Protein moonlighting

（重定向自Gene sharing）

Crystallographic structure of cytochrome P450 from the bacteria S. coelicolor (rainbow colored cartoon, N-terminus = blue, C-terminus = red) complexed with heme cofactor (magenta spheres) and two molecules of its endogenous substrate epi-isozizaene as orange and cyan spheres respectively. The orange-colored substrate resides in the monooxygenase site while the cyan-colored substrate occupies the substrate entrance site. An unoccupied moonlighting terpene synthase site is designated by the orange arrow.[1]

Crystallographic structure of aconitase[12]

A crystallin from ducks that exhibits argininosuccinate lyase activity and is a key structural component in eye lenses, an example of gene sharing

Protein moonlighting (or gene sharing) is a phenomenon by which a protein can perform more than one function. Ancestral moonlighting proteins originally possessed a single function but through evolution, acquired additional functions. Many proteins that moonlight are enzymes; others are receptors, ion channels or chaperones. The most common primary function of moonlighting proteins is enzymatic catalysis, but these enzymes have acquired secondary non-enzymatic roles. Some examples of functions of moonlighting proteins secondary to catalysis include signal transduction, transcriptional regulation, apoptosis, motility, and structural.

单词	Gene sharing
释义	Gene sharing 英语百科 Protein moonlighting （重定向自Gene sharing） Protein moonlighting (or gene sharing) is a phenomenon by which a protein can perform more than one function. Ancestral moonlighting proteins originally possessed a single function but through evolution, acquired additional functions. Many proteins that moonlight are enzymes; others are receptors, ion channels or chaperones. The most common primary function of moonlighting proteins is enzymatic catalysis, but these enzymes have acquired secondary non-enzymatic roles. Some examples of functions of moonlighting proteins secondary to catalysis include signal transduction, transcriptional regulation, apoptosis, motility, and structural.
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