The repertoire is now growing rapidly and includes 7 additional glycoproteins ( gE , gI , gH , gL , gG , gK and gM ) , a number of enzymes ( e . g . ribonucleotide reductase , DNA Polymerase , dUTPase ) , and a group of regulatory proteins ( BICPO , 4 , 22 , and 27 , alpha TIF ) . ^^^