Question: Simple pentapeptides called enkephalins are abundant in certain nerve terminals. They have opiate-like activity and are probably involved in organizing sensory information pertaining to pain.

Simple pentapeptides called enkephalins are abundant in certain nerve terminals. They have opiate-like activity and are probably involved in organizing sensory information pertaining to pain. An example is methionine enkephalin, Tyr-Gly-Gly-Phe-Met. Write out its complete structure, including all of the side chains.

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