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. Author manuscript; available in PMC: 2018 Nov 1.
Published in final edited form as: Curr Protoc Protein Sci. 2017 Nov 1;90:5.27.1–5.27.20. doi: 10.1002/cpps.39

Table 2.

Amino Acid Length and Molecular Weight of Fusion Tags in pSOL vectors

Fusion Tag AA Length kDa* pI Description
6×His-AFV 113 13.5 5.0 AFV1–99 protein from Acidianus filamentous virus 1
6×His-SlyD 210 22.7 5.2 FKBP-type peptidyl-prolyl cis-trans isomerase
6×His-Tsf 297 32.2 5.7 E. coli elongation factor
6×His-SUMO 115 13.3 5.2 Small Ubiquitin-like Modifier
6×His-Bla 381 41.3 4.4 Beta-lactamase
6×His-MBP 382 42.1 5.5 Maltose-Binding Protein
6×His-GST 233 27.4 6.6 Glutathione S-transferase
6×His Control 14 1.8 7.0 Affinity tag
*

Molecular weights listed are all based on amino acid composition. Some tags (e.g. SUMO and Bla) frequently display anomalous migrations on SDS-PAGE.