3Q8K

Crystal Structure of Human Flap Endonuclease FEN1 (WT) in complex with product 5'-flap DNA, SM3+, and K+

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	SSRL BEAMLINE BL11-1
Synchrotron site	SSRL
Beamline	BL11-1
Temperature [K]	90
Detector technology	CCD
Collection date	2010-04-01
Detector	MARMOSAIC 325 mm CCD
Wavelength(s)	0.9796
Spacegroup name	P 31 2 1
Unit cell lengths	105.438, 105.438, 105.064
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	34.460 - 2.200
R-factor	0.1702
Rwork	0.168
R-free	0.21260
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	1rxw
RMSD bond length	0.012
RMSD bond angle	0.864
Data reduction software	MOSFLM
Data scaling software	SCALA (3.2.25)
Phasing software	PHASER
Refinement software	PHENIX (1.7_629)

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	34.462	34.503	2.320
High resolution limit [Å]	2.200	6.960	2.200
Rmerge	0.083	0.049	0.557
Number of reflections	34291
<I/σ(I)>	7.5	13	0.6
Completeness [%]	99.1	79.5	100
Redundancy	3.6	3.4	3.6

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION	7	288	16% mPEG 2k, 20% saturated KCl, 0.5 mM Sm2(SO4)3, 10 mM Mg(NO3)2, 100 mM Hepes pH 7.0, 5% ethylene glycol, VAPOR DIFFUSION, temperature 288K
1	VAPOR DIFFUSION	7	288	16% mPEG 2k, 20% saturated KCl, 0.5 mM Sm2(SO4)3, 10 mM Mg(NO3)2, 100 mM Hepes pH 7.0, 5% ethylene glycol, VAPOR DIFFUSION, temperature 288K