3SEK

Crystal Structure of the Myostatin:Follistatin-like 3 Complex

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3HH2	PDB ENTRIES 3HH2 (chain B) and 3B4V (chain C)
experimental model	PDB	3B4V	PDB ENTRIES 3HH2 (chain B) and 3B4V (chain C)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	hanging drop	7.5	293	potassium thiocyanate, PEG 3350, pH 7.5, hanging drop, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
4.39	71.97

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 82.086	α = 90
b = 82.086	β = 90
c = 312.691	γ = 120

Symmetry
Space Group	P 61 2 2

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	MARMOSAIC 300 mm CCD		2010-06-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-D	1.0	APS	23-ID-D

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	2.4	50	99.4	0.09	12.3	14.3	25404	25257		2.5

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	2.4	2.49	95.5		0.707		5.2	2379

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	PDB ENTRIES 3HH2 (chain B) and 3B4V (chain C)	2.401	35.54	25168	25168	1275	98.85	0.2469	0.2457	0.2703	RANDOM	69.9397

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]
0.07	0.04		0.07		-0.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.21
r_dihedral_angle_4_deg	19.505
r_dihedral_angle_3_deg	15.343
r_dihedral_angle_1_deg	5.652
r_scangle_it	2.302
r_scbond_it	1.255
r_angle_refined_deg	1.012
r_mcangle_it	0.764
r_mcbond_it	0.394
r_chiral_restr	0.066
r_bond_refined_d	0.007
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2324
Nucleic Acid Atoms
Solvent Atoms	59
Heterogen Atoms	14

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection