Table 1.

Putative binding pockets defined as protomols on the surface of five representative structures of the N_NTD

Cluster	% of structure	No. of protomols	Presence of pocketa
			PI	PII	PIII	PIV
1	54.3	4	+	+	+	+
2	34.0	4	+	+	+	+
3	8.3	1	−	−	+	−
4	2.8	4	+	+	+	+
5	0.6	1	−	−	+	−

^a+ and − indicate whether the pocket is observed or not, respectively.