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.

[EX Q]: This activity creates a 4 - bp staggered cut with 3 ' OH overhangs within a specific sequence of the 21S rRNA gene of omega - strains .
[EX A]: 21S rRNA gene

[EX Q]: The first operon , orf1 - tolQRA , is iron regulated throughout growth , but iron - regulated expression of tolB and oprL fusions occurs only in late log phase .
[EX A]: oprL fusions

[EX Q]: Nuclear transcription assays confirmed that cys - 3 + was under sulfur - regulated transcriptional control and that cys - 3 + transcription was constitutive in sulfur controller ( scon ) - negative regulator mutants .
[EX A]:
sulfur controller