3B5I

Crystal structure of Indole-3-acetic Acid Methyltransferase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7	277	PEG 20,000, 1 M urea, 0.3 M KNO3, 100 mM MOPSO-Na+ and 3 mM SAH, EVAPORATION, temperature 277K, pH 7.00

Crystal Properties
Matthews coefficient	Solvent content
3.36	63.42

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.27	α = 90
b = 129.4	β = 112.3
c = 68.33	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 210	DOUBLE CRYSTAL CHANNEL CUT, SI(111), 1M LONG RH COATED TOROIDAL MIRROR FOR VERTICAL AND HORIZONTAL FOCUSING	2003-11-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X6A		NSLS	X6A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.75	50	72.4	0.116	0.094	12.14	2.97		21631

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.75	2.82	79.5		0.478	0.469	2.72	2.93

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	CLARKIA BREWERI CBSAMT (PDB CODE: 1M6E)	2.75	45.22	28223	20940	1090	74.4	0.258	0.257	0.282	RANDOM	50.85

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]
1.21		-1.3	-1.21		-0.98

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.344
r_dihedral_angle_3_deg	22.426
r_dihedral_angle_4_deg	19.748
r_dihedral_angle_1_deg	5.229
r_scangle_it	2.334
r_mcangle_it	1.847
r_angle_refined_deg	1.448
r_scbond_it	1.408
r_mcbond_it	1.02
r_symmetry_vdw_refined	0.387
r_nbtor_refined	0.317
r_symmetry_hbond_refined	0.276
r_nbd_refined	0.23
r_xyhbond_nbd_refined	0.175
r_chiral_restr	0.096
r_bond_refined_d	0.012
r_gen_planes_refined	0.004
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_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5278
Nucleic Acid Atoms
Solvent Atoms	136
Heterogen Atoms	54

Software

Software
Software Name	Purpose
XSCALE	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction