1B5M

RAT OUTER MITOCHONDRIAL MEMBRANE CYTOCHROME B5

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3B5C	PDB ENTRY 3B5C

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	vapor diffusion with slow evaporation	6.5		CRYSTALS WERE OBTAINED BY VAPOR DIFFUSION TOGETHER WITH SLOW EVAPORATION USING 20% PEG 8000 IN 0.1M SODIUM CACODYLATE (PH = 6.5 WITH 0.2 M MAGNESIUM ACETATE., vapor diffusion with slow evaporation

Crystal Properties
Matthews coefficient	Solvent content
2.56	52.02

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 30	α = 90
b = 30	β = 90
c = 219	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	298	AREA DETECTOR	SIEMENS		1996-04-18	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 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	2.7	20	96	0.049	1.5	2.5		3123			36

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)
	2.7	3.05	85		0.088	1	4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 3B5C	2.7	20	3123	3123	3123	96	0.22

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
t_dihedral_angle_d	20
t_it	4.99
t_angle_deg	2.9
t_nbd	0.023
t_bond_d	0.016
t_gen_planes	0.012
t_trig_c_planes	0.007
t_incorr_chiral_ct
t_pseud_angle

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	676
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	43

Software

Software
Software Name	Purpose
MRCHK	model building
TNT	refinement
FRAMBO	data reduction
SADIE	data reduction
SAINT	data scaling
MRCHK	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.