Polyvore's easy-to-use virtual styling tool lets you mix and match products from any online store to create fashion collections called sets. After you have created a set, you can publish and share it with your friends and the Polyvore community.
Cytosine (/ËsaÉªtÉËsiËn, -ËziËn, -ËsÉªn/;[2][3] C) is one of the four main bases found in DNA and RNA, along with adenine, guanine, and thymine (uracil in RNA). It is a pyrimidine derivative, with a heterocyclic aromatic ring and two substituents attached (an amine group at position 4 and a keto group at position 2).
Cysteine is the sole amino acid whose side chain can form covalent bonds, yielding disulfide bridges with other cysteine side chains: --CH2- S-S -CH2-- . A disulfide bridge between cys201 in the model peptide and cys136 is shown here: . III.