4IMJ | pdb_00004imj

Novel Modifications on C-terminal Domain of RNA Polymerase II can Fine-tune the Phosphatase Activity of Ssu72

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	293	Optimized Ssu72-symplekin crystals were obtained with reservoir solution consisting of 12% PEG3350 (w/v) and 100 mM HEPE pH 8.5. To obtain the tertiary complex structure of Drosophila Ssu72-symplekin-CTD(phos.Ser5), crystals of Ssu72-symplekin were soaked in a mother solution containing 2 mM 19mer CTD(phos.Ser5) peptides overnight at room temperature , VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.51	64.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 127.992	α = 90
b = 127.992	β = 90
c = 105.775	γ = 90

Symmetry
Space Group	P 4

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	ADSC QUANTUM 315r		2012-04-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.3	0.9765	ALS	5.0.3

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	2.58	50	100	0.096	24.2	7.5	53994	53955		-3	65.87

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	2.58	2.62	99.8		0.845	2	7.3	2693

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 (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.58	37.77	53782	2731	99.96	0.2123	0.2107	0.2162	0.2437	0.2451	RANDOM	70.94

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]
-1.9107			-1.9107		3.8213

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	3.14
t_omega_torsion	2.6
t_angle_deg	1.05
t_bond_d	0.01
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8166
Nucleic Acid Atoms
Solvent Atoms	207
Heterogen Atoms	5

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
BUSTER	refinement
HKL-2000	data reduction
HKL-2000	data scaling