>sp|Q91X96|MSS4_MOUSE Guanine nucleotide exchange factor MSS4 OS=Mus musculus GN=Rabif MEPCELQNELVSAEGRNRKAVLCQRCGSRVLQPGTALFSRRQLFLPSMRKKPDLADGSNP DGDLLQEHWLVNDMFTFENVGFTKDVGNIKFLVCADCEIGPIGWHCLDDKNSFYVALERV SHE