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The chromophore indicates a region in the molecule where the energy difference between two separate molecular orbitals falls within the range of the visible spectrum (or in informal contexts, the spectrum under scrutiny). Visible light that hits the chromophore can thus be absorbed by exciting an electron from its ground state into an excited ...
The chromophore, with an amine functional group, is attached to the triazine, displacing one chloride: [citation needed] (NCCl) 3 + dye-NH 2 → N 3 C 3 Cl 2 (NHdye) + HCl The resulting dichlorotriazine can then be affixed to the cellulose fibre by displacement of one of the two chloride groups: [ citation needed ]
Haem, for example, is a biochrome responsible for the red appearance of blood. It is found primarily in red blood cells (erythrocytes), which are generated in bone marrow throughout the life of an organism, rather than being formed during embryological development. Therefore, erythrocytes are not classified as chromatophores.
In the case of the optical zero-phonon line, the position of the chromophore is the physical parameter that may be perturbed, whereas in the gamma transition, the momenta of the atoms may be changed. More technically, the key to the analogy is the symmetry between position and momentum in the Hamiltonian of the quantum harmonic oscillator .
The apoprotein with its chromophore is called phycocyanin, phycoerythrin, and allophycocyanin, respectively. They often occur as hexamers of α and β subunits (α 3 β 3) 2. They enhance the amount and spectral window of light absorption and fill the "green gap", which occurs in higher plants. [17]
Billionaire Elon Musk is categorized as a "special government employee" through his work with the Department of Government Efficiency, or DOGE, a cost-cutting initiative created by President Trump ...
Melanin is a chromophore that exists in the human epidermal layer of skin responsible for protection from harmful UV radiation. When melanocytes are stimulated by solar radiation, melanin is produced. [7] Melanin is one of the major absorbers of light in some biological tissue (although its contribution is smaller than other components).
Crystal structures available in the Protein Data Bank [12] contain in one (αβ) 2 or (αβγ) 2 asymmetric unit of different phycoerythrins: Phycoerythrobilin is the typical chromophore in phycoerythrin. It is similar to porphyrin of chlorophyll for example, but tetrapyrrole is linear, not closed into ring with metal ion in the middle.