RPL37 | Ribosomal protein L37 (cytoplasmic)

Inhibition of autophagic flux by concanamycin A (ConcA) prevents the degradation of ribosomal proteins under nitrogen starvation or phosphate limitation. (A) Chlamydomonas cells growing exponentially in Tris-acetate phosphate medium (TAP) were washed twice with nitrogen-free medium (TAP-N) and grown under these conditions for 4, 8, and 24 h. Control cells were washed in TAP medium and grown in the presence of nitrogen. (B) Chlamydomonas cells growing in TAP medium were washed with a nitrogen-free medium and grown under these conditions for 16 h in the absence (–) or presence (+) of 0.1 µM ConcA. (C) Chlamydomonas cells growing exponentially in TAP medium were washed with a phosphate-free medium (TA) and grown under these conditions during 8, 24, and 48 h. Control cells were washed and resuspended in TAP medium. (D) Chlamydomonas cells growing in TAP medium were washed with a phosphate-free (TA) medium and grown under these conditions for 48 h. Before collecting samples, cells were treated for 24 h with 0.1 µM ConcA. For (A–D), 20 µg of total extracts were resolved by 12% (RPS6) or 15% (RPL37, ATG8, and FKBP12) SDS–PAGE followed by western blotting with anti-OLLAS, anti-RPL37, anti-ATG8, and anti-FKBP12 antibodies. Molecular mass markers (kDa) are indicated on the left.