1PWT

THERMODYNAMIC ANALYSIS OF ALPHA-SPECTRIN SH3 AND TWO OF ITS CIRCULAR PERMUTANTS WITH DIFFERENT LOOP LENGTHS: DISCERNING THE REASONS FOR RAPID FOLDING IN PROTEINS

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		4		pH 4

Crystal Properties
Matthews coefficient	Solvent content
2.5	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 33	α = 90
b = 42.4	β = 90
c = 49.7	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	287	IMAGE PLATE	MAR scanner 180 mm plate			M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1		OTHER

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	1.77	15	99.8	0.05	25.1	6.1		7163			18.9

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)
	1.77	1.8	96.8		0.2	5.9

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	1SHG	1.77	14.5	7159	335	99.8	0.189	0.187	0.246	RANDOM	22.9

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
p_transverse_tor	48.6
p_staggered_tor	15
p_special_tor	15
p_planar_tor	3.7
p_scangle_it	2.375
p_mcangle_it	2.094
p_scbond_it	1.569
p_mcbond_it	1.223
p_multtor_nbd	0.263
p_xyhbond_nbd	0.217
p_singtor_nbd	0.195
p_chiral_restr	0.094
p_angle_d	0.029
p_planar_d	0.028
p_plane_restr	0.02
p_bond_d	0.011
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	504
Nucleic Acid Atoms
Solvent Atoms	88
Heterogen Atoms

Software

Software
Software Name	Purpose
AMoRE	phasing
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling