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.

 Given a rapid induction of Egr - 1 on stimulation with growth factors or injury , these findings may represent at least one of the molecular mechanisms underlying phenotypic modulation of smooth muscles after vascular injury .
Egr - 1

 In the studies described in this report , we have identified two potential Ets binding sites , EBS1 and EBS2 , which are conserved in both the human and murine interleukin - 2 enhancers .
interleukin - 2

 Heterotrimeric guanine nucleotide - binding proteins ( G - proteins ) function as signal transducers for a variety of hormone - coupled enzyme and ion transport systems in eukaryotic cells .

G - proteins

