Experiment: 1ZSR

Crystal structure of wild type HIV-1 protease (BRU isolate) with a hydroxyethylamine peptidomimetic inhibitor BOC-PHE-PSI[S-CH(OH)CH2NH]-PHE-GLU-PHE-NH2

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1IIQ	PDB ENTRY 1IIQ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.3	280	1 M Ammonium Phosphate, 0.1 M Na Citrate, 3 mg/ml protein, pH 4.3, VAPOR DIFFUSION, HANGING DROP, temperature 280K

Crystal Properties
Matthews coefficient	Solvent content
2.16	43.13

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.801	α = 90
b = 62.801	β = 90
c = 82.222	γ = 120

Symmetry
Space Group	P 61

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MARRESEARCH		1997-04-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ELETTRA BEAMLINE 5.2R	1.0000	ELETTRA	5.2R

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	2.06	40	97.6	0.075	0.075	26.7	6.98	10981	10981		-999	25.1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.06	2.11	69.8		0.305	0.305	4.98	4.5	553

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	R-FREE statistic throughout	PDB ENTRY 1IIQ	2.06	40	10960	10960	545	96	0.1936	0.1936	0.2023	0.188	0.2842	0.1913	RANDOM	29.1

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]
-0.197	-0.508		-0.197		0.393

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	5.786
c_scbond_it	3.874
c_mcangle_it	3.275
c_mcbond_it	2.081
c_angle_deg	1.65036
c_bond_d	0.010709

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1518
Nucleic Acid Atoms
Solvent Atoms	152
Heterogen Atoms	51

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
CNS	refinement