Given the task definition and input, reply with output. In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.

 The p12 ( I ) protein , encoded by the pX open reading frame I of the human T - lymphotropic virus type 1 ( HTLV - 1 ) , is a hydrophobic protein that localizes to the endoplasmic reticulum and the Golgi .

hydrophobic protein