1MR7

Crystal Structure of Streptogramin A Acetyltransferase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		290	Sodium Formate 2.7M, VAPOR DIFFUSION, HANGING DROP, temperature 290K
2	VAPOR DIFFUSION, HANGING DROP		290	Sodium Formate 2.7M, VAPOR DIFFUSION, HANGING DROP, temperature 290K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 181.393	α = 90
b = 183.001	β = 90
c = 184.124	γ = 90

Symmetry
Space Group	F 2 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	MARRESEARCH	Mirrors	2000-11-10	M	MAD
2	1	x-ray	100	CCD	ADSC QUANTUM 4	Mirrors	2001-04-10	M	SINGLE WAVELENGTH
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM14	0.97947, 0.97939, 0.96863	ESRF	BM14
2	SYNCHROTRON	SRS BEAMLINE PX14.2	0.97800	SRS	PX14.2

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	1.8	20		0.053	21.3	3.37		140296			39.7

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)
1,2	1.8	1.84			0.438	3.27

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.8	21.22	129459	6864	97.26	0.17792	0.17792	0.17636	0.20687	RANDOM	17.225

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]
-0.06			0.05		0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	20.394
r_scangle_it	8.608
r_dihedral_angle_1_deg	8.048
r_scbond_it	6.804
r_mcangle_it	4.601
r_mcbond_it	3.304
r_angle_refined_deg	1.244
r_angle_other_deg	0.744
r_xyhbond_nbd_other	0.236
r_nbd_refined	0.224
r_nbd_other	0.203
r_symmetry_hbond_refined	0.202
r_symmetry_vdw_other	0.191
r_symmetry_vdw_refined	0.155
r_xyhbond_nbd_refined	0.154
r_chiral_restr	0.108
r_gen_planes_refined	0.013
r_bond_refined_d	0.012
r_gen_planes_other	0.007
r_bond_other_d

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9523
Nucleic Acid Atoms
Solvent Atoms	694
Heterogen Atoms

Software

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