We wish to express our sincere thanks to each of them. Their contribution support substantially the publication of the Journal of Antibiotics.

ASAHI KASEI PHARMA CORPORATION	Japan	Microbial Chemistry Research Foundation	Japan
Astellas Pharma Inc.	Japan	MicroBiopharm Japan Co., Ltd.	Japan
Bristol-Myers Squibb	Japan	MSD K.K.	Japan
DAIICHI SANKYO CO., LTD.	Japan	NIPPON KAYAKU CO., LTD.	Japan
Dainippon Sumitomo Pharma Co., Ltd.	Japan	SHIONOGI & CO., LTD.	Japan
Eisai Co., Ltd.	Japan	TAISHO PHARMACEUTICAL CO., LTD.	Japan
KAKEN PHARMACEUTICAL CO., LTD.	Japan	Toyama Chemical Co., Ltd.	Japan
Kyorin Pharmaceutical Co., Ltd.	Japan	Traders Protein	U.S.A.
MEIJI SEIKA Pharma Co., Ltd.	Japan