Department of Gastroenterology;
Department of Cardiology of the Second Affiliated Hospital;
School of Medicine;
Zhejiang University;
Hangzhou 310058;
China;
Life Sciences Institute;
Zhejiang University;
Hangzhou 310058;
China;
The Eighth Affiliated Hospital;
Sun Yat-sen University;
Shenzhen 518033;
China;
riboswitches; SAM; SAH; tertiary structures; sensing domain; expression platform;