AMPK sits upstream of multiple signal transduction pathways known to modulate the aging process. Lines represent direct signaling effects. Color of line reflects effect on target – green equals activating, red equals inhibiting. Color of modification equals effect of modification – green equals activating, red equals inhibiting. Arrow signifies adds modification, T bar signifies removes modification. Therefore, for example, removing an inhibitory modification generates a green T bar, as the effect on the target is activation. Orange factors are anti-longevity, blue are pro-longevity.