Table 2.

Alignment of NoLS sequences^a of identified nucleolar proteins and BICP27.

Protein	NoLS	Reference
HTLV-1 Rex	MPKTRRRPRRSQRKRPPTP	Siomi et al. (1988)
HIV-1 Tat	GRKKRRQRRRP	Siomi et al. (1990)
HIV-1 Rev	RQARRNRRRRWRERQR	Kubota et al. (1996)
MDV MEQ	RRRKRNRDAARRRRKQ	Liu et al. (1997)
PTHrPb	GKKKGKPGKRREQEKKKRRT	Henderson et al. (1995)
HSV-1 ICP27	RGGRRGRRRGRGRGG	Mears et al. (1995)
BICP27	RPRRPRRRPRRR

^aThe Arg and Lys residues are indicated by boldface type.

^bPTHrP, parathyroid hormone-related peptide.