1E81 | pdb_00001e81

Endothiapepsin complex with renin inhibitor MERCK-KGAA-EMD61395

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4APE	PDB ENTRY 4APE

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5		BATCH METHOD PROTEIN: 10MG/ML, 50 MM AMMONIUM ACETATE PH 5.0, ~2.2 M AMMONIUM SULPHATE, 1% ACETONE. INHIBITOR WAS ADDED IN A 10:1 STOICHIOMETRIC RATIO.

Crystal Properties
Matthews coefficient	Solvent content
2.48	50.33

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.47	α = 90
b = 73.58	β = 110.14
c = 45.34	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	IMAGE PLATE	MARRESEARCH			M	SINGLE WAVELENGTH

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

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	2.05	30	94.8	0.125	4.8	3.8		20712

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	2.05	2.29	89.2		0.379	1.9	3.7

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-Work (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 4APE	2.05	30	20712		94.9	0.194	0.234

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2389
Nucleic Acid Atoms
Solvent Atoms	148
Heterogen Atoms	46

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
ROTAVATA	data scaling