2QI4

Crystal structure of protease inhibitor, MIT-2-AD93 in complex with wild type HIV-1 protease

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.2	298	126 mM Sodium Phosphate, 63 mM sodium citrate, 24-29% ammonium sulphate, pH 6.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.11	41.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.855	α = 90
b = 58.178	β = 90
c = 61.804	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	200	IMAGE PLATE	RIGAKU RAXIS IV	osmic mirrors	2006-09-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	1.8	50	94.5	0.042	4.2	16.6	6.4		16632

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	pdb entry 1F7A	1.8	42.37	15748	15748	849	94.61	0.17418	0.17418	0.17267	0.20317	RANDOM	16.911

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]
-0.55			0.06		0.5

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.796
r_dihedral_angle_4_deg	17.885
r_dihedral_angle_3_deg	11.8
r_dihedral_angle_1_deg	6.189
r_scangle_it	1.458
r_angle_refined_deg	1.193
r_scbond_it	0.994
r_angle_other_deg	0.696
r_mcangle_it	0.659
r_mcbond_it	0.549
r_nbd_other	0.19
r_nbd_refined	0.176
r_nbtor_refined	0.165
r_symmetry_vdw_other	0.163
r_xyhbond_nbd_refined	0.14
r_symmetry_vdw_refined	0.122
r_symmetry_hbond_refined	0.099
r_mcbond_other	0.089
r_nbtor_other	0.08
r_chiral_restr	0.067
r_bond_refined_d	0.008
r_bond_other_d	0.006
r_gen_planes_refined	0.004
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1498
Nucleic Acid Atoms
Solvent Atoms	147
Heterogen Atoms	48

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
AMoRE	phasing