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.

Q:  Human and murine cytotoxic T lymphocyte serine proteases : subsite mapping with peptide thioester substrates and inhibition of enzyme activity and cytolysis by isocoumarins .

A: serine proteases
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Q:  These results induce that the putative TATA box and initiator are not involved in the promoter activity , and that the vitronectin promoter lacks the TATA box , initiator and GC box .

A: vitronectin promoter
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Q:  A 360 - bp DNA fragment located over 500 bp upstream from the cfl transcriptional start site was used in DNase I protection assays to define the specific bases bound by CorR .

A:
DNase I
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