There is a report of the EGFR tyrosine kinase domain being expressed in E. coli as a GST fusion (see the link). That group used BL21 codon plus RIL. They also show that elimination of a 13 a.a. segment of the protein increased its expression, so you may want to compare the sequence you are expressing to theirs.
XRP token and Ripple Payment Protocol are Different. Ripple is a global settlement network which allows banks to transfer money and settle international payments in different currencies. As more banks use Ripple protocol, it is becoming more valuable. Contrary to popular belief, XRP currency is different than the Ripple protocol. XRP is a token or a native currency that works under Ripple Transaction Protocol. XRP protects the Ripple network from DDOS attacks, and prevents spam.
Rippleâs emergence is also notable because, unlike other digital currencies on the list, it is not created by a decentralized mining process. Instead, Rippleâs currency supplyâtechnically known as XRPâwas created in one swoop, and a large portion is held by the company itself as a sort of treasury stock. As CEO Brad Garlinghouse explained to Fortune this summer, Ripple is able to use its XRP supply as a strategic asset while it builds out its business of supplying banks with a blockchain-based source of liquidity.