2I3H

Structure of an ML-IAP/XIAP chimera bound to a 4-mer peptide (AVPW)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	Lithium sulfate, PEG 3350, Bis-tris, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.29	46.26

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 87.541	α = 90
b = 87.541	β = 90
c = 73.876	γ = 90

Symmetry
Space Group	P 41 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	100	CCD	SBC		2003-08-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-BM	1.0332	APS	19-BM

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	1.62	50	87.2	0.068	20.9	5.9	37115	32349		-3	16

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)
	1.62	1.68	38.5		0.406	1.7	0.7	1397

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	THROUGHOUT	1.3 A structure of the ML-IAP/XIAP protein bound to a different peptidomimetic, with the ligand and surrounding waters removed	1.62	20	37021	30666	1631	87.24	0.16185	0.16185	0.16093	0.17965	RANDOM	9.726

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]
-0.64			-0.64		1.28

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	4.523
r_scangle_it	2.679
r_mcangle_it	2.176
r_scbond_it	1.842
r_mcbond_it	1.421
r_angle_refined_deg	1.132
r_sphericity_bonded	1.131
r_sphericity_free	1.038
r_rigid_bond_restr	0.866
r_angle_other_deg	0.748
r_nbd_other	0.234
r_symmetry_vdw_other	0.23
r_nbd_refined	0.202
r_xyhbond_nbd_refined	0.201
r_symmetry_hbond_refined	0.193
r_symmetry_vdw_refined	0.097
r_nbtor_other	0.08
r_chiral_restr	0.068
r_bond_refined_d	0.009
r_gen_planes_refined	0.005
r_gen_planes_other	0.005
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1562
Nucleic Acid Atoms
Solvent Atoms	233
Heterogen Atoms	25

Software

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