File:Molecular structures of the 21 proteinogenic amino acids.svg
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Size of this PNG preview of this SVG file: 463 × 599 pixels. Other resolutions: 185 × 240 pixels | 371 × 480 pixels | 593 × 768 pixels | 791 × 1,024 pixels | 1,582 × 2,048 pixels | 612 × 792 pixels.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 23:48, 27 October 2015 | 612 × 792 (629 KB) | commons>NefariousPhD | 3. Corrected the Histidine structure (for info on why it's considered a positive ion despite a pKa of 6, see https://answers.yahoo.com/question/index?qid=20111016211715AAtgQtL ); it's also labeled as a positively-charged side chain, so that should also... |
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