Experiment: 1AEO

SPECIFICITY OF LIGAND BINDING TO A BURIED POLAR CAVITY AT THE ACTIVE SITE OF CYTOCHROME C PEROXIDASE (2-AMINOPYRIDINE)

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6		20% MPD, 40 MM PHOSPHATE PH 6.0. A SINGLE CRYSTAL OF W191G WAS SOAKED IN 50MM 2-AMINOPYRIDINE IN 40% MPD AND 60 MM PHOSPHATE AT PH 4.5.

Crystal Properties
Matthews coefficient	Solvent content
3.2	61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 105.2	α = 90
b = 74.3	β = 90
c = 45.4	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	290	AREA DETECTOR	SIEMENS		1996-05-02	M

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

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	15	90	0.1	0.1	10.21	2.1		20946

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)
	2.02	2.18	78		0.25	0.6	1.85	2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1CMQ	2.1	7	19099		79		0.2375

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	2841
Nucleic Acid Atoms
Solvent Atoms	49
Heterogen Atoms	57

Software

Software
Software Name	Purpose
XTALVIEW	refinement
XENGEN	data reduction
XENGEN	data scaling