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Flashcards

20 Amino Acids

Roshana Basto Biology English 20 cards

Alanine Ala A

Cards in this deck (20)

  1. 1Alanine Ala A- non polar
    - contains one methyl group    Alanine Ala A
  2. 2Glycine Gly G- nonpolarGlycine Gly G
  3. 3Proline Pro P- hydrocarbon chain wraps back around and forms a covalent bond w/ the amine, thus causes restriction
    - non polar    Proline Pro P
  4. 4Valine Val V- has a beta carbon
    - has branched property (confers unique structural properties)
    - non polar    Valine Val V
  5. 5Leucine Leu L- non polar
    - more hydrophobic surface area
    - bulkier    Leucine Leu L
  6. 6Isoleucine Ile I- branched Beta carbon
    - similar to Val
    - nonpolar    Isoleucine Ile I
  7. 7Methionine Met M- branched Beta-carbon
    - similar to Val
    - nonpolar    Methionine Met M
  8. 8Phenylalanine Phe F- aromatic
    - nonpolar    Phenylalanine Phe F
  9. 9Tyrosine Tyr Y- polar (-OH); participates in polar interactions and (-H) bonding
    - mostly hydrophobic
    - has amphipathic characteristics
    - aromatic    Tyrosine Tyr Y
  10. 10Tryptophan Trp W- absorbs light
    - used for measuring protein concentration at 280 nm
    - nonpolar aromatic    Tryptophan Trp W
  11. 11Serine Ser S- polar, uncharged
    R groups    Serine Ser S
  12. 12Threonine Thr T- polar, uncharged R groupsThreonine Thr T
  13. 13Cysteine Cys C- has a thiol
    - thiol readily dissociates; very reactive and bonds with other cysteines to form a disulfide bridge (covalent bond)
    - polar, uncharged    Cysteine Cys C
  14. 14Asparagine Asn N- Polar, unchargedAsparagine Asn N
  15. 15Glutamine Gln Q- Polar, unchargedGlutamine Gln Q
  16. 16Lysine Lys K- positively charged R groupLysine Lys K
  17. 17Arginine Arg R- Positively charged R group
    - contains a guanidinium    Arginine Arg R
  18. 18Histidine His H- serves as a proton donor and acceptor on an enzyme active site (often found on enzyme reactive sites)
    - contains imidazole ring (near neutrality)    Histidine His H
  19. 19Aspartate Asp D- polar, negatively charged R groupAspartate Asp D
  20. 20Glutamate Glu E- polar, negatively chargedGlutamate Glu E

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Biology Flashcards on 20 Amino Acids , created by Roshana Basto on 15/10/2018.
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Roshana Basto
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