Experiment: 2NSM

Crystal structure of the human carboxypeptidase N (Kininase I) catalytic domain

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1H8L	PDB Entry 1H8L

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	298	0.1M Hepes, 2M Ammonium sulfate, 5mM EDTA, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.55	65.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 150.03	α = 90
b = 150.03	β = 90
c = 54.91	γ = 120

Symmetry
Space Group	P 31 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	100	CCD	MAR CCD 165 mm	mirrors		M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MPG/DESY, HAMBURG BEAMLINE BW6	1.05	MPG/DESY, HAMBURG	BW6

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	2.1	20	99.4	0.068	0.068	15.26	3.36	41723	41723	4.37	4.37	25

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	2.17	99.4		0.28	0.28	4.37	3.35	41723

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB Entry 1H8L	2.1	20	4.37	4.37	41528	40803	2069	98.3	0.1789	0.1789	0.1816	0.2008	0.2019	27.1

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]

RMS Deviations
Key	Refinement Restraint Deviation
c_angle_deg	1.27
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3137
Nucleic Acid Atoms
Solvent Atoms	370
Heterogen Atoms	62

Software

Software
Software Name	Purpose
DNA	data collection
PHASER	phasing
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling