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.

Input: Consider Input: The structures of thymidine kinase from herpes simplex virus type 1 in complex with substrates and a substrate analogue.

Output: thymidine kinase


Input: Consider Input: The persistent membrane retention of desipramine causes lasting inhibition of norepinephrine transporter function.

Output: norepinephrine transporter


Input: Consider Input: Hypermethylation of P15, P16, and E-cadherin genes in ovarian cancer.


Output: E-cadherin