Role of the A domain of Aap in adhesion to corneocytes. (a) Western blot of cell wall proteins from MG1363 containing pUB1000, pUB1000aap6high, and pUB1000aap6highT and probed with anti-Aap B-repeat antiserum. (b) Mean numbers of L. lactis MG1363 pUB1000aap6high, pUB1000aap6highT, and pUB1000 control cells that adhered to corneocytes. (c) Corneocytes were preincubated with increasing concentrations of rAapA-Dom (circles), 1 μM rAapA-reps (triangles), or 1 μM rAapB-rep (squares), and the mean numbers of MG1363 pUB1000aap6high cells that adhered to corneocytes are shown. The results represent the means and standard errors for three experiments.