Barbie been sold with a wide range of titles including "Miss Astronaut Barbie" (1965), "Doctor Barbie" (1988), and "Nascar Barbie" (1998). Mattel has created a range of companions for Barbie, including Hispanic Teresa, Midge, African American Christie, and Steven (Christie's boyfriend). Barbie's siblings and cousins were also created including Skipper, Todd and Stacie (twin brother and sister), Kelly, Krissy, and Francie. Barbie was friendly with Blaine, an Australian surfer, during her split with Ken in 2004. Body Image From the start, some have complained that "the blonde, plastic doll conveyed an unrealistic body image to girls." Criticisms of Barbie are often
L-methionine (S)-S-oxide reductase 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 (S)-S-oxide reductase. This enzyme