4R7Y

Crystal structure of an active MCM hexamer

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2VL6	SsoMCM N-terminal domain (2VL6), PfMCM ATPase domain (related entry 4R7Z)
experimental model	PDB	4R7Z	SsoMCM N-terminal domain (2VL6), PfMCM ATPase domain (related entry 4R7Z)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.6	281	10.8 mg/mL Sso-PfMCM; 5 mM ADP mixed 1:1 with 100 mM HEPES, pH 7.6; 350 mM MgCl2; 3 % (w/v) PEG 3350, VAPOR DIFFUSION, HANGING DROP, temperature 281K

Crystal Properties
Matthews coefficient	Solvent content
2.93	57.98

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 118.902	α = 90
b = 118.902	β = 90
c = 199.317	γ = 120

Symmetry
Space Group	P 63

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	RAYONIX MX300HS		2014-04-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.0	APS	22-ID

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	2.7	50	99.8	0.107	14.8	6.8	43407	43329		-3	29.3

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	2.7	2.8	98.3		0.75	1.79	5	4313

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	SsoMCM N-terminal domain (2VL6), PfMCM ATPase domain (related entry 4R7Z)	2.7	49.83	39044	1976	89.7	0.263	0.263	0.295	RANDOM	61.3

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]
-2.32			-2.32		4.65

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	24.1
c_scangle_it	2.75
c_mcangle_it	2.6
c_scbond_it	1.73
c_angle_deg	1.5
c_mcbond_it	1.46
c_improper_angle_d	1.1
c_bond_d	0.01
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

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9430
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	64

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling