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]:  Consistent with this biologic function , the Epstein - Barr virus ( EBV ) Rta protein powerfully stimulates the promoter of its own gene , Rp , in EBV - positive B cells in transient - transfection reporter - based assays .
[A]: Rta protein


[Q]:  Ikaros is a unique regulator of lymphopoiesis that associates with pericentromeric heterochromatin and has been implicated in heritable gene inactivation .
[A]: pericentromeric heterochromatin


[Q]:  Using purified proteins , we have prepared a five - protein heterocomplex assembly system consisting of two proteins essential for heterocomplex assembly - hsp90 and hsp70 - and three proteins that act as co - chaperones to enhance assembly - Hop , hsp40 , p23 [ Morishima , Y . , Kanelakis , K . C . , Silverstein , A . M . , Dittmar , K . D . , Estrada , L . , and Pratt , W . B . ( 2000 ) J . Biol . Chem . 275 , 6894 - 6900 ] .
[A]:
purified proteins