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. 2011 Jun 17;6(6):e20592. doi: 10.1371/journal.pone.0020592

Figure 1. Illustration to show the 8 subcellular locations of Gram-negative bacterial proteins.

Figure 1

The 8 locations are: (1) cytoplasm, (2) extracellular, (3) fimbrium, (4) flagellum, (5) inner membrane, (6) nucleoid, (7) outer membrane, and (8) periplasm. Note that in prokaryotic life forms, the nucleoid region is the part of the cell that contains the DNA molecule; unlike the true nucleus of eukaryotes, it is not delimited by a membrane.