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]:  Quite unexpectedly , we also found that in unstimulated cells there is a constant ongoing process of degradation and replacement of complexed I kappa B alpha .
[A]: I kappa B


[Q]:  Intense interest is focused on PPAR - gamma and its ligands owing to its putative role in adipocyte differentiation .
[A]: PPAR - gamma


[Q]:  These data suggest that HLA - A2 downmodulation may require certain threshold levels of active Nef .
[A]:
HLA - A2