Table 1.
τ (min)a | μ (h−1)b | Lb (μm)a | ΔL (μm)a | (ΔL + Lb)/2 (μm)a | W (μm)a | n = C/τ (C = 44)c | NC = G/terCd | ΔLavg/ NCe | W/NCe | ΔLavg/We |
---|---|---|---|---|---|---|---|---|---|---|
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 |
Lb, mean cell length at birth; ΔL, mean incremental cell length from birth to division; ΔLavg = (ΔL+Lb)/2, i.e., average, normalized cell length at birth. (Note that ΔL and Lb 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.