peptide sequences with a conserved lipid-modified cysteine residue at the N-terminus, which allows them to anchor onto the periplasmic leaflet of the plasma membrane or outer membrane. Further studies also showed that some lipoproteins are transported to the outer surface of the outer membrane or secreted into extracellular milieu. https://febs.onlinelibrary.wiley.com/doi/10.1111/febs.12041