Experiment: 6P7C

D104A/S128A S. typhimurium siroheme synthase

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5		4-14% PEG 4000, 100 mM 2-(N-morpholino)ethanesulfonic acid (MES) pH 5.0, 500mM sodium chloride, 7 mM 2-Mercaptoethanol (BME), microseeded

Crystal Properties
Matthews coefficient	Solvent content
2.25	45.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.94	α = 90
b = 99.913	β = 90
c = 147.545	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	RAYONIX MX300-HS		2017-10-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.0	APS	22-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	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	2.75	50	99.8	0.491	0.512	0.142	4.9	12.5		23599			51.78

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.75	2.8	98.7		1.462	1.557	0.522	0.611		8.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1PJS	2.76	42.17	1.34	23510	1997	99.53	0.1929	0.1843	0.1845	0.2851	0.2807	59.16

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	16.0172
f_angle_d	1.03
f_chiral_restr	0.058
f_bond_d	0.0078
f_plane_restr	0.0053

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6963
Nucleic Acid Atoms
Solvent Atoms	48
Heterogen Atoms	1

Software

Software
Software Name	Purpose
PHENIX	refinement
HKL-2000	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction
HKL-2000	data reduction