The venom proteome of Micrurus dumerilii from Colombia was determined.
Phospholipases A2 are the predominant proteins, among 11 families.
The venom induces a conspicuous myotoxic effect, reproduced by some PLA2s.
Two PLA2s and a three-finger toxin reproduce the lethal venom effect.
Anti-Micrurus nigrocinctus antivenom cross-neutralizes M. dumerilii venom.