Table 4. Proteins detected in PHA granules of P. extremaustralis by proteome analysis.
| Protein | MW (kDa) | Locus_tag | Annotated function |
| PhbX | 93.50 | PE143B_0105760 | Poly(3-hydroxyalkanoate) synthase |
| PhbC | 64.15 | PE143B_0105720 | Poly(R)-hydroxyalkanoic acid synthase |
| PhaC1 | 62.58 | PE143B_0104515 | Poly(R)-hydroxyalkanoic acid synthase |
| PhbP | 19.88 | PE143B_0105765 | Phasin |
| PhaI | 15.31 | PE143B_0104455 | Putative polyhydroxyalkanoate biosynthesis-like protein |
| Aminopeptidase | 52.42 | PE143B_0109130 | Cytosol aminopeptidase. COG0260 Leucyl aminopeptidase |
| Secretion protein | 38.36 | PE143B_0105715 | Glycoside hydrolase family 43. Multidrug resistance efflux pump. COG0845 Membrane-fusion protein |
| Heat-shock protein | 20.45 | PE143B_0103035 | Molecular chaperone Hsp20. COG0071 Molecular chaperone (small heat shock protein) |
| DNA binding protein HU | 9.80 | PE143B_0124435 | Integration host factor. COG0776 Bacterial nucleoid DNA-binding protein |
The annotated functions of the identified proteins, the locus tags of the coding genes and the calculated molecular masses (MW) are shown.