Experiment: 3BQE

Structure of the central domain (MsrA) of Neisseria meningitidis PilB (reduced form)

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	microbatch-under-oil	7.5	293	1 volume of 20% PEG 8000, 0.1M Na HEPES pH 7.5, mixed with 1 volume of 50mM TRIS HCl, 2mM EDTA pH 8, 18mg/mL protein, microbatch-under-oil, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.61562	23.868227

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 43.488	α = 90
b = 49.183	β = 90
c = 66.153	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MAC Science DIP-2030		2000-02-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ENRAF-NONIUS FR591	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	2	30	95.7	0.056	14.3	2.04	10048	9614			11.5

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	2.03	90.2		0.269	3.3	1.98

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (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	PDB ENTRY 1NWA	2	16.54	10045	9342	469	93.1	0.175	0.1752	0.203	0.2035	RANDOM	22.4

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]
0.67			3.52		-4.18

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	24.3
c_scangle_it	3.87
c_scbond_it	2.91
c_mcangle_it	1.85
c_mcbond_it	1.37
c_angle_deg	1.2
c_improper_angle_d	0.71
c_bond_d	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1357
Nucleic Acid Atoms
Solvent Atoms	146
Heterogen Atoms

Software

Software
Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
XPRESS	data collection
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing