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.
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Question: Activation of the cytotactin promoter by the homeobox - containing gene Evx - 1 .

Answer: cytotactin promoter

Question: Antisense oligonucleotides complementary to the 5 ' end of PKC - zeta mRNA sequences significantly reduced the collagen lattice - stimulated alpha2 and MMP - 1 mRNA levels .

Answer: MMP - 1

Question: The results of the transient - transfection assay showed that the Sp1 binding element located in the core region ( positions - - 64 to + 1 ) of the alpha2 - integrin promoter plays an essential role in the alpha2 - integrin promoter activity and its downregulation by Erb - B2 .

Answer:
Sp1 binding element