The model cyanobacteria Anabaena sp. PCC 7120 possess an intact but partially degenerated gene cluster encoding gas vesicles

Table 1 Crystal parameters, data collection, and structure refinement

	GvpF
Data collection
Space group	C222₁
Unit cell parameters
a, b, c (Å)	96.40, 147.09, 106.58
α, β, γ (°)	90.00, 90.00, 90.00
Resolution range (Å)	50.00–2.55 (2.62–2.55)^a
Unique reflections	24, 900 (2, 440)
Completeness (%)	99.9 (100)
<I/σ(I)>	16.3 (2.9)
R_merge^b (%)	10.6 (69.1)
Average redundancy	10.9 (10.9)
Structure refinement
Resolution range (Å)	44.46–2.55
R_factor^c/R_free^d (%)	19.57/25.61
Number of protein atoms	3, 962
Number of water atoms	28
RMSD^e bond lengths (Å)	0.015
RMSD bond angles (°)	1.709
Mean B factors (Å²)	53.189
Ramachandran plot (residues, %)^f
Most favored	95.80
Allowed	4.00
Outliers	0.20
Protein Data Bank entry	6L5D

^a Highest resolution shell is shown in parenthesis. R_sym = Σ_hΣ_i|I_h,i − I_h|/Σ_hΣ_iI_h,i, where I_h is the mean intensity of the i observations of symmetry related reflections of h. R = Σ|F_obs − F_calc|/ΣF_obs, where F_obs = F_p, and F_calc is the calculated protein structure factor from the atomic model. RMSD in bond lengths and angles are the deviations from ideal values

ISSN: 1471-2180