Asam aspartat
Rumus rangka asam L-aspartat
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Wasta | |||
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Wasta IUPAC
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Wasta lian
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Pananda | |||
Modél 3D (JSmol)
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ChEBI |
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ChEMBL |
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ChemSpider | |||
DrugBank |
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ECHA InfoCard | 100.000.265 | ||
Nomer EC | 200-291-6 | ||
KEGG |
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PubChem CID
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UNII |
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CompTox Dashboard (EPA)
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Sipat | |||
C4H7NO4 | |||
Massa molar | 133103 g·mol−1 | ||
Panampilan | kristal tanwarna | ||
Dénsitas | 1.7 g/cm3 | ||
Titik lebur | 270 °C (518 °F; 543 K) | ||
Titik golak | 324 °C (615 °F; 597 K) (terurai) | ||
4.5 g/L[2] | |||
Kaasaman (pKa) |
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Basa konjugat | Aspartat | ||
-64.2·10−6 cm3/mol | |||
Baya | |||
NFPA 704 | |||
Iwal disebutkeun séjén, data nu dipidangkeun keur matéri dina kaayaan baku (dina 25 °C, 100 kPa). | |||
Rujukan kotak info | |||
Asam aspartat (lambang Asp atawa D;[4] wangun ionikna katelah aspartat), nyaéta asam α-amino anu dipaké dina biosintésis protéin.[5] Sarua jeung asam amino lianna, asam aspartat ngandung hiji gugus amino jeung hiji asam karboksilat. Gugus α-amino-na dina wangun kaprotonan –NH+3 dina kaayaan pisiologis, anapon gugus asam α-karboxilatna deprotonasi −COO−dina kaayaan pisiologis. Asam aspartat boga ranté gigir asam (CH2COOH) anu beréaksi jeung asam amino lianna, énjim, jeung protéin di jero awak.[5] Dina kaayaan pisiologis (pH 7,4) dina protéin ranté gigirna biasana aspartat dina wangun muatan négatip, −COO−.[5] Asam aspartat lain asam amino ésénsial pikeun manusa, kusabab bisa nyintésis sorangan upama butuh, anu dikode ku kodon GAU jeung GAC.
D-Aspartat minangka salasahiji asam D-amino anu kapanggih di mamalia.[3]
Dina protéin, ranté gigir aspartat osok kabeungkeut hidrogén ngabentuk péngkolan asx atawa motip asx, anu mindeng kajadian dina tungtung-N hélix alpa.
L-isomér Asp mangrupa salasahiji ti 22 asam amino protéinogenik, nyaéta bata anu ngawangun protéin. Asam aspartat, siga asam glutamat, kagolongkeun asam amino asam anu pKa-na 3,9, tapi dina péptida mah gumantung ogé kana lingkungan lokal, bisa nepi ka 14. Asp téh perpasip dina biosintésis.
Baca ogé
[édit | édit sumber]Rujukan
[édit | édit sumber]- ↑ Budavari, Susan; Co, Merck (1989). "862. Aspartic acid". The Merck Index (11th ed.). p. 132. ISBN 978-0-911910-28-5.
- ↑ "ICSC 1439 - L-ASPARTIC ACID". inchem.org.
- ↑ Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. pp. 5–89. ISBN 978-1498754286.
- ↑ "Nomenclature and Symbolism for Amino Acids and Peptides". IUPAC-IUB Joint Commission on Biochemical Nomenclature. 1983. Diarsipkan dari versi asli tanggal 9 October 2008. Diakses tanggal 5 March 2018. Archived 9 Oktober 2008 di Wayback Machine
- ↑ a b c G., Voet, Judith; W., Pratt, Charlotte (2016-02-29). Fundamentals of biochemistry : life at the molecular level. ISBN 9781118918401. OCLC 910538334.
Tutumbu kaluar
[édit | édit sumber]- GMD MS Spectrum
- American Chemical Society (21 April 2010). "Ancestral Eve' Crystal May Explain Origin of Life's Left-Handedness". ScienceDaily. Diarsipkan dari versi asli tanggal 23 April 2010. Diakses tanggal 2010-04-21.
Citakan:Modulator reséptor glutamat ionotropik Citakan:Modulator métabolisme jeung transpor glutamat
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- Asam dikarboxilat
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