Experiment: 1SWG

CIRCULAR PERMUTED STREPTAVIDIN E51/A46 IN COMPLEX WITH BIOTIN

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1SWA	PDB ENTRY 1SWA (EXCLUDING RESIDUES 46 - 51 IN ALL SUBUNITS)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		4.5		PROTEIN (12MG/ML, 10MM BIOTIN) WAS CRYSTALLIZED FROM 52% MPD (PH 4.5)

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.87

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 71.9	α = 90
b = 78.6	β = 90
c = 90.8	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	100	IMAGE PLATE	MARRESEARCH	RH-COATED SILICON MIRROR	1997-06-01	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-1		SSRL	BL9-1

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	1.75	30	98	0.031	19.9	4		51393		-3

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	1.75	1.81	87		0.261	2	3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1SWA (EXCLUDING RESIDUES 46 - 51 IN ALL SUBUNITS)	1.8	10	47484	4748	98	0.192	0.19		0.1891	0.245	EVERY 10TH REFLECTION

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
	3354	3790

RMS Deviations
Key	Refinement Restraint Deviation
s_similar_adp_cmpnt	0.073
s_non_zero_chiral_vol	0.051
s_zero_chiral_vol	0.04
s_angle_d	0.025
s_anti_bump_dis_restr	0.02
s_from_restr_planes	0.016
s_bond_d	0.007
s_similar_dist
s_rigid_bond_adp_cmpnt
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3461
Nucleic Acid Atoms
Solvent Atoms	335
Heterogen Atoms	64

Software

Software
Software Name	Purpose
SHELXL-97	model building
SHELXL-97	refinement
DENZO	data reduction
SCALEPACK	data scaling
SHELXL-97	phasing