Teresa (Barbie) and sidekick". In Life in the Dreamhouse Barbie states that all girls Teresa, Nikki, Summer, Midge, Raquelle & Grace are all her 'BFFs'. To counteract the criticisms that Barbie was a sex symbol, Mattel was compelled to issue companions for Barbie. Some of these are her boyfriend Ken, the African American Christie, Barbie's cousin Francie and Barbie's little sister Skipper. Midge appeared in 1963 and was marketed as Barbie's first best friend. Midge was discontinued in 1967. Over the years, Barbie's family tree expanded and soon Barbie would have many diverse and multicultural friends. Among these was Teresa, who was
L-methionine (S)-S-oxide reductase participates in methionine metabolism. L-methionine (S)-S-oxide reductase In enzymology, a L-methionine (S)-S-oxide reductase () is an enzyme that catalyzes the chemical reaction The 3 substrates of this enzyme are L-methionine, thioredoxin disulfide, and HO, whereas its two products are L-methionine (S)-S-oxide and thioredoxin. This enzyme belongs to the family of oxidoreductases, specifically those acting on a sulfur group of donors with a disulfide as acceptor. The systematic name of this enzyme class is L-methionine:thioredoxin-disulfide S-oxidoreductase. Other names in common use include fSMsr, methyl sulfoxide reductase I and II, acetylmethionine sulfoxide reductase, methionine sulfoxide reductase, L-methionine:oxidized-thioredoxin S-oxidoreductase, methionine-S-oxide reductase, and free-methionine