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Asam aspartat

Asam aspartat
Nama sistematik Asam 2S-2-aminobutandioat
Singkatan Asp
D
Kode genetik GAU GAC
Rumus kimia C4H7NO4
Massa molekul 133,10g mol−1
Titik lebur 270-271 °C
Massa jenis 1,23 g cm−3
Titik isoelektrik 2,77
pKa 1,95
9,66
Nomor CAS [56-84-8]
SMILES L - C([C@@H](C(=O)O)N)C(=O)O
D - C([C@H](C(=O)O)N)C(=O)O
Chemical structure of Aspartic acid Chemical structure of Asam aspartat

Asam aspartat (atau sering disebut aspartat saja, karena terionisasi di dalam sel), merupakan satu dari 20 asam amino penyusun protein. Asparagin merupakan asam amino analognya karena terbentuk melalui aminasi aspartat pada satu gugus hidroksilnya.

Asam aspartat bersifat asam, dan dapat digolongkan sebagan asam karboksilat. Bagi mamalia aspartat tidaklah esensial. Asam amino ini dapat ditemukan pada hewan dan tumbuhan, khususnya pada molase dari tebu muda dan bit gula[1]

Fungsinya diketahui sebagai pembangkit neurotransmisi di otak dan saraf otot. Diduga, aspartat berperan dalam daya tahan terhadap kepenatan. Senyawa ini juga merupakan produk dari daur urea dan terlibat dalam glukoneogenesis.

Referensi

  1. Templat:Note N IUPAC-IUBMB Joint Commission on Biochemical Nomenclature. "Nomenclature and Symbolism for Amino Acids and Peptides". Recommendations on Organic & Biochemical Nomenclature, Symbols & Terminology etc. Diakses tanggal September 28. 
  1. ^ Parker, Sybil, P (1984). McGraw-Hill Dictionary of Biology. McGraw-Hill Company. 

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