Symmetry
Space Group	P 1 21 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	MAR CCD 165 mm		2005-07-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID13		ESRF	ID13

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	1.8	90	95.3	0.158	4.2	2.9	650	650		-3	26

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)
	1.8	1.94	89.8		0.447		2.6	123

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	MVGGVV from space group P1	1.8	23.56	648	35	93.1	0.217	0.213	0.267	RANDOM	11.768

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]
0.68		-0.24	-1.77		1.04

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	15.503
r_scangle_it	7.162
r_mcbond_it	6.037
r_mcangle_it	5.903
r_scbond_it	5.729
r_dihedral_angle_1_deg	4.554
r_mcbond_other	2.15
r_angle_refined_deg	1.685
r_angle_other_deg	0.633
r_symmetry_vdw_refined	0.299
r_symmetry_vdw_other	0.252
r_nbd_other	0.204
r_nbd_refined	0.146
r_nbtor_refined	0.142
r_nbtor_other	0.095
r_symmetry_hbond_refined	0.093
r_chiral_restr	0.087
r_bond_refined_d	0.017
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	76
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction