1RU1

CRYSTAL STRUCTURE OF A TERNARY COMPLEX OF E. COLI HPPK(V83G/DEL84-89) WITH MGAMPCPP AND 6-HYDROXYMETHYL-7,8-DIHYDROPTERIN AT 1.40 ANGSTROM RESOLUTION (MONOCLINIC FORM)

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1Q0N	PDB ID 1Q0N

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	292	PEG4000, MAGNESIUM CHLORIDE, ACETATE, GLYCEROL, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 292.0K

Crystal Properties
Matthews coefficient	Solvent content
1.94	36.46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.797	α = 90
b = 68.752	β = 90.5
c = 36.491	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 4	MIRROR	2000-10-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X9B	0.97793	NSLS	X9B

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	1.4	30	93.9	0.061	13.9738	2.683	49585	49585			19.6

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)
	1.4	1.45	89		0.541	1.9363	2.521	4650

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R	PDB ID 1Q0N	1.4	30	2	4	45829	37009	2421	89.4	0.1503	0.1303	0.1354	0.1983	RANDOM	21.158

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
10	2251	2933

RMS Deviations
Key	Refinement Restraint Deviation
s_anti_bump_dis_restr	0.17
s_approx_iso_adps	0.071
s_non_zero_chiral_vol	0.058
s_similar_adp_cmpnt	0.058
s_zero_chiral_vol	0.053
s_angle_d	0.03
s_from_restr_planes	0.028
s_bond_d	0.01
s_rigid_bond_adp_cmpnt	0.003
s_similar_dist

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2373
Nucleic Acid Atoms
Solvent Atoms	481
Heterogen Atoms	95

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
SHELXL-97	refinement

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.