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. 2009 May 26;61(6):591–599. doi: 10.1002/iub.210

Table 2.

Transport function of orphan transporters of the SLC6 family

Solute carrier Name Alias Substrates (References)
SLC6A15 B0AT2 V7‐3, NTT7‐3, SBAT1 Leu, Ile, Val, Met, Pro ( 62, 63)
SLC6A16 NTT5 Unknown
SLC6A17 B0AT3 NTT4, RXT1 Ala, Pro, Gly, Leu ( 64)
Leu, Met, Pro, Cys, Ala, Gln, Ser, His, Gly ( 65)
SLC6A18 XT2, XTRP2, ROSIT Ala, Gly > other neutral AA
SLC6A19 B0AT1 Similar to XT2 All neutral ( 34, 35)
SLC6A20 IMINO SIT1, XT3 Pro, OH‐Pro ( 66, 67)