4IRV | pdb_00004irv

Structure of the Helicobacter pylori CagA Oncogene Bound to the Human Tumor Suppressor Apoptosis-stimulating Protein of p53-2

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5		Crystals were grown by vapor diffusion at 25 degrees C using hanging drops formed from mixing a 2ul of the protein complex with 2ul of an equilibration buffer (21% polyethylene glycol (PEG) molecular weight 4 kDa, 200 mM Li2 SO4 , and 100 mM Tris pH 8.5) and 0.6ul of the Silver Bullets additive 43 (Hampton Research HR2-996-43). Significantly higher quality crystals were obtained from selenomethionine-substituted protein complexes and they were used for the final refinement, VAPOR DIFFUSION, HANGING DROP

Crystal Properties
Matthews coefficient	Solvent content
2.53	51.29

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 118.641	α = 90
b = 120.239	β = 115.64
c = 100.659	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		CCD	ADSC QUANTUM 315			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	0.97869	NSLS	X29A

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	2.04	90.75					80050

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	2.04	90.75	73785	3915	96.71	0.19148	0.18927	0.195	0.2341	0.2412	RANDOM	34

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]
-2.06		0.24	-0.99		2

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.834
r_dihedral_angle_4_deg	24.42
r_dihedral_angle_3_deg	16.826
r_dihedral_angle_1_deg	5.511
r_angle_refined_deg	1.909
r_angle_other_deg	0.904
r_chiral_restr	0.117
r_bond_refined_d	0.019
r_gen_planes_refined	0.009
r_bond_other_d	0.002
r_gen_planes_other	0.001
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	7017
Nucleic Acid Atoms
Solvent Atoms	513
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement