About the Authors

Takuya Shuo

Affiliation Division of Cancer Cell Research, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan

Naohiko Koshikawa

Affiliation Division of Cancer Cell Research, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan

Daisuke Hoshino

Affiliation Division of Cancer Cell Research, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan

Tomoko Minegishi

Affiliation Division of Cancer Cell Research, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan

Hiroko Ao-Kondo

Affiliation Medical Proteomics Laboratory, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan

Masaaki Oyama

Affiliation Medical Proteomics Laboratory, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan

Sadanori Sekiya

Affiliation Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, Nakagyo-ku, Kyoto, Japan

Shinichi Iwamoto

Affiliation Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, Nakagyo-ku, Kyoto, Japan

Koichi Tanaka

Affiliation Koichi Tanaka Mass Spectrometry Research Laboratory, Shimadzu Corporation, Nakagyo-ku, Kyoto, Japan

Motoharu Seiki

mseiki@ims.u-tokyo.ac.jp

Affiliation Division of Cancer Cell Research, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan

Competing Interests

SS, SI, and KT are employees of Shimadzu Corporation. This does not alter the authors’ adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: KT MS. Performed the experiments: TS NK DH TM HAK. Analyzed the data: TS MO KT. Contributed reagents/materials/analysis tools: SS SI. Wrote the paper: TS MS.