Fig. 4: 3D structures and phylogenetic distribution of Ss-aS33, Ss-aS34 and Ss-eS6-domain 2. | Nature Communications

Fig. 4: 3D structures and phylogenetic distribution of Ss-aS33, Ss-aS34 and Ss-eS6-domain 2.

From: Structures of Saccharolobus solfataricus initiation complexes with leaderless mRNAs highlight archaeal features and eukaryotic proximity

Fig. 4

a 3D structures of aS33, aS34 and eS6 as observed here in S. solfataricus 30S. eS6 is composed of two domains (see also Supplementary fig. 8). The N-domain is present in all eukaryotes and archaea, while domain 2 is present only in Thermoprotei (see below). b BlastP and Hmmer searches show that of Ss-aS33, Ss-aS34, Ss-eS6-domain 2 orthologs are found only in Thermoprotei and more precisely in the Acidilobales, Desulfurococcales, Fervidicoccales and Sulfolobales orders. Ss-aS33, Ss-aS34, Ss-eS6-domain 2 are not found in Thermoproteales and Thermofilales. Note that eS6 N-domain is present in all archaea.

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