Tossup

SAR405 regulates this process by inhibiting Vps34, which activates a protein complex containing MLST8 and PRAS40. HSC70 initiates one form of this process (-5[1])by binding to proteins with a KFERQ (“K-F-E-R-Q”) motif and directing them to a LAMP2A multimeric complex. That chaperone-mediated form of this process is important for regulating cells under mechanical stress like muscle cells. By phosphorylating ULK1, mTOR (“M-tor”) downregulates this process. A study of this process earned Yoshinori (10[1])Ohsumi a Nobel Prize in 2016. In yeast, this process is regulated by ATG proteins, and may be induced via starvation. (-5[1])During this process, large vesicles bind to lysosomes, whose hydrolytic enzymes break down defective proteins and organelles. For 10 points, name this process in which a cell digests its own components. ■END■ (10[2]0[1])

ANSWER: autophagy [or autophagocytosis; reject “phagocytosis”]
<Ohio State A, Biology>
= Average correct buzz position

Back to tossups