1E8C | pdb_00001e8c

Structure of MurE the UDP-N-acetylmuramyl tripeptide synthetase from E. coli

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5		HANGING DROP EXPERIMENT RESERVOIR: 13% PEG MME 5K, 0.5M LICL, 10% ISOPROPANOL, 0.1M HEPES PH 7.5, 5MM DTT, 1MM UDP-TRIPEPTIDE DROP: 2UL PROTEIN SOLUTION (MURE @ 10MGML-1 IN 20MM HEPES PH 7.5, 200MM NACL, 5MM DTT) WITH 2UL RESERVOIR SOLUTION.

Crystal Properties
Matthews coefficient	Solvent content
2.8	47

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 93.465	α = 90
b = 99.69	β = 90
c = 236.146	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	110	CCD	MARRESEARCH		1999-11-15	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM14	0.9791,0.9790,0.8550,0.93	ESRF	BM14

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	46.7	98.3	0.066		4.5		323548			19.3

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	2.13	91.2		0.22		3.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	MAD	THROUGHOUT	2	46.73	72674	7348	98	0.202	0.202	0.2	0.23	0.23	RANDOM	34.4

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]
1.81			-0.95		-0.87

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.5
c_angle_deg	1.3
c_improper_angle_d	0.78
c_bond_d	0.006
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
c_mcbond_it
c_mcangle_it
c_scbond_it
c_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7528
Nucleic Acid Atoms
Solvent Atoms	393
Heterogen Atoms	141

Software

Software
Software Name	Purpose
CNS	refinement
DENZO	data reduction
XDS	data reduction
SCALEPACK	data scaling
SCALA	data scaling
SOLVE	phasing