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microcolonial black fungus Cryomyces
antarcticus is an extremophile organism growing on and in rock in the
Antarctic desert. Ecological plasticity and stress tolerance make it a perfect
model organism for astrobiology. 2D-gel electrophoresis and MALDI-TOF/TOF mass
spectrometry were performed to explore the protein repertoire, which allows the
fungus to survive in the harsh environment. Only a limited number of proteins
could be identified by using sequence homologies in public databases. Due to
the rather low identification rate by sequence homology, this study reveals
that a major part of the proteome of C.
antarcticus varies significantly from other fungal species.