Desmosine is formed from four Lys residues

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#Section 2: General Biology

Matter is anything that takes up space and has mass.

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#Section 3: Genetics, Cellular and Molecular Biology

Signal sequences

contain one or more positively charged amino acids adjacent to a continuous stretch of 6–12 hydrophobic residues (known as the hydrophobic core)

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#Section 3: Genetics, Cellular and Molecular Biology

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#Section 2: General Biology

Lineage commitment

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#Section 3: Genetics, Cellular and Molecular Biology

Labile factors called cyclins drive the progression of cells through different stages of the cell cycle by binding to CDKs.