4TIM | pdb_00004tim

CRYSTALLOGRAPHIC AND MOLECULAR MODELING STUDIES ON TRYPANOSOMAL TRIOSEPHOSPHATE ISOMERASE: A CRITICAL ASSESSMENT OF THE PREDICTED AND OBSERVED STRUCTURES OF THE COMPLEX WITH 2-PHOSPHOGLYCERATE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				THE CRYSTALS USED FOR THIS STRUCTURE DETERMINATION WERE GROWN IN THE PRESENCE OF 2.4M AMMONIUM SULFATE (SEE PROTEIN DATA BANK ENTRIES 2TIM AND 5TIM), BUT BEFORE DATA COLLECTION THESE CRYSTALS WERE TRANSFERRED TO A MOTHER LIQUOR WITHOUT SULFATE CONTAINING 30MM 2-PHOSPHOGLYCERATE. THE ACTIVE SITE OF CHAIN *A* ("OPEN"-CONFORMATION) HAS NO BOUND 2-PHOSPHOGLYCERATE. THE ACTIVE SITE OF CHAIN *B* ("CLOSED"-CONFORMATION) HAS A BOUND 2-PHOSPHOGLYCERATE.

Crystal Properties
Matthews coefficient	Solvent content
2.38	48.31

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 112.59	α = 90
b = 97.29	β = 90
c = 46.7	γ = 90

Symmetry
Space Group	P 21 21 21

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION		2.4	15	17456			0.149

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_bond_d	0.013
t_angle_deg
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it
t_nbd

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3766
Nucleic Acid Atoms
Solvent Atoms	130
Heterogen Atoms	11

Software

Software
Software Name	Purpose
TNT	refinement