It means mRNA protein. They are mainly responsible for the transport of mRNA out of the nuclear pores after transcription. EJC and TAP are some mRNPs. I hope this helps.
I have a Craftsman 15.5 HP IC, electric start, 42' mower, 6 speed transaxle lawn tractor that I am trying to price. The model #is 917.259520. How do I find the year built? If I can price mine maybe we can price yours? Have any ideas how I can find the manufacturing date? ejc omaha, ne