2GMR

Photosynthetic reaction center mutant from Rhodobacter sphaeroides with Asp L210 replaced with Asn

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8	301	20% PEG 4000, 100mM Tris-Cl, 750mM NaCl, 3% 1,2,3-heptanetriole, 0.12% LDAO, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 301.0K, pH 8.00

Crystal Properties
Matthews coefficient	Solvent content
3.91	68.51

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.85	α = 90
b = 134.72	β = 90
c = 141.64	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	MARMOSAIC 225 mm CCD		2005-09-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA		SLS	X10SA

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	2.5	38.433	97.4	0.056	24.49			50281			31.4

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.5	2.6	99.3		0.334	6.35

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-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1AIG	2.5	38.43	50281	2514	97.3	0.215	0.215	0.25	RANDOM	47

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]
-9.86			25.46		-15.6

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	21.4
c_improper_angle_d	3.89
c_scangle_it	3.36
c_scbond_it	2.61
c_mcangle_it	1.89
c_angle_deg	1.4
c_mcbond_it	1.15
c_bond_d	0.007
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6478
Nucleic Acid Atoms
Solvent Atoms	180
Heterogen Atoms	628

Software

Software
Software Name	Purpose
XSCALE	data scaling
MOLREP	phasing
CNS	refinement
PDB_EXTRACT	data extraction
XDS	data reduction