Interestingly, the protein described in the article is made out of glycine, the only amino acid that doesn't have handedness (i.e. it is achiral). So you can't

Interestingly, the protein described in the article is made out of glycine, the only amino acid that doesn't have handedness (i.e. it is achiral). So you can't tell if this protein is terrestrial or not based on its handedness.