Table 1

Distribution of "difficult" LUCA and ECHH proteins among functional groups of proteins


enzymes (including putative) (214)
ribosomal proteins (24)
transport proteins (14)
putative structure proteins (3)

not expressed
6
-
8
-
not purified
3
1
1
-
purified in low yields
18
8
2
1

Of 268 LUCA and ECHH proteins, 14 proteins were not expressed in small-scale. 34 proteins were expressed. 5 of those proteins could not be purified and 29 were purified in low yields. Numbers in brackets give the total number of proteins in respective functional group. Note that all 14 non-expressed proteins contain at least 2 transmembrane helices.

Ergin et al. Microbial Cell Factories 2007 6:18   doi:10.1186/1475-2859-6-18