Experiment: 1KNI

Stabilizing Disulfide Bridge Mutant of T4 Lysozyme

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		WT* T4 lysozyme

Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.86	56.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.3	α = 90
b = 62.3	β = 90
c = 95.2	γ = 120

Symmetry
Space Group	P 32 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	photographic film	OSCILLATION CAMERA	Kodak No-Screen X-ray film	1991-07-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	rotating-anode X-ray tube	ELLIOTT GX-21	1.5418

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	1.7			0.071				15778

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION	Rigid body	WT* T4 lysozyme	1.7		15778			0.176		0.1704

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
t_angle_deg	2.9
t_bond_d	0.019

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1290
Nucleic Acid Atoms
Solvent Atoms	110
Heterogen Atoms	5

Software

Software
Software Name	Purpose
ROTAVATA	data reduction
TNT	refinement
AGROVATA / ROTAVATA	data scaling
AGROVATA / ROTAVATA	data scaling
TNT	phasing