2DOH

The X-ray crystallographic structure of the angiogenesis inhibitor, angiostatin, bound a to a peptide from the group A streptococcal surface protein PAM

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1KI0	PDB entry 1KI0

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		298	20% PEG 8000, 0.1M potassium phosphate (dihydrate), 5% dioxane, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.16	61.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 58.377	α = 90
b = 58.377	β = 90
c = 391.033	γ = 120

Symmetry
Space Group	P 61 2 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	MAR CCD 165 mm		2000-03-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-ID	1.0	APS	17-ID

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	2	50	80.2	0.091	12.4			22779		-3

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	2	2.07	19.1		0.834			524

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1KI0	2.3	15	17617	1775	93.82	0.215	0.21	0.21	0.26	RANDOM	24.651

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]
1.57	0.79		1.57		-2.36

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	7.187
r_scangle_it	4.74
r_scbond_it	3.516
r_mcangle_it	2.279
r_angle_other_deg	1.557
r_angle_refined_deg	1.474
r_mcbond_it	1.405
r_symmetry_hbond_refined	0.428
r_symmetry_vdw_other	0.344
r_xyhbond_nbd_refined	0.337
r_nbd_other	0.276
r_nbd_refined	0.261
r_symmetry_vdw_refined	0.198
r_nbtor_other	0.099
r_chiral_restr	0.079
r_bond_refined_d	0.014
r_bond_other_d	0.005
r_gen_planes_refined	0.005
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1521
Nucleic Acid Atoms
Solvent Atoms	311
Heterogen Atoms	6

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction