3O3Y | pdb_00003o3y

A chimeric alpha+alpha/beta peptide based on the CHR domain sequence of gp41

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3F4Z	PDB entry 3F4Z

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	298	0.3 M NaCl, 0.1 M Tris pH 8.5, 35% w/v PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
1.72	28.59

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 33.036	α = 90
b = 33.036	β = 90
c = 48.9	γ = 120

Symmetry
Space Group	P 31 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	MARMOSAIC 225 mm CCD		2008-02-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-F	0.97857	APS	21-ID-F

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.35	50	99.3	0.042	44.2	10.4		7108

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 3F4Z	1.35	25	6749	333	99.26	0.14401	0.14274	0.15	0.17092	0.17	RANDOM	19.13

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]
1.18	0.59		1.18		-1.77

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.368
r_sphericity_free	16.897
r_dihedral_angle_3_deg	16.174
r_scangle_it	10.301
r_sphericity_bonded	6.753
r_scbond_it	6.687
r_dihedral_angle_1_deg	5.316
r_mcangle_it	4.43
r_rigid_bond_restr	3.506
r_dihedral_angle_4_deg	3.466
r_mcbond_it	2.965
r_angle_refined_deg	1.916
r_mcbond_other	1.428
r_angle_other_deg	1.352
r_chiral_restr	0.15
r_bond_refined_d	0.017
r_gen_planes_refined	0.006
r_bond_other_d	0.001
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

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	301
Nucleic Acid Atoms
Solvent Atoms	28
Heterogen Atoms	1

Software

Software
Software Name	Purpose
MD2	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling