e/WD40 repeat

Information
has gloss	eng: The WD40 repeat (also known as the WD or beta-transducin repeat) is a short structural motif of approximately 40 amino acids , often terminating in a tryptophan-aspartic acid (W-D) dipeptide. Several of these repeats are combined to form a type of protein domain called the WD domain.
lexicalization	eng: WD40 repeat
instance of	e/Protein domain