1K6F

Crystal Structure of the Collagen Triple Helix Model [(Pro-Pro-Gly)10]3

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	microdialysis carried out in microgravity conditions	5.6	294	HAc/NaAc, pH 5.6, microdialysis carried out in microgravity conditions, temperature 21K

Crystal Properties
Matthews coefficient	Solvent content
2.11	41.82

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 26.907	α = 90
b = 26.357	β = 90
c = 182.498	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	294	IMAGE PLATE	MAR scanner 345 mm plate			M	SINGLE WAVELENGTH
2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ELETTRA BEAMLINE 5.2R	0.9	ELETTRA	5.2R
2	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7B	0.87	EMBL/DESY, HAMBURG	BW7B

Data Collection

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	ARP/WARP	THROUGHOUT	1.3	15	29431	23121	1152		0.226	0.185	0.181	0.297	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]

RMS Deviations
Key	Refinement Restraint Deviation
c_angle_d	0.045
c_bond_d	0.026

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1056
Nucleic Acid Atoms
Solvent Atoms	352
Heterogen Atoms

Software

Software
Software Name	Purpose
ARP/wARP	model building
SHELXL-97	refinement
DENZO	data reduction
SCALEPACK	data scaling