2VSQ

Structure of surfactin A synthetase C (SrfA-C), a nonribosomal peptide synthetase termination module

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1AMU	PDB ENTRIES 1AMU AND 2JGP
experimental model	PDB	2JGP	PDB ENTRIES 1AMU AND 2JGP

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5		0.1 M MGCL2, 0.05 M HEPES (PH 7.5), 15 % (W/V) PEG 2000

Crystal Properties
Matthews coefficient	Solvent content
2.87	56.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 83.106	α = 90
b = 106.562	β = 97.35
c = 92.401	γ = 90

Symmetry
Space Group	P 1 21 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	CCD	ADSC CCD		2007-07-14	M	MAD
2	1	x-ray						M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2		ESRF	ID14-2
2	SYNCHROTRON	SLS BEAMLINE X06SA	0.9794, 0.9792, 0.9717	SLS	X06SA

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	2.6	82.5	93	0.04	12.9	2.2		45564		-3	79.2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.6	2.67	68		0.48	2

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	MAD	THROUGHOUT	PDB ENTRIES 1AMU AND 2JGP	2.6	82.5	44479	1040	93.1	0.215	0.213	0.272	RANDOM	59.23

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]
-1.59		-0.03	-0.53		2.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.327
r_dihedral_angle_3_deg	19.167
r_dihedral_angle_4_deg	18.264
r_dihedral_angle_1_deg	7.014
r_scangle_it	1.408
r_angle_refined_deg	1.272
r_scbond_it	0.929
r_angle_other_deg	0.878
r_mcangle_it	0.765
r_mcbond_it	0.463
r_nbd_refined	0.228
r_symmetry_vdw_other	0.202
r_nbd_other	0.188
r_nbtor_refined	0.186
r_symmetry_vdw_refined	0.162
r_xyhbond_nbd_refined	0.151
r_symmetry_hbond_refined	0.134
r_nbtor_other	0.089
r_chiral_restr	0.071
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10056
Nucleic Acid Atoms
Solvent Atoms	39
Heterogen Atoms	14

Software

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