Experiment: 4LHO

Crystal Structure of FG41Malonate Semialdehyde Decarboxylase inhibited by 3-bromopropiolate

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		The ligand-free FG41 MSAD was used as the search model for molecular replacement.

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	277	The best crystals for inactivated FG41 MSAD were obtained at 4C from 6-micro liter hanging drops consisting of equal amounts of precipitant solution [0.1 M TRIS buffer, pH 8.5, 2.0 M (NH4)H2PO4] and protein solution (24.5 mg/mL in 10 mM sodium phosphate buffer, pH 8)., VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
3.43	64.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 144.227	α = 90
b = 144.227	β = 90
c = 144.227	γ = 90

Symmetry
Space Group	P 21 3

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MAR scanner 345 mm plate		2007-12-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

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	2.21	102.06	96.4	0.116			18824		1.33	2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	The ligand-free FG41 MSAD was used as the search model for molecular replacement.	2.224	45.609	1.33	96301	91715	4644	96.36	0.166	0.164	0.1787	0.2024	0.2147	Random

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	14.251
f_angle_d	1.295
f_chiral_restr	0.068
f_bond_d	0.012
f_plane_restr	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4920
Nucleic Acid Atoms
Solvent Atoms	357
Heterogen Atoms	105

Software

Software
Software Name	Purpose
MAR345dtb	data collection
CaspR	model building
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
CaspR	phasing