Kim, J., Altenbach, C., Thurmond, R. L., Khorana, H. G., & Hubbell, W. L. (1997). Structure and function in rhodopsin: Rhodopsin mutants with a neutral amino acid at E134 have a partially activated conformation in the dark state. Proc Natl Acad Sci U S A.

Kim, Jong-Myoung, Christian Altenbach, Robin L. Thurmond, H. Gobind Khorana, and Wayne L. Hubbell. "Structure and Function in Rhodopsin: Rhodopsin Mutants With a Neutral Amino Acid At E134 Have a Partially Activated Conformation in the Dark state." Proc Natl Acad Sci U S A 1997.

Kim, Jong-Myoung, et al. "Structure and Function in Rhodopsin: Rhodopsin Mutants With a Neutral Amino Acid At E134 Have a Partially Activated Conformation in the Dark state." Proc Natl Acad Sci U S A 1997.