Fig. 4: Identification and bioinformatic analysis of putative β-signals in chloroplast β-barrel proteins. | Communications Biology

Fig. 4: Identification and bioinformatic analysis of putative β-signals in chloroplast β-barrel proteins.

From: Biochemical characterisation supports a central role for Oep80 from Arabidopsis thaliana in chloroplastic β-barrel protein assembly

Fig. 4

a Outer envelope β-barrel proteins were assigned to four functional groups. Conservation analysis using ConSurf was performed on the predicted β-signal sequences, and a representative example is shown for each group. b AlphaFold 3 model of Oep80 interacting with the Oep21a β-1 peptide (residues 159–167). IPTM = 0.6. Conservation analysis of the β1 strand of Oep80 is also shown. Black dotted lines in the inset indicate backbone N-to-O distances of 3 Å or less, i.e., likely hydrogen bonding interactions. *Although conservation score is low for this residue, all 150 sampled orthologs have an aromatic side chain at this position (either Y or F).

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