SAR1A and infection: Further analysis showed that the regulators of cholesterol homeostasis, including sterol regulatory element-binding protein 2(SREBP 2), SREBP cleavage-activating protein (SCAP), membrane-bound transcription factor site 1 protease (MBTPS1), MBTPS2, Niemann–Pick intracellular cholesterol transporter 2 (NPC2), and secretion associated ras-related GTPase 1A (SAR1A), play key roles in coronaviruses’ infection [56,74].