1IRW

CYTOCHROME C ISOZYME 1, REDUCED, MUTANT WITH ASN 52 REPLACED BY ALA AND CYS 102 REPLACED BY THR

X-RAY DIFFRACTION

---

Crystallization

Crystal Properties
Matthews coefficient	Solvent content
1.9	35.16

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 36.52	α = 90
b = 36.52	β = 90
c = 137.39	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		DIFFRACTOMETER	ENRAF-NONIUS FAST		1992-10-25	M

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

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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		100		1		6933

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2	6	2	4146			0.183		17.9

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
p_staggered_tor	25.9
p_transverse_tor	19.1
p_scangle_it	3.617
p_planar_tor	2.6
p_mcangle_it	2.422
p_scbond_it	2.383
p_mcbond_it	1.63
p_xyhbond_nbd	0.245
p_singtor_nbd	0.219
p_multtor_nbd	0.207
p_chiral_restr	0.196
p_planar_d	0.052
p_angle_d	0.044
p_bond_d	0.02
p_plane_restr	0.016
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	848
Nucleic Acid Atoms
Solvent Atoms	48
Heterogen Atoms	48

Software

Software
Software Name	Purpose
PROLSQ	refinement
IN-HOUSE	data reduction