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. 2003 Sep 17;100(20):11382–11387. doi: 10.1073/pnas.1932486100

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Copyright © 2003, The National Academy of Sciences

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Fig. 4. — (A) Comparison of the EPR spectra of spin-labeled BtuB mutants (≈200 μM) of V10R1 in mixed micelles of 17:1 OG:POPC (Upper) and with 400 μM E3R added (Lower). (B) T7R1/V10R1 in mixed micelles of 17:1 OG/POPC (Upper) and with 400 μM E3R added (Lower). (C) L8R1/V10P in POPC (Upper) and with 200 μM E3R added (Lower). (D) L8P/V10R1 in POPC (Upper) and with 200 μM E3R added (Lower). The incomplete closure of L8P/V10R1 in D results because E3R was not added in large molar excess.