Table 1.

Theoretical and measured values of the proteins’ molecular weights.

Affibody Carrier	Theoretical Mw (Da)	Measured Mw (Da) a	Difference (Da)
Z	7642.6	7641.8	−0.8
Z-ABD	13,049.9	13,048.9	−1.0
ABD-Z	13,049.9	13,048.9	−1.0
Z-Z	14,652.4	14,651.6	−0.8
Z-ABD-Z	20,059.7	20,059.5	−0.2
ABD-Z-Z	20,059.7	20,059.5	−0.2
Z-Z-ABD	20,059.7	20,059.5	−0.2

^a Measurement by liquid chromatography mass spectrometry (LC-MS).