| Post Translational Import |
Co-Translational |
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| Import Into: | Mito/Chloro | Peroxisomes | Nuclei | ER** |
| Signal: | NH2 End * | COOH end | anywhere | usually--NH2 end |
| Signal removed: | Yes | No | No | usually--yes |
| Enter or Cross: | 2 membranes at contact point-->matrix | 1 membrane | pores | 1 membrane |
| Name of Signal | Transit Peptide (TP) | Peroxisomal localization Signal | Nuclear Localization Signal (NLS) | Signal Peptide (SP) |
*Needs 2nd signal to re-enter/cross inner membrane.
** May need additional signals to reach proper part of endomembrane system.