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:  Therefore , a structural interaction between PsaL and PsaI may stabilize the association of PsaL with the photosystem I core .

A: photosystem I core
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Q:  These include not only antioxidants , N - methyl - D - aspartate receptor antagonists , inhibitors of glutamate release , calcium channel blockers , polyamine antagonists , and nitric oxide synthase inhibitors , but cannabinoids , aspirin , melatonin , and vitamin B - 12 .

A: nitric oxide synthase
****
Q:  Defective concanavalin A - induced suppression in bancroftian filariasis .

A:
concanavalin A
****