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. Author manuscript; available in PMC: 2011 Jun 23.
Published in final edited form as: Pharm Res. 2008 Nov 11;26(3):523–528. doi: 10.1007/s11095-008-9767-0

Table 1.

The ratio of expression of Tf-fusion proteins with or without helical linker

Linker (x) G-CSF Fusion Proteins hGH Fusion Proteins
Tf-x-G-CSF G-CSF-x-Tf Tf-x-hGH hGH-x-Tf
No Linker 1 1 1 1
H4 7.8 ND ND ND
(H4)2 11.2 1.44 2.39 1.66

x: linker inserted between Tf and hGH or G-CSF.

(H4): helical linker.

(H4)2: two copies of helical linker.

no linker: two domains were fused by LE peptide

ND: not determined.