  Understanding the role of self-propulsion on the conformational properties of
active filamentous objects has relevance in biology. In this context, we
consider a flexible bead-spring model polymer for which along with both
attractive and repulsive interactions among the non-bonded monomers, activity
for each bead works along its intrinsic direction of self-propulsion. We study
its kinetics in the overdamped limit, following a quench from good to poor
solvent condition. We observe that with low activities, though the kinetic
pathways remain similar, the scaling exponent for the relaxation time of
globule formation becomes smaller than that for the passive case.
Interestingly, for higher activities when self-propulsion dominates over
interaction energy, the polymer becomes more extended. In its steady state, the
variation of the spatial extension of the polymer, measured via its gyration
radius, shows two completely different scaling regimes: The corresponding Flory
exponent changes from $1/3$ to $3/5$ similar to a transition of the polymer
from a globular state to a self-avoiding walk. This can be explained by an
interplay among three energy scales present in the system, viz., the
"ballistic", thermal, and interaction energy.
