1BGX

TAQ POLYMERASE IN COMPLEX WITH TP7, AN INHIBITORY FAB

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1AYL	PDB ENTRY 1AYL AND 1TAQ
experimental model	PDB	1TAQ	PDB ENTRY 1AYL AND 1TAQ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.4	277	PROTEIN WAS CRYSTALLIZED FROM 22% PEG 3350, 200 MM TRIS/HCL, PH 7.4. COMPLEX WAS MADE AT A PROTEIN CONCENTRATION OF 0.5 MG/ML, LEFT FOR 2-3 DAYS AT 4 DEGREES CELSIUS, CONCENTRATED TO 5MG/ML PROTEIN AND CRYSTALLIZATION CARRIED OUT IN HANGING DROPS., vapor diffusion - hanging drop, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.8	70

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.6	α = 100.7
b = 89.1	β = 115.3
c = 89.3	γ = 95.3

Symmetry
Space Group	P 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	AREA DETECTOR	SIEMENS		1997-10-13	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	SIEMENS

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	2.3	27.7	82	0.074	8.2	5.1		81111		2	21

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)
	2.3	2.5	75.9		0.122	8	3.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation 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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1AYL AND 1TAQ	2.3	8	2	81111	4080	82	0.189	0.189	0.253	RANDOM	28.5

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
x_dihedral_angle_d	19.1
x_scangle_it	2.8
x_mcangle_it	2.5
x_scbond_it	2.4
x_angle_deg	1.6
x_improper_angle_d	1.6
x_mcbond_it	1.4
x_bond_d	0.01
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9814
Nucleic Acid Atoms
Solvent Atoms	263
Heterogen Atoms

Software

Software
Software Name	Purpose
XDS	data scaling
XDS	data reduction
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing