7NWC

CRYSTAL STRUCTURE OF HUMAN CYTOSOLIC BRANCHED-CHAIN AMINOTRANSFERASE (BCAT1) IN COMPLEX WITH PLP AND INHIBITOR COMPOUND 2

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	BESSY BEAMLINE 14.1
Synchrotron site	BESSY
Beamline	14.1
Temperature [K]	100
Detector technology	PIXEL
Collection date	2016-08-17
Detector	DECTRIS PILATUS3 6M
Wavelength(s)	0.9184
Spacegroup name	P 1 21 1
Unit cell lengths	81.069, 110.431, 107.043
Unit cell angles	90.00, 103.20, 90.00

Refinement procedure

Resolution	45.240 - 2.380
R-factor	0.2218
Rwork	0.221
R-free	0.26260
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	2abj
RMSD bond length	0.004
RMSD bond angle	1.243
Data reduction software	XDS (May 1, 2016)
Data scaling software	pointless (1.10.13)
Phasing software	PHASER
Refinement software	REFMAC (5.8.0267)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	47.120	2.520
High resolution limit [Å]	2.380	2.380
Rmeas	0.219	0.911
Number of reflections	72443	11366
<I/σ(I)>	6.45	1.65
Completeness [%]	98.5	96.2
Redundancy	3.44	3.49
CC(1/2)	0.983	0.639

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	8	293	PROTEIN AT 17 MG/ML IN 10 MILLIMOLAR TRIS-HCL PH 8.0, 100 MILLIMOLAR NACL, 3 MILLIMOLAR DTT. PROTEIN PREINCUBATED OVER NIGHT AT 293 K WITH 10 MILLIMOLAR 3-PHENYL-PROPIONATE, 3 MILLIMOLAR DTT AND 1.5 MILLIMOLAR PLP. DROPS MADE FROM 1 MICROLITER PROTEIN AND 1 MICROLITER RESERVOIR (225 MILLIMOLAR MGCL2, 16-20 % (W/V) PEG 3350). INHIBITOR SOAKED INTO PREFORMED CRYSTALS FOR 5 DAYS AT 10 MILLIMOLAR. CRYO: RESERVOIR SOLUTION COMPLEMENTED WITH 20 % (V/V) GLYCEROL AND 10 MILLIMOLAR INHIBITOR