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. Author manuscript; available in PMC: 2022 Feb 19.
Published in final edited form as: ACS Chem Biol. 2021 Feb 1;16(2):389–396. doi: 10.1021/acschembio.0c00937

Table 1.

Kinetic parameters of NAD+ and its analogues with human PARP1.

Substrate kcat (min−1) Km (μM) kcat/Km (min−1 M−1)
PARP activity NAD+ 15.4 ± 1.2 162.1 ± 33.9 9.5 × 104
3′-N3-NAD+ 17.7 ± 3.6 557.7 ± 193.7 3.2 × 104
3 25.8 ± 2.7 407.7 ± 83.2 6.3 × 104
NADase activity NAD+ 3.4 ± 1.1 346.1 ± 223.9 9.8 × 103
3′-N3-NAD+ < 0.2 N/A N/A
3 < 0.017 N/A N/A