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Process of Science: How did scientists determine the location of the center of the Milky Way,and why had they been wrong in their previous estimate (where they placed the Sun near the center)?
2,4-dinitrofluorobenzene
A chemical compound featuring a benzene ring substituted with two nitro groups (NO2) at the 2 and 4 positions and a fluorine atom at the 1 position.
N-terminal
Refers to the start of a protein or polypeptide terminated by an amino acid with a free amine group.
Amino Acid
A building block of proteins, characterized by an amino group (-NH2), a carboxyl group (-COOH), and a specific side chain.
Tripeptide
A molecule composed of three amino acids linked by peptide bonds.
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