1CA8

Thrombin inhibitors with rigid tripeptidyl aldehydes

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1TMB	PDB ENTRY 1TMB

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5		CRYSTALLIZED FROM 25% PEG 8K, 0.1M SOD, PHOSPHATE BUFFER PH 7.5, MACROSEEDED TO MAKE LARGER CRYSTALS

Crystal Properties
Matthews coefficient	Solvent content
2.5	51

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 71.13	α = 90
b = 72.12	β = 100.8
c = 73.14	γ = 90

Symmetry
Space Group	C 1 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	300	IMAGE PLATE	RIGAKU		1995-08-21	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
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		61	0.052	0.12	14.4	2		18157		2.5

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	2.1	2.3	74		0.09	0.25	2.5	2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1TMB	2.1	7	4	16839		75	0.157		20.7

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]

RMS Deviations
Key	Refinement Restraint Deviation
p_transverse_tor	30
p_staggered_tor	20
p_planar_tor	4
p_scangle_it	3.8
p_scbond_it	2.6
p_mcangle_it	1.8
p_mcbond_it	1.1
p_multtor_nbd	0.31
p_xyhbond_nbd	0.28
p_singtor_nbd	0.22
p_chiral_restr	0.15
p_planar_d	0.055
p_angle_d	0.035
p_plane_restr	0.027
p_bond_d	0.015
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2240
Nucleic Acid Atoms
Solvent Atoms	134
Heterogen Atoms	37

Software

Software
Software Name	Purpose
R-AXIS	data collection
R-AXIS	data reduction
X-PLOR	model building
PROLSQ	refinement
X-PLOR	refinement
R-AXIS	data scaling
X-PLOR	phasing