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:
 BACKGROUND : Antigen - receptor interactions on lymphocytes result in local clustering of actin , receptors and signaling molecules into an asymmetric membrane structure termed a cap .
answer:
signaling molecules


question:
 Pax5 thus functions both as a transcriptional repressor and activator , depending on its interactions with corepressors of the Groucho protein family or with positive regulators such as the TATA - binding protein .
answer:
Groucho protein family


question:
 CONCLUSION : Arthritis induced by mBSA / IL - 1 is strain specific and dependent on CD4 + T lymphocytes and at least partially on RelB , but not on B lymphocytes or antibody .
answer:

IL - 1