Table 2.

Best-fit parameters for angular distributions describing FtsZ-filament orientation in the Z-ring with respect to the cell-axial and circumferential directions

In vivo FtsZ orientation	c	d	${\beta }_0$	${\gamma }_0$
E. coli FtsZ-YFP axial	4.98	1.10	0°	0°
E. coli FtsZ-YFP circumferential	5.00	0.00	0°	0°
E. coli FtsZ-GFP axial	5.00	0.11	0°	0°
E. coli FtsZ-GFP circumferential	5.00	0.06	0°	0°
E. coli GFP-FtsZ axial	5.00	0.28	0°	0°
E. coli GFP-FtsZ circumferential	5.00	0.00	0°	0°
C. crescentus FtsZ-YFP axial	5.00	0.00	0°	0°
C. crescentus FtsZ-YFP circumferential	0.00	4.93	0°	0°

Angular distributions are given by Eqs. 11 and 12. We use two different average orientations, axial and circumferential. The fitted parameters indicate broad angular distributions and are consistent with each other. The pictorial representations of these distributions are shown in Fig. 5 and in the Supporting Material. Parameters c and d are the widths of p(β) and p(γ), respectively.