1V6D

The crystal structure of the trypsin complex with synthetic heterochiral peptide

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.4	293	2M ammonium sulphate, pH 6.4, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.87	33.75

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.93	α = 90
b = 53.719	β = 90
c = 77.473	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	293	IMAGE PLATE	MARRESEARCH		2003-08-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.5418

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	1.9	44.28	94.2	0.069			15129	15129

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.9	1.97	94.2				15129

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	MOLECULAR REPLACEMENT	THROUGHOUT	1QQU	1.9	44.28	14361	14361	740	94.28	0.15453	0.15453	0.15324	0.17849	RANDOM	17.1

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]
-0.77			0.33		0.44

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	19.04
r_scangle_it	6.527
r_scbond_it	4.44
r_dihedral_angle_1_deg	4.271
r_angle_refined_deg	3.554
r_mcangle_it	2.545
r_angle_other_deg	1.956
r_mcbond_it	1.397
r_symmetry_vdw_refined	0.841
r_symmetry_vdw_other	0.536
r_symmetry_hbond_refined	0.427
r_nbd_refined	0.42
r_xyhbond_nbd_refined	0.254
r_nbd_other	0.252
r_nbtor_other	0.202
r_chiral_restr	0.142
r_symmetry_hbond_other	0.068
r_xyhbond_nbd_other	0.065
r_bond_refined_d	0.024
r_gen_planes_refined	0.01
r_gen_planes_other	0.006
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1690
Nucleic Acid Atoms
Solvent Atoms	162
Heterogen Atoms	12

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing