To take the scalp of someone else in a dream is to steal their sense of self. Brush Holding a hair brush in a dream symbolizes your appearance and the work you carry out to achieve the image you desire. Dreaming of a paint brush generally indicates the appearance of your home and the work it takes or it'll take to achieve the image you want.
A protein that typically promotes cell division when a growth factor is present on the cell surface. Abnormal ras proteins, caused by genetic mutations, stimulate cell division and proliferation in the absence of a growth factor and facilitate the development of various cancers.
Main article: Protein primary structure. The primary structure of a protein refers to the linear sequence of amino acids in the polypeptide chain. The primary structure is held together by covalent bonds such as peptide bonds, which are made during the process of protein biosynthesis or translation. structural domain is an element of the protein's overall structure that is self-stabilizing and often folds independently of the rest of the protein chain. Many domains are not unique to the protein products of one gene or one gene family but instead appear in a variety of proteins.