Experiment: 6LK1

Ultrahigh resolution X-ray structure of Ferredoxin I from C. reinhardtii

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION		298	Ammonium sulfate Sodium citrate Sodium thiocyanate Benzamidine Hydrochloride

Crystal Properties
Matthews coefficient	Solvent content
1.91	35.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 25.955	α = 90
b = 60.09	β = 102.4
c = 50.085	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	RAYONIX MX300HE		2015-01-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL44XU	0.9	SPring-8	BL44XU

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	0.9	37.96	99.2	0.061	12.9	4.736		109765

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	0.9	0.92	97.6		0.729	0.35	1.7	3.188

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1AWD	0.9	37.96	109765		99.2	0.1449	0.1455	0.1713	every 12th reflection was excluded for R-free calculation

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1377
Nucleic Acid Atoms
Solvent Atoms	157
Heterogen Atoms	106

Software

Software
Software Name	Purpose
SHELX	refinement
PDB_EXTRACT	data extraction
MOSFLM	data reduction
Aimless	data scaling
PHENIX	phasing