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.

 We describe a novel and potentially important mechanism of nitric oxide signaling - through direct activation of guanine nucleotide - binding proteins ( G proteins ) .
G proteins

 However , the larger native molecular mass of NF - P1 suggests that NF - P1 contains an additional non - DNA - binding subunit ( s ) .
NF - P1

 Furthermore , hematopoiesis in mice lacking Gadd45gamma is not impaired and Gadd45gamma - deficient T lymphocytes show normal responses to IL - 2 .

IL - 2