Senin, 17 Januari 2011

JENIS ASAM AMINO

JENIS ASAM AMINO

  • Alanine - The second simplest amino acid, but used the most in proteins.
  • beta-Alanine - The only naturally occurring beta amino acid.
  • Arginine - Amino acid often used at the active sites of enzymes.
  • Asparagine - Amide derivative of aspartic acid.
  • Aspartic Acid - Important intermediate in the citric acid cycle.
  • Carnitine - Unusual amino acid that carries fatty acids into mitochondria.
  • Citrulline - An amino acid that works to detoxify and eliminate unwanted ammonia.
  • Cysteine - Thiol containing amino acid involved in active sites and protein tertiary structure determination.
  • Cystine - Oxidation product of cysteine that holds proteins together.
  • gamma-Aminobutyric Acid - Decarboxylated amino acid that helps you chill out.
  • Glutamic Acid - Negatively charged amino acid found on the surface of proteins.
  • Glutamine - The only amino acid with the ability to easily cross the barrier between blood and brain tissue.
  • Glutathione - Small peptide that helps dump free radicals.
  • Glycine - Simplest amino acid that also acts as a neurotransmitter antagonist.
  • Histidine - Amino acid responsible for histamine biosynthesis.
  • Hydroxyproline - Important amino acid used in structural proteins like collagen.
  • Isoleucine - Hydrophobic amino acid used almost exclusively in protein and enzyme construction.
  • Leucine - Another hydrophobic amino acid used almost exclusively in protein and enzyme construction.
  • Lysine - An essential amino acid with a positive charge on the aliphatic side chain.
  • Methionine - An essential amino acid that helps initiate protein synthesis.
  • Ornithine - Critical member of the amino acids in the urea cycle.
  • Phenylalanine - Most common aromatic amino acid found in proteins.
  • Proline - Cyclic aliphatic amino acid used in the synthesis of collagen.
  • Serine - Amino acid alcohol found in the active site of serine proteases.
  • Taurine - Mercaptan-containing amino acid that is involved in bile acid biochemistry.
  • Threonine - Amino acid alcohol involved in porphyrin metabolism.
  • Tryptophan - Aromatic amino acid used the least frequently in proteins.
  • Tyrosine - Hydroxyphenyl amino acid that is used to build neurotransmitters and hormones.
  • Valine - Hydrophobic aliphatic amino acid used to hold proteins together.
DAFTAR KODON ASAM AMINO

STRUKTUR ASAM AMINO



KLASIFIKASI ASAM AMINO

  • Penggolongkan asam amino dengan menggunakan sifat fisik gugus rantai cabang pada pH 7, karena mendekati pH fisiologik.
  • Gugus rantai cabang asam amino hidrofobik, pada umumnya membentuk bagian dalam dari molekul protein globular apabila pelarut polar, air, dijauhkan.

Alanin

Valin

Leusin

Triptofan

Metionin

Isoleusin

Prolin (suatu asam imino)

Fenilalanin

  • Gugus rantai cabang asam amino polar yang tak bermuatan, dapat membentuk ikatan hidrogen. Rantai cabang polar, kecuali glisin, dapat juga disertakan dalam ikatan ion logam dengan melalui interaksi pasangan elektron bebas dari atom-atom O, N, atau S dari rantai cabang ion logamnya.

Serin

Glisin

Threonin

Sistein

Asparagin

Glutamin

Tirosin

  • Gugus rantai cabang asam amino yang bermuatan positif atau negatif penuh, dapat mengadakan interaksi ionik dengan gugus bermuatan berlawanan, atau dengan gugus polar.
  • Rantai cabang bermuatan negatif

    Asam aspartat

    Asam glutamat

  • Rantai cabang bermuatan positif

    Arginin

    Lisin

    Histidin (terbanyak bermuatan positif pada pH 6)
  • JENIS ASAM AMINO ESSENSIIAL YANG DISUPLAI DARI LUAR UNTUK TUBUH KITA

    1. Arginin
    2. histidin
    3. isoleusin
    4. leusin
    5. lisin
    6. metionin
    7. fenilalanin
    8. treonin
    9. triptofan
    10. valin (* hanya diperlukan oleh anak-anak yang sedang tumbuh)

1 komentar:

hilma nia mengatakan...

jenis asam amino assensial yang khusus bagi bayi adalah?