1QO0

Amide receptor of the amidase operon of Pseudomonas aeruginosa (AmiC) complexed with the negative regulator AmiR.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICROBATCH	5.6		CRYSTALLISATION WAS BY MICRO-BATCH AND STREAK SEEDING. WELLS CONTAINED 8-8.5% PEG4000, 20%(V/V) 2-PROPANOL, 50MM SODIUM CITRATE BUFFERED AT PH 5.6 AND AMIC-AMIR COMPLEX AT 5MG/ML (FINAL CONCENTRATION).

Crystal Properties
Matthews coefficient	Solvent content
2.96	58

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 308.44	α = 90
b = 67.15	β = 103.33
c = 76.41	γ = 90

Symmetry
Space Group	C 1 2 1

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	MARRESEARCH		1998-07-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX7.2		SRS	PX7.2

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	2.25	33.6	83.8	0.052	6.8	2.7		67099			23.6

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	2.25	2.36	69.3		0.177	3	1.5

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1PEA	2.25	20	62185	3055	83	0.186	0.256	RANDOM	9.48

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
p_transverse_tor	28.2
p_staggered_tor	18.8
p_planar_tor	6.8
p_scangle_it	4.298
p_scbond_it	3
p_mcangle_it	2.051
p_mcbond_it	1.305
p_multtor_nbd	0.255
p_singtor_nbd	0.185
p_xyhbond_nbd	0.155
p_chiral_restr	0.122
p_planar_d	0.06
p_angle_d	0.034
p_plane_restr	0.022
p_bond_d	0.01
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8798
Nucleic Acid Atoms
Solvent Atoms	851
Heterogen Atoms	12

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing