1L9A

CRYSTAL STRUCTURE OF SRP19 IN COMPLEX WITH THE S DOMAIN OF SIGNAL RECOGNITION PARTICLE RNA

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.4	300.5	12% PEG4000, 110MM Tris.HCl pH 7.4, 10% glycerol, 50mm magnesium acetate, 100MM ammonium acetate, 5MM magnesium chloride, VAPOR DIFFUSION, HANGING DROP, temperature 300.5K

Crystal Properties
Matthews coefficient	Solvent content
3.4	63.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 70.765	α = 90
b = 223.875	β = 90
c = 43.024	γ = 90

Symmetry
Space Group	P 21 21 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		2001-06-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM14	0.9185	ESRF	BM14

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	2.9	38	91.4	0.081	18.7	6.4	29278	26760			114.6

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)
	2.9	3	52.9		0.31	3.1	4.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.9	37.84	29278	24466	1228	83.6	0.264	0.264	0.264	0.296	RANDOM	98.2

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]
50.12			-23.86		-26.26

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	17.5
c_scangle_it	2.52
c_mcangle_it	2.42
c_scbond_it	1.56
c_mcbond_it	1.45
c_improper_angle_d	1.24
c_angle_deg	1.1
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	727
Nucleic Acid Atoms	2706
Solvent Atoms	30
Heterogen Atoms	26

Software

Software
Software Name	Purpose
CNS	refinement
SHARP	phasing
SOLOMON	phasing
EDEN	model building
REFMAC	refinement
SOLVE	phasing
DENZO	data reduction
SCALEPACK	data scaling
EDEN	phasing
CNS	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.