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mCherry is a widely used red fluorescent protein in biotechnology, exhibiting several key properties and applications. mCherry originates from the coral Discosoma species and serves as a monomeric red fluorescent protein. It absorbs light in the range of 540-590 nm and emits light in the range of 550-650 nm. Unlike GFP （Green Fluorescent Protein） and its variants derived from jellyfish, mCherry possesses distinct red fluorescent properties. It is commonly used as a red fluorescent tag protein for labeling and localizing molecular components within cells.