6DFR

CRYSTAL STRUCTURES OF ESCHERICHIA COLI DIHYDROFOLATE REDUCTASE. THE NADP+ HOLOENZYME AND THE FOLATE(DOT)NADP+ TERNARY COMPLEX. SUBSTRATE BINDING AND A MODEL FOR THE TRANSITION STATE

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.32	46.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.853	α = 90
b = 59	β = 90
c = 81.282	γ = 90

Symmetry
Space Group	P 21 21 21

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2.4				0.192

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	24.7
p_orthonormal_tor	21.9
p_mcangle_it	5.455
p_planar_tor	5
p_scbond_it	4.893
p_mcbond_it	3.924
p_chiral_restr	0.288
p_multtor_nbd	0.26
p_xhyhbond_nbd	0.24
p_singtor_nbd	0.204
p_planar_d	0.045
p_angle_d	0.035
p_bond_d	0.02
p_plane_restr	0.02
p_angle_deg
p_hb_or_metal_coord
p_scangle_it
p_xyhbond_nbd
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1222
Nucleic Acid Atoms
Solvent Atoms	72
Heterogen Atoms	37

Software

Software
Software Name	Purpose
PROLSQ	refinement