Abstract
Two cysteine endopeptidases from latex of Araujia angustifolia (araujiain aI and araujiain aIII) were purified and characterized by means of conventional and proteomics techniques (MALDI-TOF). N-terminal sequences showed a high percentage of identity with cysteine proteinases belonging to the papain family. The peptide mass fingerprint analysis demonstrated a close homology among both proteinases.
Keywords: Plant proteinases, Asclepiadaceae, Araujia angustifolia, peptide mass fingerprint, proteomics techniques
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