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Table 2 Autoaggregation of P. gingivalis wild-type strain and mutants

From: Distinct roles of long/short fimbriae and gingipains in homotypic biofilm development by Porphyromonas gingivalis

Strain Autoaggregation indexa)
(-dA/min)
ATCC33277
(wild type) 		17.73 ± 1.67
KDP150
(ΔfimA) 		0.54 ± 3.94**
MPG67
(Δmfa1) 		36.12 ± 2.40**
MPG4167
(ΔfimA Δmfa1) 		33.87 ± 2.77**
KDP129
(Δkgp) 		35.62 ± 2.52**
KDP133
(ΔrgpA ΔrgpB) 		15.04 ± 2.68
KDP136
(ΔrgpA ΔrgpB Δkgp) 		0.29 ± 3.22**
  1. a) dA/min was automatically calculated by subtraction of At, the absorbance at time t min, from At+, at time (t + 1) min during incubation. The maximum value of – dA/min in a curve was used as the autoaggregation index. The data represent the mean ± SE of three separate experiments with each strain in duplicate.
  2. **p < 0.01 in comparison with the wild type using a Scheffe test.
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