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. 2018 Oct 10;10(1):118–133. doi: 10.1039/c8sc03530j

Table 6. Comparison of cyclisation efficiency of OxyBbal against hexapeptide 4 bound to either the standalone PCP6 domain or loaded onto Tcp12 via the PCP7 domain. Results show that the final module is much better at supporting peptide cyclisation by OxyB enzymes than PCP6 alone.

Substrate Yield [%]
PCP-bound Mono-4 a PCP-bound 4 b
Tcp12 (4) 60 40
PCP6 (4) 33 67

aPCP-bound Mono-4 = sum of monocyclic product cleaved with methylamine from the relevant PCP-domain.

bPCP-bound 4 = sum of linear product cleaved with methylamine from the relevant PCP-domain.