signaling receptor binding | neuropeptide receptor binding | hypocretin receptor binding | protein binding | G-protein coupled receptor binding
response to extracellular stimulus | response to nutrient levels | cellular process | neuropeptide signaling pathway | regulation of cellular process | circadian sleep/wake cycle process | response to stimulus | response to stress | circadian rhythm | response to starvation | rhythmic process | G-protein coupled receptor signaling pathway | circadian sleep/wake cycle | rhythmic behavior | sleep | circadian sleep/wake cycle, wakefulness | cell communication | multicellular organismal response to stress | behavior | signaling | feeding behavior | circadian behavior | signal transduction | multicellular organismal process