3F7H

Structure of an ML-IAP/XIAP chimera bound to a peptidomimetic

X-RAY DIFFRACTION

---

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
2.37	48.14

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 88.048	α = 90
b = 88.048	β = 90
c = 73.321	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	ADSC QUANTUM 4		2005-03-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.1	1.0	ALS	5.0.1

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	1.8	50	99.7	0.082	0.082	24.7	7.1	27379	27289		-3	23.8

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	1.8	1.86	97.4		0.457	0.457	3.4	6.4	2669

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	difference Fourier	THROUGHOUT	1.3 A STRUCTURE OF THE ML-IAP/XIAP PROTEIN BOUND TO A DIFFERENT PEPTIDOMIMETIC, WITH THE LIGAND AND SURROUNDING WATERS REMOVED	1.8	25	25926	25848	1359	99.7	0.15	0.15048	0.14921	0.17516	RANDOM	21.335

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]
-0.7			-0.7		1.41

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.561
r_dihedral_angle_3_deg	12.353
r_dihedral_angle_4_deg	11.559
r_dihedral_angle_1_deg	4.519
r_scangle_it	2.888
r_mcangle_it	2.117
r_scbond_it	1.937
r_mcbond_it	1.834
r_angle_refined_deg	1.108
r_angle_other_deg	0.842
r_mcbond_other	0.283
r_symmetry_vdw_other	0.22
r_nbd_refined	0.201
r_symmetry_vdw_refined	0.197
r_nbd_other	0.188
r_nbtor_refined	0.186
r_symmetry_hbond_refined	0.144
r_xyhbond_nbd_refined	0.103
r_nbtor_other	0.081
r_chiral_restr	0.066
r_bond_refined_d	0.01
r_gen_planes_refined	0.003
r_bond_other_d	0.001
r_gen_planes_other	0.001
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	1479
Nucleic Acid Atoms
Solvent Atoms	209
Heterogen Atoms	101

Software

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