Fig. S1.

Distribution of measured ¹D_NH RDCs on the structure of EI. The backbone nitrogen atoms for which corresponding ¹D_NH RDCs have been measured are indicated by color-coded spheres: dark blue indicates EIN^α, light blue indicates EIN^α/β, and red indicates EIC. (A) Open (Left) and closed (Right) structures of EI. (B) Individual subdomains/domains with EIN^α (Left), EIN^α/β (Middle), and EIC (Right). Note the RDC for Gly143 was included in the structure calculations but omitted from the statistics reported in Tables 1 and 2 because Gly143 is in a linker region, and hence does not have a well-defined target value (SI Materials and Methods).