Patent ID: 8735622

Claim:
A compound of the formula: M-L-K, wherein M is a methyllysine mimic, L is a linker, and K is an α-ketoglutarate mimic, wherein the methyllysine mimic is of the formula: wherein each of l, m and n is independently 0 or 1; each of X and Z is independently O, S, or NR 5 ; Y is O, S or NR 5 ; R 1 is aryl, aralkyl, heteroaryl or fluorescein; R 2 is alkylene or a moiety of the formula —R 6 —Ar 1 —R 7 —, wherein each of R 6 and R 7 is independently alkylene, and Ar 1 is arylene; R 3 is hydrogen, alkyl, aralkyl, heteroalkyl or heteroaralkyl; R 4 is hydrogen, alkyl, or absent; and each of R 5 is independently hydrogen or alkyl.