Binds to the signal sequence of presecretory protein when they emerge from the ribosomes and transfers them to TRAM (translocating chain-associating membrane protein). Fungal signal recognition particle consists of a 7S RNA molecule (scR1) and at least six protein subunits: srp72, srp68, srp54, sec65, srp21 and srp14. Has a two domain structure: the G-domain binds GTP; the M-domain binds the 7S RNA in presence of srp19 and also binds the signal sequence. Belongs to the GTP-binding SRP family. SRP54 subfamily.