1QB1

Bovine Trypsin with 1-[2-[5-[amino(imino)methyl]-2-hydroxyphenoxy]-6-[3-(4,5-dihydro-1-methyl-1H-imidazol-2-yl)phenoxy]pyridin-4-yl]piperidine-3-carboxylic Acid (ZK-806974)

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.4	297	MICROCRYSTALS WERE INITIALLY GROWN USING THE HANGING DROP METHOD IN LINBRO CULTURE PLATES. REFERENCES 7 (BODE, TURK & STURZEBACHER) AND 8 (BARTUNIK, SUMMERS & BARTSH) HAVE DESCRIBED THE CRYSTALLIZATION OF THE ORTHORHOMBIC FORM OF BOVINE TRYPSIN. CRYSTALS WERE SEEDING INTO DROPS CONTAINING 40 MG/ML BOVINE TRYPSIN, 0.0125 M BENZAMIDINE, 0.7 TO 0.9 M AS, 0.05 M MES PH 6.0, 0.0025 M CACL2 AFTER EQUILIBRATION AGAINST THE CRYSTALLIZATION RESERVOIR FOR 1 DAY. THE CRYSTALLIZATION RESERVOIRS CONTAINED 1.4 TO 1.8 M AS, 0.1 M MES PH 6.0, 0.005 M CACL2., pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 297K

Crystal Properties
Matthews coefficient	Solvent content
3	58.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.16	α = 90
b = 63.78	β = 90
c = 69.35	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	297	IMAGE PLATE	MARRESEARCH	MIRRORS	1995-04-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	SIEMENS

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	1.8	10	99	0.078	16.2	3.4		26263		2

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)
	1.8	1.9	99.9		0.222	3.11	3.11

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	DIRECT REPLACEMENT	THROUGHOUT	1.8	10	2	22476	21586	890	99	0.183	0.237

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	21.3
p_staggered_tor	16.2
p_scangle_it	4.552
p_scbond_it	3.135
p_planar_tor	3
p_mcangle_it	2.429
p_mcbond_it	1.628
p_xyhbond_nbd	0.228
p_multtor_nbd	0.214
p_singtor_nbd	0.167
p_chiral_restr	0.165
p_planar_d	0.044
p_angle_d	0.03
p_bond_d	0.016
p_plane_restr	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	1635
Nucleic Acid Atoms
Solvent Atoms	218
Heterogen Atoms	42

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PROFFT	refinement