TASK DEFINITION: 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.
PROBLEM:  To examine the biochemical mechanism of Tax1 transactivation , we have developed an in vitro transactivation assay in which wild - type Tax1 is able to specifically transactivate a polymerase II promoter through upstream Tax1 - responsive elements .

SOLUTION: polymerase II

PROBLEM:  The hyperpigmentation is linked to the presence of numerous single melanosomes and polymelanosomes in keratinocytes at all levels of the epidermis , and in dermal Factor XIIIa - positive dendrocytes .

SOLUTION: Factor XIIIa

PROBLEM:  A DNA fragment that complements the uvs - 2 mutation was subcloned by monitoring its ability to transform the uvs - 2 mutant to MMS resistance .

SOLUTION:
uvs - 2