Fig. 5: Interactions among the IsiA subunits. | Nature Communications

Fig. 5: Interactions among the IsiA subunits.

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

Fig. 5

a Overall structure of PSI-IsiA viewed from the cytosolic side. The green squared areas are enlarged in panels b–e, whereas the black squared area does not have a characteristic interaction in the present structure. b Interactions between IsiA1-4 and IsiA1-5 (upper and lower panels). c, Interactions between IsiA-3 and IsiA1-4. d Interactions between IsiA1-5 and IsiA-6. e Interactions between IsiA2-1 and IsiA-2. Interactions are indicated by dashed lines, and the numbers are distances in Å. Amino acid residues and pigments participating in the interactions are labeled; for example, A105/4 means Ala105 in IsiA1-4; a415/5 means Chl a 415 in IsiA1-5. BCR, β-carotene.

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