1. Institute for Clean Energy & Advanced Materials, School of Materials & Energy, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China
2. State Key Laboratory of Silkworm Genome Biology, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China
3. Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, 1 Tiansheng Road, Chongqing 400715, P. R. China
4. Institute of Advanced Cross-field Science, Qingdao University, Qingdao 266071, P. R. China