4TIM
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
Crystallization
Crystalization Experiments | ||||
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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 | |
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Matthews coefficient | Solvent content |
2.38 | 48.31 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 112.59 | α = 90 |
b = 97.29 | β = 90 |
c = 46.7 | γ = 90 |
Symmetry | |
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Space Group | P 21 21 21 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | Mean Isotropic B | |||||||||
X-RAY DIFFRACTION | 2.4 | 15 | 17456 | 0.149 |
Temperature Factor Modeling | ||||||
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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 | |
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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 | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 3766 |
Nucleic Acid Atoms | |
Solvent Atoms | 130 |
Heterogen Atoms | 11 |
Software
Software | |
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Software Name | Purpose |
TNT | refinement |