2V2D

The A178L mutation in the C-terminal hinge of the flexible loop-6 of triosephosphate isomerase (TIM) induces a more closed conformation of this hinge region in dimeric and monomeric TIM

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1ML1	PDB ENTRY 1ML1

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8.2		1.75 M (NH4)2PO4, PH 8.2

Crystal Properties
Matthews coefficient	Solvent content
2.56	52.02

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 95.23	α = 90
b = 95.23	β = 90
c = 48.82	γ = 120

Symmetry
Space Group	P 63

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MARRESEARCH	FLAT PRE-MIRROR AND BENT, VERTICALLY FOCUSSING	2004-11-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7B		EMBL/DESY, HAMBURG	BW7B

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2.3	25	99.2	0.08	24.45	12.1		11321		3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.3	2.35	99.9		0.22	13.03	12.44

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1ML1	2.3	19.22	10755	565	100	0.204	0.201	0.27	RANDOM	16.92

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]
-1.87	-0.94		-1.87		2.81

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.394
r_dihedral_angle_4_deg	18.613
r_dihedral_angle_3_deg	17.989
r_dihedral_angle_1_deg	6.197
r_scangle_it	2.349
r_scbond_it	1.632
r_angle_refined_deg	1.458
r_mcangle_it	0.97
r_mcbond_it	0.598
r_symmetry_hbond_refined	0.332
r_nbtor_refined	0.301
r_nbd_refined	0.227
r_symmetry_vdw_refined	0.193
r_xyhbond_nbd_refined	0.166
r_chiral_restr	0.102
r_bond_refined_d	0.015
r_gen_planes_refined	0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1829
Nucleic Acid Atoms
Solvent Atoms	133
Heterogen Atoms	5

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
MOLREP	phasing