1. Department of Applied Chemistry, Graduate
School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
2. Biometal Science Laboratory, RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
3. Institute for Protein Research, Osaka University, Suita, Osaka 565-0871, Japan
4. Graduate
School of Materials Science, Nara Institute of Science and Technology, Ikoma 630-0192, Japan
5. Department
of Chemistry, University of Texas at San Antonio, San Antonio, Texas 78249, United States