2O0I

crystal structure of the R185A mutant of the N-terminal domain of the Group B Streptococcus Alpha C protein

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1YWM	PDB entry 1YWM

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	294	0.1M sodium acetate, 10% PEG4000, DTT, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
3.12	60.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 55.7	α = 90
b = 55.7	β = 90
c = 277.94	γ = 120

Symmetry
Space Group	P 61 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					M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ELLIOTT GX-13	1.5418

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	3.1	20	100	0.143	5.7			5264

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	3.1	3.21	100		0.347			488

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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 1YWM	3.1	19.84	5200	510	100	0.247	0.245	0.268	RANDOM	9.299

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]
0.25	0.13		0.25		-0.38

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	10.035
r_scangle_it	5.869
r_scbond_it	3.915
r_dihedral_angle_3_deg	3.016
r_mcangle_it	2.79
r_angle_refined_deg	1.639
r_mcbond_it	1.603
r_dihedral_angle_4_deg	1.058
r_nbtor_refined	0.31
r_dihedral_angle_1_deg	0.305

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	10.035
r_scangle_it	5.869
r_scbond_it	3.915
r_dihedral_angle_3_deg	3.016
r_mcangle_it	2.79
r_angle_refined_deg	1.639
r_mcbond_it	1.603
r_dihedral_angle_4_deg	1.058
r_nbtor_refined	0.31
r_dihedral_angle_1_deg	0.305
r_symmetry_hbond_refined	0.269
r_nbd_refined	0.233
r_symmetry_vdw_refined	0.221
r_xyhbond_nbd_refined	0.124
r_chiral_restr	0.013
r_bond_refined_d	0.011
r_gen_planes_refined	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1403
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345	data collection
HKL-2000	data reduction
HKL-2000	data scaling

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.