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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Methods. 2015 Jan 14;75:133–140. doi: 10.1016/j.ymeth.2015.01.003

Table 2.

Criteria to differentiate between a CMA substrate and an e-MI substrate

Criteria CMA e-MI
Half-Life of the substrate Long Half-life Long Half-life
Substrate association with
organelle
CMA active lysosomes Late endosomes/MVB a
Interacts with hsc70 through
KFERQ-like motif
Yes Yes
Interacts with LAMP2A Yes No
Requires protein substrate
unfolding
Yes No
Lumenal delivery
  • Translocation across lysosomal membrane

  • Reduced by LAMP2A KD b

  • Internalization in small vesicles

  • Reduced by ESCRT c proteins KD

a

Multivesicular bodies;

b

knock-down,

c

endosomal sorting complexes required for transport