This plasmid already contains the trpl gene which provides a selection marker for a mutant strain of {TAIL ~ yeast} lacking the ability to grow in {HEAD ~ tryptophan}, for example ATCC No 44076 or PEP4 1  
This plasmid already contains the trpl gene which provides a selection marker for a mutant strain of { TAIL ~ yeast } lacking the ability to grow in { HEAD ~ tryptophan } , for example ATCC No 44076 or PEP4 1
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH