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. 2022 Mar 18;3(6):648–697. doi: 10.1039/d2cb00017b

T m data of backbone-modified PNA with (β-N)-linkage100.

PNA sequencea (N–H/C–LysNH2) Modification T m DNA (°C) T m RNA (°C) T m mmRNA (°C)
CATTGTCACACT None (aegPNA) 65 66 55
CATTGtCACACT Ethano- (R = H) 50 59 45
CATTGtCACACT Am-ethano- (R = H2NCH2–) 52 60 47
CATTGtCACACT Gu-ethano (R = guanidinomethyl–) 54 63 47
a

The modification site is denoted by a small letter.