Table 1. MsbA single-point mutations used for probing its catalytic centre.

Motif		Mutation
Walker A (WA)	376-GRSGSGKST-384	K382A
Q loop (Q)	422-VSQNV-426	Q424A
Signature motif (S)	481-LSGGQ-485	S482A
Walker B (WB)	501-ILILDE-506	D505A
D loop (D)	509-SALD-512	D512A

The bold entries indicate point of mutation.