Experiment: 2X1S

Crystallographic binding studies with an engineered monomeric variant of triosephosphate isomerase

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2VEK	PDB ENTRY 2VEK

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.5		20% PEG6000, 0.1M CITRATE, PH 5.5

Crystal Properties
Matthews coefficient	Solvent content
2.24	45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.82	α = 90
b = 86.17	β = 98.3
c = 56.28	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	IMAGE PLATE	MARRESEARCH	MONTEL MIRRORS	2009-12-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ENRAF-NONIUS FR591

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	1.92	15	98.4	0.1	15.6	5.6		32518		3	13.43

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	1.92	2	86.2		0.39	4.1	4.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 2VEK	1.93	14.89	1.63	32399	962	99.7	0.162	0.161	0.1629	0.201	0.1955	13

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]
0.5847		1.5853	0.2991		-0.8838

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	16.224
f_angle_d	1.028
f_chiral_restr	0.067
f_bond_d	0.006
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3538
Nucleic Acid Atoms
Solvent Atoms	590
Heterogen Atoms	28

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
MOLREP	phasing