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:  We have utilized transient transfections , mutation analysis , electromobility gel - shifts , and immunoblot analysis to test the hypothesis that expression of the CTalpha gene is controlled in part by the binding of three trans - acting nuclear factors , Sp1 , Sp2 , and Sp3 .

Output: CTalpha gene


Input: Consider Input:  The immediate 5 ' - flanking region was GC - rich with 3 SP - 1 - like and 2 AP - 2 sites identified in close proximity to the transcription start site .

Output: SP - 1


Input: Consider Input:  Lastly , several restriction length polymorphisms were identified and mapped within a 1 kb region located immediately upstream from the JH cluster .


Output: JH cluster