Professor Li was very happy to learn that ChinaPeptides can be developed to such a large scale in just three years. He said that he want very badly to use Chinese reagent as much as possible, and recommend Chinese reagent to foreign researchers to support China's national enterprises to be bigger and stronger. Finally, Professor Li made some very valuable suggestions and comments to ChinaPeptides, and wished the development of ChinaPeptides wil be going more smoothly. Professor Li used the peptides from ChinaPeptides in this paper, assurance the quality of our products: ATRX ADD domain links an atypical histone methylation recognition mechanism to human mental-retardation syndrome Supplementary Text and Figures (14M). ATRX ADD domain links an atypical histone methylation recognition mechanism to human mental-retardation syndrome Supplementary Text and Figures (14M)