2MYE | pdb_00002mye

HIGH RESOLUTION X-RAY STRUCTURES OF MYOGLOBIN-AND HEMOGLOBIN-ALKYL ISOCYANIDE COMPLEXES

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				THE PH IN THIS CRYSTAL IS WEAKLY BUFFERED (10 MM PHOSPHATE) AND THE STRUCTURE INDICATES THAT THE PH MAY HAVE FALLEN TO PH 6 OR BELOW. THE RESIDUE HIS 64 MAY BE DOUBLY PROTONATED. COMPARE THIS STRUCTURE WITH THE WELL-BUFFERED (100 MM PHOSPHATE) PH 7.0 MYOGLOBIN-ETHYL ISOCYANIDE STRUCTURE (PROTEIN DATA BANK ENTRY 2MYB).

Crystal Properties
Matthews coefficient	Solvent content
1.95	36.88

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.64	α = 90
b = 30.95	β = 106.08
c = 34.95	γ = 90

Symmetry
Space Group	P 1 21 1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION		1.68	5			0.172	0.172

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
x_angle_deg	1.751
x_bond_d	0.02
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1217
Nucleic Acid Atoms
Solvent Atoms	185
Heterogen Atoms	52

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing