Table 8.
Inhibition Assay of AIP Analogsa
AgrC | Hemolysis Assay | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Sequence | I | II | III | IV | I | II | III | IV | ||
329 | AIP-I | YST(CDFIM) | ag | 8.00 | 0.522 | nd | nd | 3.34 | 6.12 | 189 |
330 | AIP-II | GVNA(CSSLF) | 1.62 | ag | 0.532 | 0.396 | 0.89 | nd | 3.59 | 1.19 |
331 | AIP-III | IN(CDFLL) | 5.05 | 5.63 | ag | 8.53 | 8.07 | 0.456 | nd | 23.8 |
332 | AIP-IV | YST(CYFIM) | ND | 0.373 | 0.46 | ag | nd | 0.0897 | 1.49 | nd |
333 | I1A | AN(CDFLL) | 17.9 | 4.26 | 194 | 7.85 | 4.61 | 1.29 | nd | 12.5 |
334 | N2A | IA(CDFLL) | 3.6 | 0.732 | nd | 3.53 | 1.02 | 0.137 | nd | 2.64 |
335 | D4A | IN(CAFLL) | 0.485 | 0.429 | 0.0506 | 0.0349 | 0.082 | 0.0596 | 0.163 | 0.106 |
336 | I1A/N2A | AA(CDFLL) | 7.4 | 4.38 | 2.6 | 5.41 | nd | nd | nd | nd |
337 | I1A/D4A | AN(CAFLL) | 0.328 | 2.35 | 0.28 | 0.101 | 0.0103 | 0.793 | 0.551 | 0.284 |
338 | N2A/D4A | IA(CAFLL) | 0.331 | 0.204 | 0.0657 | 0.0221 | 0.0362 | 0.0661 | 0.216 | 0.122 |
339 | I1A/N2A/D4A | AA(CAFLL) | 0.304 | 0.604 | 0.0734 | 0.0161 | 0.0411 | 0.0606 | 0.243 | 0.14 |
340 | tD2A | Ac(CAFLL) | 0.257 | 0.9 | 0.329 | 0.0957 | 0.332 | 0.711 | 0.197 | 0.306 |
341 | tD2A/F3Y | Ac(CAYLL) | 0.279 | 1.15 | 0.387 | 0.0306 | 0.279 | 0.204 | 0.265 | 0.134 |
IC50 in nM. Parentheses indicate the cyclic portion within the sequence. ag = agonist; nd = not determined. x-fold change measured relative to APPEL.