TRIC-A ), also known as Tmem38A, and sometimes NET1, is one of a number of TRIC channel subtypes that are believed to function as a Ca2+ counter-ion channel. TRIC-A is highly expressed in excitable cells and seems to work in coordination with Ca2+ release to balance transient negative potential. TRIC-A is located on the sarcoplasmic reticulum (SR) and is thought to be regulated by trans-membrane voltage. TRIC-A deficiency may lead to an abundance of Ca2+ and cause volatility in Ca2+ movement across the SR membrane.