Table 1. Affinities and Dynamic Range of LUMABS Sensors.
target antibody | sensor name | Ab binding elementa | monovalent Kd.Abb | sensor Kd.app | sensor DR |
---|---|---|---|---|---|
trastuzumab | TRAS-LUMABS-1 | QLGPYELWELSH | 0.29 ± 0.01 μM | 303 ± 15 nM | 59 ± 4% |
TRAS-LUMABS-2 | LWGPYEWWELHH | 1.6 ± 0.3 μM | 0.6 ± 0.2 μM | 20 ± 1% | |
TRAS-LUMABS-3 | LWGPYEWWEFHH | 1.2 ± 0.2 μM | 0.16 ± 0.05 μM | 31 ± 2% | |
obinutuzumab | CD20-LUMABS-1 | YNCEPANPSEKNSPSTQYCYSI | 7 μMd | 0.54 ± 0.13 nM | 23 ± 1% |
CD20-LUMABS-2 | YNCAPATPSEKNSPSTQYCYSI | N.D. | 0.23 ± 0.06 nM | 26 ± 1% | |
rituximab | CD20-LUMABS-1 | YNCEPANPSEKNSPSTQYCYSI | 28 μMd | 3.9 ± 0.7 μM | 22 ± 1% |
CD20-LUMABS-2 | YNCAPATPSEKNSPSTQYCYSI | N.D. | N.B. | N.B. | |
cetuximab | CTX-LUMABS-1 | CQFDLSTRRLKC | 0.27 ± 0.01 μMc | 376 ± 18 nM | 47.3 ± 0.6% |
CTX-LUMABS-2 | CVFDLGTRRLRC | 61 ± 2 nMc | 55 ± 3 nM | 60.0 ± 0.8% | |
CTX-LUMABS-3 | AVFDLGTRRLRA | N.D. | N.B. | N.B. |
Epitope, mimotope, or meditope as described in the text. For exact sequences of the proteins used in this study, refer to the Supporting Information.
Per binding site.
See ref43
See ref (30). DR dynamic range. N.D. not determined. N.B. no binding.