1ZTZ

Crystal structure of HIV protease- metallacarborane complex

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1NH0	PDB entry 1nh0

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.2	277	2.0M Ammonium dihydrogen Phospate, 0.1M Tric.Cl pH 8.5, pH 4.2, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.45	49.42

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 85.321	α = 90
b = 67.181	β = 94.99
c = 42.498	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	100	CCD	MARRESEARCH	Flat pre-mirror, a fixed-exit sagital focusing double Silicon (111) crystal monochromator and a vertical focusing mirror. Both mirrors are Rhodium-coated.	2004-03-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X13	0.800	EMBL/DESY, HAMBURG	X13

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	2.14	50	99.9	0.055	9.3	7.4		12431			43.2

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	2.14	2.19	99.2		0.228	3	2.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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 1nh0	2.15	28.81	12431	642	99.98	0.17864	0.17592	0.23258	RANDOM	38.384

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]
-0.02		0.05	-0.02		0.05

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	42.898
r_dihedral_angle_4_deg	18.26
r_dihedral_angle_3_deg	16.485
r_dihedral_angle_1_deg	7.555
r_scangle_it	4.13
r_scbond_it	2.674
r_angle_refined_deg	1.929
r_mcangle_it	1.513
r_mcbond_it	0.925
r_chiral_restr	0.884
r_nbtor_refined	0.326
r_symmetry_vdw_refined	0.273
r_nbd_refined	0.227
r_symmetry_hbond_refined	0.215
r_xyhbond_nbd_refined	0.185
r_bond_refined_d	0.009
r_gen_planes_refined	0.008
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1520
Nucleic Acid Atoms
Solvent Atoms	202
Heterogen Atoms	46

Software

Software
Software Name	Purpose
XDS	data scaling
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
XDS	data reduction