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]:  At promoters that initiate with + 1 GGG , T7 RNAP synthesizes a ladder of poly ( G ) products as a result of slippage of the transcript on the three C residues in the template strand from + 1 to + 3 .
[EX A]: T7 RNAP

[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

[EX Q]:  CRKL , an SH2 - SH3 - SH3 adapter protein , is one of the major tyrosine phosphoproteins detected in primary leukemic neutrophils from patients with CML .
[EX A]:
tyrosine phosphoproteins