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Record Information
Version1.0
Creation Date2016-09-30 22:20:27 UTC
Update Date2020-06-04 20:48:06 UTC
BMDB IDBMDB0000168
Secondary Accession Numbers
  • BMDB00168
Metabolite Identification
Common NameL-Asparagine
DescriptionL-Asparagine, also known as Asn or aspartamic acid, belongs to the class of organic compounds known as asparagine and derivatives. Asparagine and derivatives are compounds containing asparagine or a derivative thereof resulting from reaction of asparagine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom. L-Asparagine is a drug which is used for nutritional supplementation, also for treating dietary shortage or imbalance. L-Asparagine exists as a solid, possibly soluble (in water), and a very strong basic compound (based on its pKa) molecule. L-Asparagine exists in all living species, ranging from bacteria to humans. L-Asparagine is a potentially toxic compound. L-Asparagine has been found to be associated with several diseases known as pregnancy, cystic fibrosis, gout, and leukemia; also l-asparagine has been linked to the inborn metabolic disorders including celiac disease.
Structure
Thumb
Synonyms
ValueSource
(2S)-2,4-Diamino-4-oxobutanoic acidChEBI
(2S)-2-Amino-3-carbamoylpropanoic acidChEBI
(S)-2-Amino-3-carbamoylpropanoic acidChEBI
(S)-AsparagineChEBI
2-Aminosuccinamic acidChEBI
alpha-Aminosuccinamic acidChEBI
AsnChEBI
ASPARAGINEChEBI
Aspartamic acidChEBI
L-2-Aminosuccinamic acidChEBI
L-AsparaginChEBI
L-Aspartic acid beta-amideChEBI
NChEBI
(2S)-2,4-Diamino-4-oxobutanoateGenerator
(2S)-2-Amino-3-carbamoylpropanoateGenerator
(S)-2-Amino-3-carbamoylpropanoateGenerator
2-AminosuccinamateGenerator
a-AminosuccinamateGenerator
a-Aminosuccinamic acidGenerator
alpha-AminosuccinamateGenerator
Α-aminosuccinamateGenerator
Α-aminosuccinamic acidGenerator
AspartamateGenerator
L-2-AminosuccinamateGenerator
L-Aspartate b-amideGenerator
L-Aspartate beta-amideGenerator
L-Aspartate β-amideGenerator
L-Aspartic acid b-amideGenerator
L-Aspartic acid β-amideGenerator
(-)-AsparagineHMDB
(S)-2,4-Diamino-4-oxobutanoateHMDB
(S)-2,4-Diamino-4-oxobutanoic acidHMDB
AgedoiteHMDB
alpha AmminosuccinamateHMDB
alpha Amminosuccinamic acidHMDB
AltheineHMDB
Asparagine acidHMDB
AsparamideHMDB
Aspartic acid amideHMDB
Aspartic acid b-amideHMDB
Aspartic acid beta amideHMDB
b2,4-(S)-Diamino-4-oxo-utanoateHMDB
b2,4-(S)-Diamino-4-oxo-utanoic acidHMDB
Crystal VIHMDB
L-2,4-Diamino-4-oxobutanoateHMDB
L-2,4-Diamino-4-oxobutanoic acidHMDB
L-AspartamineHMDB
L-b-AsparagineHMDB
L-beta-AsparagineHMDB
Chemical FormulaC4H8N2O3
Average Molecular Weight132.1179
Monoisotopic Molecular Weight132.053492132
IUPAC Name(2S)-2-amino-3-carbamoylpropanoic acid
Traditional NameL-asparagine
CAS Registry Number70-47-3
SMILES
N[C@@H](CC(N)=O)C(O)=O
InChI Identifier
InChI=1S/C4H8N2O3/c5-2(4(8)9)1-3(6)7/h2H,1,5H2,(H2,6,7)(H,8,9)/t2-/m0/s1
InChI KeyDCXYFEDJOCDNAF-REOHCLBHSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as asparagine and derivatives. Asparagine and derivatives are compounds containing asparagine or a derivative thereof resulting from reaction of asparagine at the amino group or the carboxy group, or from the replacement of any hydrogen of glycine by a heteroatom.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentAsparagine and derivatives
Alternative Parents
Substituents
  • Asparagine or derivatives
  • Alpha-amino acid
  • L-alpha-amino acid
  • Fatty amide
  • Fatty acyl
  • Fatty acid
  • Carboxamide group
  • Amino acid
  • Primary carboxylic acid amide
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Organic nitrogen compound
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Hydrocarbon derivative
  • Primary aliphatic amine
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Carbonyl group
  • Amine
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
StatusDetected and Quantified
Origin
  • Endogenous
BiofunctionNot Available
ApplicationNot Available
Cellular locations
  • Cytoplasm
  • Mitochondria
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point234 - 235 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility29.4 mg/mLNot Available
LogP-3.82CHMELIK,J ET AL. (1991)
Predicted Properties
PropertyValueSource
logP-3.4ALOGPS
logP-4.3ChemAxon
logS0.1ALOGPS
pKa (Strongest Acidic)2ChemAxon
