Fig. 2: Structure of IsiA2-1. | Nature Communications

Fig. 2: Structure of IsiA2-1.

From: Structure of a monomeric photosystem I core associated with iron-stress-induced-A proteins from Anabaena sp. PCC 7120

Fig. 2

a Superposition of the PSI-IsiA structure with the PSI-monomer structure prepared from the Anabaena PSI tetramer (PDB: 6JEO). The structures are viewed from the cytosolic side. IsiA2-1 and PsaL are colored cyan and purple, respectively, whereas the other subunits are colored gray. b Side view of the superposition of structures between IsiA2-1 and PsaL. c, d Characteristic maps and residues of the C-terminal PsaL-like domain of IsiA2-1. Residues characteristic of the C-terminal domain of IsiA2-1 are depicted in sticks and labeled. e Loop structure of L325–T343 in IsiA2-1. The maps are shown as meshes at 1.5 σ contour level, and the corresponding models are depicted in sticks and ribbons (c–e). f Structure of IsiA2-1 depicted in ribbons and arrangements of Chl and β-carotene (BCR). Chls and β-carotenes are colored green and orange, respectively. Only rings of the Chl molecules are depicted.

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