2PEF

Crystal Structure of a Thermophilic Serpin, Tengpin, in the Latent State

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5	294	28% PEG 400, 0.1 M Na Hepes, 0.2 M Calcium Chloride, VAPOR DIFFUSION, HANGING DROP, temperature 294K, pH 7.5

Crystal Properties
Matthews coefficient	Solvent content
1.89	35.04

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 44.762	α = 90
b = 44.907	β = 90
c = 159.233	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	100	CCD	ADSC QUANTUM 4		2004-09-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C		APS	14-BM-C

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	1.6	79	98.4	0.076	20.1	5.4		42797		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	1.6	1.66	98.1		0.351	1.6	1.6

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1SNG, THERMOPIN	1.6	79	40547	2138	98.5	0.208	0.206	0.253	RANDOM	17.58

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]
-0.08			0.23		-0.16

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.556
r_dihedral_angle_4_deg	13.638
r_dihedral_angle_3_deg	11.854
r_dihedral_angle_1_deg	5.091
r_scangle_it	3.036
r_scbond_it	2.202
r_mcangle_it	1.281
r_angle_refined_deg	0.999
r_mcbond_it	0.799
r_nbtor_refined	0.3
r_nbd_refined	0.178
r_symmetry_vdw_refined	0.155
r_xyhbond_nbd_refined	0.099
r_symmetry_hbond_refined	0.089
r_chiral_restr	0.072
r_bond_refined_d	0.006
r_gen_planes_refined	0.003
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2841
Nucleic Acid Atoms
Solvent Atoms	484
Heterogen Atoms

Software

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