Table 1.

Amino acid content of peptide conjugates

Conjugate	Peptide
PKI	CNELALKLAGLDINKT
MIX	CTKNILDGALKLALNE
REV	CLPPLERLTLD
BSA-R	CLPPLERLTL
M10	CLPPDLRLTLD

Peptides PKI, MIX, REV, and M10 were conjugated to HSA and used in injection experiments as described in the text. BSA-R refers to the Rev-NES peptide conjugate used by Fischer et al. (3). Leucine residues shown to be critical for function of the nuclear export signals (1, 2, 4) are in bold. Mix is a scrambled PKI NES.