Molecular approximation between residue 10 of secretin and its receptor demonstrated by photoaffinity labeling.

Abstract excerpt

Using photoaffinity labeling, we have previously explored the molecular approximations between multiple positions of secretin and its receptor. Interestingly, the amino-terminal secretin probe incorporating a photolabile residue in position 1 labels the top of the sixth transmembrane domain of the receptor, whereas other probes with photolabile residue in positions 6, 12, 13, 14, 18, 22, and 26 all label the long...

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