Table 1.

Five different variations of the W-tag, stating the number of tryptophan residues per construct, construct name, total number of aromatic amino acids (tryptophan, tyrosine and phenylalanine) as well as the size of the tag region and fusion protein in kDa

Name	Aromatic amino acids	Fusion protein in kDa	W-tag in kDa
EC	0	24.16	1.73
W1	1W 1Y 1F	25.79	3.36
W2	2W 3Y 0F	27.44	5.01
W3	3W 2Y 0F	27.46	5.03
W4	4W 1Y 0F	27.49	5.06
W5	5W 3Y 0F	28	5.57