Experiment: 3B7T

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1H19	pdb entry 1H19

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	liquid-liquid diffusion		298	TRI-PEPTIDE WAS CO-CRYSTALLIZED WITH [E296Q]LTA4H BY LIQUID-LIQUID DIFFUSION IN MELTING-POINT CAPILLARIES. A TRIS-BUFFERED (10 mM, PH 7.5) SOLUTION OF PROTEIN AND TRIPEPTIDE, MOLAR RATIO 1:10 (~70 MICROM PROTEIN), WAS LAYERED ON THE PRECIPITATE SOLUTION CONTAINING 28% (WEIGHT/VOLUME) POLYETHYLENE GLYCOL (MW 8000), 50 mM NA ACETATE, 100 mM IMIDAZOLE, PH 6.8, AND 5 MM YBCL3. CRYSTALS WERE ADDITIONALLY SOAKED IN SOLUTIONS WITH INCREASED TRI-PEPTIDE CONCENTRATION PRIOR TO DATA COLLECTION, liquid-liquid diffusion, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.44	49.64

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.49	α = 90
b = 87.785	β = 90
c = 99.916	γ = 90

Symmetry
Space Group	P 21 21 21

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	MARMOSAIC 225 mm CCD		2005-10-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I711	0.97	MAX II	I711

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	43.42	96.6	0.125	7.45		57197	57220		-3	37.1

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)
	2.3	2.5	97.7		0.801	2.8	2.54	3665

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION		THROUGHOUT	pdb entry 1H19	2.3	30	59235	57183	1902	96.5	0.206	0.273	RANDOM	49.7

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]
4.92			-5.86		0.94

RMS Deviations
Key	Refinement Restraint Deviation
x_torsion_deg	22.7
x_angle_deg	1.3
x_torsion_impr_deg	0.85
x_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4903
Nucleic Acid Atoms
Solvent Atoms	31
Heterogen Atoms	8

Software

Software
Software Name	Purpose
XSCALE	data scaling
CNS	refinement
PDB_EXTRACT	data extraction
MAR345dtb	data collection
XDS	data reduction
XDS	data scaling
XFIT	data reduction

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.