TABLE 3.
Comparison of venom toxin families of Naja samarensis and Naja philippinensis.
| Toxin families | Naja samarensis | Naja philippinensis a |
| Localities | Southern Philippines | Northern Philippines |
| Venom source | Pooled sample (5 adults) b | Pooled sample (6 adults) c |
| Fractionation method | Reverse-phase HPLC | Reverse-phase HPLC |
| Toxin identification method | Nano-ESI-LCMS/MS | Nano-ESI-LCMS/MS |
| Toxin family abundance (%) | ||
| 3FTx | 90.48 | 66.64 |
| SαNTX | 65.87 | 44.55 |
| LαNTX | ND | ND |
| CTX | 16.29 | 21.31 |
| MTLP | 3.86 | 0.77 |
| WTX | 4.46 | 0.01 |
| PLA2 | 3.76 | 22.88 |
| SVMP | 4.17 | 3.93 |
| CRiSP | 1.06 | 1.49 |
| LAAO | 0.26 | 0.42 |
| NGF | 0.13 | 0.06 |
| VES | 0.13 | 0.05 |
| CVF | ND | 2.38 |
| 5′NUC | ND | 0.55 |
| PDE | ND | 0.45 |
| SVSP | ND | 0.35 |
a
Referenced from Tan et al. (2019b).
b
Wild caught.
c
Supplied by Latoxan Venom Supply, Valence, France.
Abbreviations: 3FTx, Three-finger toxin; 5′NUC, 5′ nucleotidase; CRiSP, cysteine-rich secretory protein; CTX, cytotoxin; CVF, cobra venom factor; HPLC, high-performance liquid chromatography; LAAO, L-amino acid oxidase; LαNTX, long-chain alpha-neurotoxin; MTLP, muscarinic toxin-like protein; ND, not detected; NGF, nerve growth factor; PDE, phosphodiesterase; PLA2, phospholipase A2; SαNTX, short-chain alpha-neurotoxin; SVMP, snake venom metalloproteinases; SVSP, snake venom serine protease; VES, vespryn; WTX, weak toxin.