L-type amino acid transporter-1 (LAT1) is a member of the sodium-independent amino acid transport system L and transports large branched-chain and aromatic neutral amino acids.

哺乳动物氨基酸的跨膜运输由多种氨基酸转运载体蛋白介导，其中L型氨基酸转运载体1（LAT1）属于L系统，主要转运大分子支链氨基酸和芳香族中性氨基酸。

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L-Alanine is a neutral, genetically coded amino acid. It is a crystalline amino acid, that is a constituent of many proteins.

丙氨酸是一种晶体状的中性氨基酸，是许多蛋白质的组成成份。

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The basic gear order must be Park, Reverse, Neutral, Drive, and a low gear, usually designated with an L. The movement to Drive from Neutral must be a clockwise motion on a column mounted shifter.

WSJ: Changing Gears: Auto Makers Ditch Familiar Shift Levers