... major proteins (Fig. 1A, asterisks),with the three most abundant of these the 45 kDa pro-tein Om45 [18 ], the 29 kDa protein Por1 [19 ] and the 14 kDa outer membrane protein we call Om14. At least ... lipid-modified proteins [27–29], Por1, Tom40, and nineother proteins (of relative molecular masses 27, 34, 35,50, 55, 65, 70, 85 and 10 5 kDa) precipitate out of the Triton X -11 4 detergent phase (Fig. 1B, ... N-terminalstretch of Om14, the three transmembrane segmentmodel of Om14 is the only one consistent with our data.Om14 is not a subunit of the TOM, SAM or morphology-related complexes Proteins closely related...