instruction:
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.
question:
 The Valpha and Vbeta domains have the canonical features of known teleost and mammalian TCR V domains , including conserved residues in the beginning of FR2 and at the end of FR3 .
answer:
Vbeta domains


question:
 Paradoxically there is a decrease in the level of soluble A beta secreted from the cells .
answer:
soluble A beta


question:
 A rabbit antiserum raised against a unique ( V3 domain ) bacterially expressed PKC theta fragment immunoprecipitated specifically an 82 - kDa protein from Jurkat cell lysates .
answer:

PKC theta fragment