2BF9

Anisotropic refinement of avian (turkey) pancreatic polypeptide at 0. 99 Angstroms resolution.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7		5MG/ML POLYPEPTIDE IN 0.1M TRIS-HCL BUFFER, 0.001M ZN(OAC)2, pH 7.00

Crystal Properties
Matthews coefficient	Solvent content
1.8	31.14

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.18	α = 90
b = 32.92	β = 105.26
c = 28.45	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	293	Y290 SCINTILLATION COUNTER	HILGER-WATTS	HELIUM PATH	1983-01-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	HILGER-WATTS 1.2KW

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	0.99	27.45	94.7	0.06		3.2		17058

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	SIRAS	FREE R-VALUE	0.99	27.45	17058	852	94.72	0.1371	0.1368		0.1794	RANDOM

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
1	281	382.5

RMS Deviations
Key	Refinement Restraint Deviation
s_zero_chiral_vol	0.093
s_non_zero_chiral_vol	0.082
s_angle_d	0.026
s_from_restr_planes	0.0198
s_bond_d	0.013
s_anti_bump_dis_restr	0.013
s_rigid_bond_adp_cmpnt	0.007
s_similar_dist
s_similar_adp_cmpnt
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	301
Nucleic Acid Atoms
Solvent Atoms	82
Heterogen Atoms	1

Software

Software
Software Name	Purpose
SHELXL-97	refinement
ON-LINE	data reduction
HRS	data scaling
CCP4	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.