20 Amino Acids

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Author:
sarahmariko
ID:
271023
Filename:
20 Amino Acids
Updated:
2014-04-18 19:53:23
Tags:
amino acid biochemistry
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Description:
Bis 102 Sp 2014
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  1. Alanine
    • Ala
    • A
    • hydrophobic, nonpolar, no acid/ base or H bond
  2. Arginine
    • Arg
    • R
    • Most basic aa, does H bonds, poor nuc, pka 12.5
  3. Asparagine
    • Asn
    • N
    • Polar, H bonds, not nuc, no acid/base prop
  4. Glycine
    • Gly
    • G
    • smallest aa, nonpolar, no acid/base or H bond
  5. Valine
    • Val
    • V
    • Hydrophobic
  6. Leucine
    • Leu
    • L
    • "like valine only Larger"
  7. Isoleucine
    • Ile
    • I
    • "like Leucine"
  8. Proline
    • Pro
    • P
    • Not hydrophobic, constrained in rotation
    • "PRO LINE- huddled around ball"
  9. Serine
    • Ser
    • S
    • Not acid/base, hydrophilic, polar, H bonds
  10. Threonine
    • Thr
    • T
    • no acid/base, hydrophilic, polar, h bonds
  11. Cysteine
    • Cys
    • C
    • 2 cys can bind to each other (stabilize protein structure), poor H bond, acid/base (can dissociate)
  12. Methionine
    • Met
    • M
    • Thioether, hydrophobic, initiator aa in proteins
  13. Phenylalanine
    • Phe
    • F
    • very hyrdophobic, large (affects protein structure)
    • Aromatic!
  14. Tyrosine
    • Tyr
    • Y
    • reactive side chain, h bonds, hydrophobic, acid/base, "tire-o-sine"
    • Aromatic!
  15. Tryptophan
    • Trp
    • W
    • Largest aa, least common, h bond, no acid/base
    • Aromatic!
  16. Histidine
    • His
    • H
    • base, + charge at neutral pH, salt bridges/h bonds, hydrophilic, rare, at active sites. pka=6
  17. Lycine
    • Lys
    • K
    • salt bridge, h bond, hydrophilic, nucleophile, pka=10.5 (pH=7)
  18. Glutamate
    • Glu
    • E
    • hydrophilic, h bonds and salt bridges, often at active sites
    • pka=4.2
  19. Gluamine
    • Gln
    • Q
    • polar, h bonds, no acid/base, not nucleophile
  20. Aspartate
    • Asp
    • D
    • hydrophilic, h bonds and salt bridges, often at active sites

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