An AC-type element mediates transactivation of secondary cell wall carbohydrate-active enzymes by PttMYB021, the PopulusMYB46 orthologue

Table 1 Sequence overlap in AC motifs.

Species	Genbe	Motif name	Motif sequence	MYB protein^†	Reference
*Phaseolus*	PAL2	AC-I	CCCACC T ACC	n.d.	[9]
*Phaseolus*	PAL2	AC-II	CCACCAACCC...	n.d.	[9]
*Petroselinum*	4CL1	AC-II	CT CACCAACCC	n.d.	[10]
*Populus*	CCoAOMT	AC-II	CT CACCAACCC...	n.d.	[7]
*Eucalyptus*	EgCCR	MBSIIG	c CACC T ACC	EgMYB2 ^§	[3]
*Eucalyptus*	EgCCR	MBSIIG	c CACC T ACC	EgMYB1	[11]
*Arabidopsis*	4CL1	AC-II	t CACCAAC	MYB58/63	[6]
*Zea*	ZmCOMT	AC-II	t c ACCAAC	ZmMYB31	[12]
*Populus*	GT43A	AC-type	CCACCAAC	PttMYB021 ^§	[2]
			**

In motif sequences, lowercase indictates ases outside the defined motif, and asterisks highlight invariant bases. Similarity to the GT43A AC-type elements is underlined. ^†Indicates which MYB protein binds the motif. ^§Ortholog of MYB46.

ISSN: 1753-6561