4HWY

Trypanosoma brucei procathepsin B solved from 40 fs free-electron laser pulse data by serial femtosecond X-ray crystallography

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3MOR	PDB entry 3MOR

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	Crystallization in vivo within living SF9 insect cells	7.4	310.15	Spontaneous formation of needle-shaped microcrystals in Sf9 cells infected with recombinant baculovirus containing the gene encoding the pre-pro form of Trypanosoma brucei cathepsin B, pH 7.4, Crystallization in vivo within living SF9 insect cells, temperature 310.15K

Crystal Properties
Matthews coefficient	Solvent content
2.88	57.27

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 125.4	α = 90
b = 125.4	β = 90
c = 54.56	γ = 90

Symmetry
Space Group	P 42 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	293	PIXEL	Cornell-SLAC Pixel Array Detector		2011-02-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	FREE ELECTRON LASER	SLAC LCLS BEAMLINE CXI	1.32	SLAC LCLS	CXI

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.1	20	100			25969	25969

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.1	2.175	100

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-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 3MOR	2.1	88.67	24648	24648	1321	99.99	0.18335	0.18181	0.21308	RANDOM	46.244

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]
0.36			0.36		-0.72

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.25
r_dihedral_angle_4_deg	21.773
r_dihedral_angle_3_deg	15.671
r_dihedral_angle_1_deg	6.964
r_angle_refined_deg	1.54
r_chiral_restr	0.122
r_bond_refined_d	0.013
r_gen_planes_refined	0.012
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it
r_mcbond_other
r_mcangle_it
r_scbond_it
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2386
Nucleic Acid Atoms
Solvent Atoms	98
Heterogen Atoms	67

Software

Software
Software Name	Purpose
CXI	data collection
MOLREP	phasing
REFMAC	refinement
CrystFEL	data reduction
CrystFEL	data scaling