TABLE 1.

Permeases of amino acids and ammonium in S. cerevisiae

Permease	Substrate(s)	Affinity	Reference(s)
Agp1	Asparagine, glutamine, other amino acids	Low	224
Agp3	Glutamine	High	225
Alp1	Arginine	—a	157
Bap2	Leucine	High	226
Bap3	Cysteine, leucine, isoleucine, valine	High	227
Can1	Arginine	High	228, 229
Dip5	Dicarboxylic amino acids	High	230
Gap1	l-Amino acids	High	146
Gnp1	Glutamine	High	231
Hip1	Histidine	High	232
Lyp1	Lysine	High	157, 233
Mep1	Ammonium	High	234
Mep2	Ammonium	High	234
Mep3	Ammonium	Low	234
Mmp1	S-Methylmethionine	High	235
Mup1	Methionine	High	236, 237
Mup3	Methionine	Low	238
Ort1	Ornithine	—	239
Put4	Proline	High	238
Sam3	S-Adenosylmethionine	High	235
Tat1	Valine, leucine, isoleucine, tyrosine, tryptophan, histidine	Low	240
Tat2	Tryptophan, tyrosine	High	240
Uga4	γ-Aminobutyrate	—	241
Yct1	Cysteine	High	242

^a—, not reported.