The amino acid (aa) sequence of rabbit opsin from rod photoreceptor ce
lls was determined by direct aa sequencing and conceptual translation
from the cDNA. The cDNA (1198 bp) containing the complete coding regio
n encodes a 348-aa opsin protein. Of the 16 rod cell opsins that are k
nown, rabbit opsin is most similar to human opsin (96.3% identity at t
he aa level).