2MPR

MALTOPORIN FROM SALMONELLA TYPHIMURIUM

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP			MALTOPORIN WAS CRYSTALLIZED BY HANGING-DROP METHOD. DROP: 5-8 MG/ML PROTEIN, 0.3% C8E4, 0.8% C6DAO, 1 MM CACL2, 1MM MGCL2, 14-18% PEG 1500, 0.02% NAN3 RESERVOIR: 28-32% PEG 1500, vapor diffusion - hanging drop

Crystal Properties
Matthews coefficient	Solvent content
4.3	71

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 124.5	α = 90
b = 211.8	β = 90
c = 184.3	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	AREA DETECTOR	SIEMENS-NICOLET X100		1995-09-04	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	MACSCIENCE M18X

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	2.4	25		0.07	12	3.1		90607			36

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)
	2.4	2.48	62.4		0.167	4.3	1.4

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, EXCEPT FOR VERY LAST ROUND (REFINEMENT AGAINST ALL REFLECTIONS)	PDB ENTRY 1MPR	2.4	10	82445	4219	88.1	0.191	0.191	0.222	RANDOM	26.7

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
x_dihedral_angle_d	27.4
x_angle_deg	1.62
x_improper_angle_d	1.16
x_bond_d	0.01
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10056
Nucleic Acid Atoms
Solvent Atoms	560
Heterogen Atoms	103

Software

Software
Software Name	Purpose
XDS	data scaling
XSCALE	data scaling
AMoRE	phasing
RAVE	model building
X-PLOR	model building
X-PLOR	refinement
XDS	data reduction
RAVE	phasing
X-PLOR	phasing