OBSOLETE. Penetrating at least one phospholipid bilayer of a membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer. When used to describe a protein, indicates that all or part of the peptide sequence is embedded in the membrane. Occurring in a host cell.
Source:
GOC:jl
Comment
This term was obsoleted because it represents protein topology, not a cellular component.