1E14

PHOTOSYNTHETIC REACTION CENTER MUTANT WITH PHE M197 REPLACED WITH ARG (CHAIN M, FM197R) AND GLY M203 REPLACED WITH ASP (CHAIN M, GM203D)

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	EMBL/DESY, HAMBURG BEAMLINE BW7B
Synchrotron site	EMBL/DESY, HAMBURG
Beamline	BW7B
Temperature [K]	100
Detector technology	IMAGE PLATE
Collection date	1998-05-15
Detector	MARRESEARCH
Spacegroup name	P 31 2 1
Unit cell lengths	140.000, 140.000, 184.600
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	30.000 - 2.700
R-factor	0.226 *
Rwork	0.226
R-free	0.26800
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	WILD-TYPE RHODOBACTER SPHAEROIDES COORDINATES (UNPUBLISHED DATA)
RMSD bond length	0.012
RMSD bond angle	0.038
Data reduction software	DENZO
Data scaling software	SCALEPACK
Phasing software	X-PLOR (3.1)
Refinement software	REFMAC

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	30.000	2.760
High resolution limit [Å]	2.700	2.700
Rmerge	0.081	0.388 *
Number of reflections	53597
Completeness [%]	92.6	83
Redundancy	2.8	2.4

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	Vapor diffusion, sitting drop *	7.5	16 *	Mcauley, K.E., (1998) Biochemistry, 37, 4740. *

Crystallization Reagents in Literatures

ID	crystal ID	solution	reagent name	concentration (unit)	details
1	1	drop	potassium phosphate	0.75 (M)
2	1	drop	1,4-dioxane	2 (%(v/v))
3	1	drop	heptane-1,2,3-triol	3.5 (%(w/v))
4	1	reservoir	potassium phosphate	1.6 (M)