▁from ▁the ▁Filip ino ▁word ▁an to kin , ▁meaning ▁sleep y . ▁ ▁Sub types ▁ ▁Con ant ok in ▁are ▁in ▁general ▁named ▁after ▁the ▁specific ▁ep ith et ▁of ▁the ▁Con us ▁species ▁it ▁is ▁found ▁in , ▁using ▁single - letter ▁abbre vi ations ▁if ▁possible . ▁A ▁con ant ok in ▁from ▁Con us ▁radi atus ▁is ▁called ▁Con ant ok in - R , ▁but ▁the ▁latter - dis cover ed ▁ones ▁from ▁Con us ▁rol ani ▁are ▁called ▁Can onto kin - R l . ▁If ▁a ▁species ▁makes ▁multiple ▁con ant ok ins , ▁numbers ▁or ▁letters ▁are ▁suff ixed ▁to ▁the ▁names . ▁The ▁abbre viation ▁for ▁" Con ant ok in " ▁in ▁these ▁names ▁is ▁always ▁" Con ". ▁ ▁Con ant ok in - G ▁ ▁Also ▁known ▁as ▁the ▁“ s le eper ▁pe pt ide ” ▁or ▁CG X - 1 0 0 7 , ▁Con - G ▁() ▁is ▁a ▁small ▁pe pt ide ▁isolated ▁from ▁the ▁fish - h un ting ▁sn ail , ▁Con us ▁ge ograph us . ▁ ▁It ▁is ▁the ▁best - character ized ▁con ant ok in , ▁and ▁acts ▁as ▁a ▁functional ▁in hib itor ▁of ▁N MD AR . ▁ ▁Con - G ▁shows ▁potential ▁as ▁a ▁ne uro prote ct ive ▁agent ▁in ▁is chem ic ▁and ▁exc it ot ox ic ▁brain ▁injury , ▁neur onal ▁apo pt osis , ▁pain , ▁ep ile ps y , ▁and