ATG14 and infection: When MEFs (mouse embryonic fibroblast cells) stably expressing hemagglutinin (HA)‐tagged Atg14 (MEFs/HA‐Atg14) were infected with S. pneumoniae R6 ∆cbpF/pCbpFR6‐FLAG, a CbpFR6–FLAG–HA–Atg14 interaction was clearly detected during infection (Fig 2F).