Table 2.
Peptidases identified from human glomerular endothelial cells by tandem mass spectrometry showing the number of unique peptides and the corresponding protein identification probability
| Protein and Gene Symbol | Accession No. | No. Unique Peptides | PIP, % |
|---|---|---|---|
| Cytosol aminopeptidase LAP3 | P28838 | 11 | 100 |
| Cathepsin D CTSD | P07339 | 8 | 100 |
| Cathepsin B CTSB | P07858 | 8 | 100 |
| Puromycin-sensitive aminopeptidase NPEPPS | P55786 | 9 | 100 |
| Aminopeptidase N ANPEP | P15144 | 11 | 100 |
| Methionine aminopeptidase 2 METAP2 | P50579 | 2 | 99.8 |
| Xaa-Pro aminopeptidase 1 XPNPEP1 | Q9NQW7 | 2 | 98.6 |
| Aspartyl aminopeptidase DNPEP | Q9ULA0 | 1 | 67 |
| Methionine aminopeptidase 1 METAP1 | P53582 | 1 | 67 |
| Aminopeptidase B RNPEP | Q9H4A4 | 1 | 67 |
| Platelet endothelial cell adhesion molecule (PECAM-1) | P16284 | 7 | 100 |
| von Willebrand factor (vWF) | P04275 | 8 | 100 |
Low confidence protein identifications (< 95%) were also provided if peptide confidence exceeded 50%. Endothelial cell phenotype markers are listed at the bottom (PECAM-1 and vWF). PIP, protein identification probability.