1RZJ

HIV-1 HXBC2 GP120 ENVELOPE GLYCOPROTEIN COMPLEXED WITH CD4 AND INDUCED NEUTRALIZING ANTIBODY 17B

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.4	293	0.5 UL OF PROTEIN (~10MG/ML IN 350 MM NACL, 5 MM TRISCL PH 7.0) + 0.4 UL OF 0.1 M NACITRATE, 0.02 M NAHEPES, 10% ISOPROPANOL, 10.5% MONOMETHYL-PEG 5000, 0.0075% SEAPREP AGAROSE, PH 6.4 OVER A RESERVOIR OF 0.35 M NACL, 0.1 M NACITRATE, 0.02 M NAHEPES, 10% ISOPROPANOL, 10.5% MONOMETHYL-PEG 5000, PH 6.4, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.8	55.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 71.25	α = 90
b = 88.11	β = 90
c = 196.54	γ = 90

Symmetry
Space Group	P 2 2 21

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	FUJI		1996-05-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4A	0.97953	NSLS	X4A

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	2.2	20				56183			-0.35	4.7

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	2.2	2.28	66.3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	THIS DEPOSIT IS the re-refinement of previously determined 1G9M structure	THROUGHOUT	2.2	19.81	55793	55793	3946	87.6	0.2621	0.2621	0.262	0.323	RANDOM	31

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]
-8.15			1.35		6.8

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	26.1
c_scangle_it	3.09
c_mcangle_it	2.91
c_scbond_it	2.04
c_mcbond_it	1.7
c_angle_deg	1.3
c_improper_angle_d	0.86
c_bond_d	0.007
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7141
Nucleic Acid Atoms
Solvent Atoms	586
Heterogen Atoms	220

Software

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