PROBLEM TO BE SOLVED: To provide a new technique for localizing a target protein on a cell membrane or a Golgi apparatus. SOLUTION: A compound represented by the following formula (1) [In the formula (1), Z represents a group represented by the following formula (2), and L represents -C-, -O-, -CO. Represents a divalent hydrocarbon group having 1 to 50 carbon atoms that may be interrupted by being substituted with a −, −NH− or a group represented by the following formula (3), and R1 is used as a ligand for the tag protein. Represents a group in which a photodegradable protective group is further bonded to a functioning group or a group functioning as a ligand of the tag protein, and in the following formula (2), R2 is a linear hydrocarbon saturated or unsaturated with 9 or more carbon atoms. Represents a hydrogen group. ]. [Chemical 1] [Selection diagram] None【課題】対象タンパク質を細胞膜又はゴルジ体に局在化させる新たな技術を提供する。【解決手段】下記式（１）で表される化合物［式（１）中、Ｚは下記式（２）で表される基を表し、Ｌは、－Ｃ－が、－Ｏ－、－ＣＯ－、－ＮＨ－又は下記式（３）で表される基に置換されることにより中断されていてもよい炭素数１～５０の２価の炭化水素基を表し、Ｒ１はタグタンパク質のリガンドとして機能する基又は前記タグタンパク質のリガンドとして機能する基に光分解性保護基が更に結合した基を表し、下記式（２）中、Ｒ２は炭素数９以上で飽和又は不飽和の直鎖状炭化水素基を表す。］。 ［化１］【選択図】なし
