1. State Key Laboratory of Animal Biotech Breeding and Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Biological Sciences, China Agricultural University, Beijing 100193, China
2. National Protein Science Facility, Tsinghua University, Beijing 100084, China
3. School of Life Sciences, Tiangong University, Tianjin 300387, China
4. Department of Biochemistry, University of Colorado, Boulder, CO 80303, USA
5. Department of Pharmaceutical Sciences, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA