. 2015 Jul 21;109(2):178–181. doi: 10.1016/j.bpj.2015.06.026

Table 1.

Dimensions of E. coli cells growing at varying rates with different nucleoid complexities

τ (min)^a	μ (h⁻¹)^b	L_b (μm)^a	ΔL (μm)^a	(ΔL + L_b)/2 (μm)^a	W (μm)^a	n = C/τ (C = 44)^c	NC = G/terC^d	ΔL_avg/ NC^e	W/NC^e	ΔL_avg/W^e
51.35	1.17	2.08	2.03	2.055	0.55	0.857	1.366	1.5044	0.4026	3.7364
50.85	1.18	2.27	2.13	2.200	0.56	0.865	1.370	1.6058	0.4088	3.9286
37.70	1.60	2.11	2.17	2.140	0.64	1.167	1.540	1.3896	0.4156	3.3438
30.15	2.00	2.36	2.40	2.380	0.71	1.459	1.730	1.3757	0.4108	3.3521
26.65	2.25	2.88	2.90	2.890	0.72	1.651	1.870	1.5455	0.3851	4.0139
22.50	2.67	3.34	3.27	3.305	0.85	1.956	2.124	1.5560	0.4002	3.8882
17.10	3.51	3.98	3.91	3.945	1.04	2.573	2.776	1.4211	0.4042	3.7933
Mean								1.4854	0.4039	3.7223
SD								0.090	0.0098	0.2710
CV (= SD/Mean)								0.061	0.0243	0.0728

L_b, mean cell length at birth; ΔL, mean incremental cell length from birth to division; ΔL_avg = (ΔL+L_b)/2, i.e., average, normalized cell length at birth. (Note that ΔL and L_b must be identical. They were measured separately. The small differences between the determinations were averaged/normalized.) W, Cell width (diameter).

Measured data points were taken from Taheri-Araghi et al. (24).

Mean growth rate μ (in h⁻¹) is reciprocal of doubling time τ (=60/μ; in min).

Mean number per nucleoid of replication positions (9) n (= C/τ), where C (= 44 min) is the time (1,24) to replicate the chromosome, bidirectionally from oriC to terC.

G/terC (= nucleoid complexity), the amount of DNA in genome equivalent units (G) covalently attached to the chromosome terminus (terC), calculated from (2ⁿ–1)/(nln2), with C = 44 min in all cases.

Calculated ratios from previous columns.