3HEV | pdb_00003hev

Cyclic residues in alpha/beta-peptide helix bundles: GCN4-pLI side chain sequence on an (alpha-alpha-beta) backbone with a cyclic beta-residue at position 19

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3C3G	PDB ENTRY 3C3G

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	1.6 M ammonium sulfate, 0.1 M MES pH 6.5, 10% v/v dioxane, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.08	40.88

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 38.862	α = 90
b = 38.862	β = 90
c = 46.375	γ = 90

Symmetry
Space Group	P 4 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		CCD	BRUKER SMART 6000	confocal mirrors	2007-08-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	BRUKER AXS MICROSTAR	1.5418

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	2	23.64	98.3	0.049	14.6	4.5		2674

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.1			0.321	2.5	2.9

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 3C3G	2	23.64	2539	121	99.51	0.23813	0.23602	0.24	0.28532	0.3	RANDOM	19.901

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]
2.11			2.11		-4.23

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	52.556
r_dihedral_angle_3_deg	13.778
r_dihedral_angle_1_deg	6.241
r_scangle_it	4.16
r_scbond_it	2.591
r_angle_refined_deg	2.085
r_angle_other_deg	1.4
r_mcangle_it	1.375
r_mcbond_it	1.075
r_symmetry_vdw_refined	0.331
r_symmetry_hbond_refined	0.304
r_xyhbond_nbd_refined	0.265
r_symmetry_vdw_other	0.232
r_nbd_other	0.223
r_nbd_refined	0.196
r_nbtor_refined	0.175
r_mcbond_other	0.169
r_chiral_restr	0.146
r_nbtor_other	0.078
r_bond_refined_d	0.015
r_gen_planes_refined	0.01
r_bond_other_d	0.003
r_gen_planes_other	0.001
r_dihedral_angle_4_deg
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	250
Nucleic Acid Atoms
Solvent Atoms	38
Heterogen Atoms

Software

Software
Software Name	Purpose
PROTEUM PLUS	data collection
PHASER	phasing
REFMAC	refinement
PROTEUM PLUS	data reduction
PROTEUM PLUS	data scaling