2QV8 | pdb_00002qv8

Structure of the minor pseudopilin EpsH from the Type 2 Secretion System of Vibrio cholerae

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	4.5	298	PEG 4000, pH 4.5, vapor diffusion, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.2	43.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.349	α = 90
b = 70.449	β = 90
c = 85.1	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	CCD	MARRESEARCH		2005-07-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.97903	SSRL	BL9-2

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	1.99	50	93.2	0.07	11.5	7.1		21140

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	1.99	2.06	100		0.271		6.9	2231

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	SAD	THROUGHOUT	2	20	20721	1072	93.01	0.171	0.169	0.1765	0.212	0.2156	RANDOM	12.33

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]
0.62			-1.12		0.5

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.845
r_dihedral_angle_4_deg	21.241
r_dihedral_angle_3_deg	13.008
r_dihedral_angle_1_deg	6.547
r_scangle_it	3.608
r_scbond_it	2.47
r_angle_refined_deg	1.537
r_mcangle_it	1.384
r_mcbond_it	1.053
r_angle_other_deg	0.94
r_symmetry_hbond_refined	0.398
r_mcbond_other	0.348
r_xyhbond_nbd_refined	0.261
r_symmetry_vdw_other	0.237
r_nbd_refined	0.204
r_nbd_other	0.2
r_nbtor_refined	0.176
r_symmetry_vdw_refined	0.167
r_chiral_restr	0.094
r_nbtor_other	0.085
r_xyhbond_nbd_other	0.043
r_bond_refined_d	0.016
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2117
Nucleic Acid Atoms
Solvent Atoms	301
Heterogen Atoms

Software

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