Echis ocellatus disintegrins

Echis ocellatus disintegrins are a family of small, cysteine-rich, non-enzymatic proteins found in the venom of the West African carpet viper, Echis ocellatus [1, 2]. These molecules are primarily known for their potent ability to inhibit platelet aggregation and cell-matrix interactions by binding to integrin receptors, such as the fibrinogen receptor (alpha-IIb-beta-3) and the vitronectin receptor (alpha-v-beta-3) [3, 4]. Most members of this family contain a conserved Arg-Gly-Asp (RGD) motif that mimics the binding sites of natural extracellular matrix ligands, allowing them to act as competitive antagonists [1, 5]. In the context of snakebite pathology, these disintegrins contribute significantly to the venom-induced consumption coagulopathy and systemic hemorrhage by preventing the formation of stable platelet plugs [2, 6]. Beyond their role as toxins, they have been extensively studied as pharmacological tools and lead compounds for developing anti-thrombotic and anti-angiogenic therapies [4, 7]. Their high affinity and specificity for integrins make them valuable for investigating cell signaling and potential treatments for cancer metastasis [3, 8].

Other names

OcellatusinCarpet viper disintegrinsRGD-containing venom proteinsEchis ocellatus venom disintegrins

Antivenom antibodies bind to the disintegrin molecules, sterically hindering their ability to interact with cellular integrins and facilitating their clearance from circulation [2, 6, 8].