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.
Specifies a locally unique identifier (LUID) identifying this instance of the token object. Specifies an LUID assigned to the session this token represents. There can be many tokens representing a single logon session. Specifies an LUID that changes each time the token is modified. An application can use this value as a test of whether a security context has changed since it was last used. Specifies a TOKEN_SOURCE structure identifying the agency that issued the token. This information is used in audit trails.