Abstract: In particular, these mutations clustered in two distinct regions: (i) a mutational hot-spot localized, as previously described, in the first residues of the N-HR domain, with position number 38 as the most heavily mutated, but including also a
G36V, a
N42D/T, a
N43D, a
L44M and a
L45M; (ii) other mutations were localized further downstream, within N-HR/C-HR junction and in the C-HR.