1XSN

Crystal Structure of human DNA polymerase lambda in complex with a one nucleotide DNA gap and ddTTP

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	277	Sodium Citrate, 2-propanol, sodium chloride, cacodylate, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.7	54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.043	α = 90
b = 62.551	β = 90
c = 139.83	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	MARRESEARCH		2004-07-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	0.96318	APS	22-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.95	50	94.9	0.106	15.7	7		34547		-3	26.8

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.95	2.02	95.2			6.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	THROUGHOUT	1.95	35.84	34659	33027	1632	90.3	0.215	0.213	0.213	0.255	RANDOM	47.4

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]
-5.4			4.98		0.43

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	22
c_scangle_it	4.04
c_scbond_it	2.82
c_mcangle_it	2.25
c_mcbond_it	1.37
c_angle_deg	1.2
c_improper_angle_d	0.86
c_bond_d	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2506
Nucleic Acid Atoms	425
Solvent Atoms	327
Heterogen Atoms	47

Software

Software
Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
MOLREP	phasing

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.