Protein or the physical region of the protein that participates in chemical catalysis. In solution proteins also undergo variation in structure through thermal vibration and the collision with other molecules. Proteins can be informally divided into three main classes, which correlate with typical tertiary structures: globular proteins, fibrous proteins, and membrane proteins. Almost all globular proteins are soluble and many are enzymes. Fibrous proteins are often structural, such as collagen, the major component of connective tissue, or keratin, the protein component of hair and nails. Membrane proteins often serve as receptors or provide channels for polar or charged molecules to pass
Bone morphogenetic protein 4 hair is through restricting growth factor expression in the hair matrix and antagonism between growth and differentiation signaling. Pathways that regulate hair follicle formation and hair growth are key in developing therapeutic methods for hair loss conditions. Such conditions include the development of new follicles, changing the shape of characteristics of existing follicles, and the altering of hair growth in existing hair follicles. Furthermore, BMP4 and the pathway through which it works may provide therapeutic targets for the prevention of hair loss. Bone morphogenetic protein 4 Bone morphogenetic protein 4 is a protein that in humans is encoded by "BMP4"