DescriptionSIR2 heterodimer in complex with SIR4 SID white background.png
English: This image shows a SIR2 homodimer (green) in complex with the C-terminus of SIR4 (purple) via SIR4's SIR2-interacting domain (SID; yellow). SIR2 does not require interaction with SIR4 to fulfill its catalytic duties, but SIR2's catalytic activity is enhanced when in complex with SIR4.
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