pKa (Strongest Basic)8.43ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count4ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area106.41 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity28.35 m³·mol⁻¹ChemAxon
Polarizability11.68 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash Key
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (3 TMS)splash10-0159-0910000000-bedf57998656ab5ebc16View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (3 TMS)splash10-0159-0910000000-4979c4d028d2dc931263View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-0159-0910000000-b7ea3fef61f3940cbddaView in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (3 TMS)splash10-00di-9710000000-6d0afcbcc003347e598eView in MoNA
GC-MSGC-MS Spectrum - GC-MS (2 TMS)splash10-0uxr-0910000000-2be567239bd3229b1ca1View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-02t9-0790000000-b8141f48cbebb90f683eView in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-02t9-1790000000-1d12ed9b4fb2799da766View in MoNA
GC-MSGC-MS Spectrum - GC-MS (4 TMS)splash10-014u-0961000000-65a5c0999f17110c9939View in MoNA
GC-MSGC-MS Spectrum - GC-MS (4 TMS)splash10-00kr-0940000000-0e0e5c7bdbac5ea0e49eView in MoNA
GC-MSGC-MS Spectrum - GC-MS (3 TMS)splash10-00lr-1920000000-7864dbb1f685e64dd1cfView in MoNA
GC-MSGC-MS Spectrum - GC-MS (4 TMS)splash10-000i-1940000000-964ea25da2789805985aView in MoNA
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-00lr-0930000000-79a089d9875e092dd7f2View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0159-0910000000-bedf57998656ab5ebc16View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0159-0910000000-4979c4d028d2dc931263View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0159-0910000000-b7ea3fef61f3940cbddaView in MoNA
GC-MSGC-MS Spectrum - GC-EI-QQ (Non-derivatized)splash10-00di-4931100000-17f149310ce3a0f748d1View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00di-9710000000-6d0afcbcc003347e598eView in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-0uxr-0910000000-2be567239bd3229b1ca1View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-02t9-0790000000-b8141f48cbebb90f683eView in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-02t9-1790000000-1d12ed9b4fb2799da766View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-014u-0961000000-65a5c0999f17110c9939View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-00kr-0940000000-0e0e5c7bdbac5ea0e49eView in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-00lr-1920000000-7864dbb1f685e64dd1cfView in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-000i-1940000000-964ea25da2789805985aView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-000f-9100000000-5881591331bd059b7e7dView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-0080-9400000000-e5c7e19f427eea6d71b0View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-00di-9000000000-afc1214100db1168b095View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-00dl-9000000000-57e977cd87e9a86d482bView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-001i-0900000000-6fb96f5aa291359dba29View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-000i-9000000000-76f11e6fe5657c35d15fView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-000i-9000000000-e944486273dbfde4cae4View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-001i-0900000000-27ad91a86be0c4d86c3cView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-001i-0900000000-b8b7a3431b66246ad613View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-000i-9000000000-03fa294ec740e189dd99View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-000i-9000000000-cee2081406fc25ab6169View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-001i-0900000000-cd79afa0c27f65e54adcView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-01q9-0943200000-5a24322ba0ce2f410155View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-03di-0900000000-fc3086cc1bb0c06a4c11View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-03di-3900000000-2d74d8232e7523f3b1c9View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-001i-0900000000-fa61c6fa9a87ce4905bbView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-01q9-0942200000-757da8b3406485c997b0View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-014i-9000000000-eac18512f2d22ab7a7efView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-03di-0900000000-8df6d5b6cf94bf081c89View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-001i-0900000000-18079004a95c252da208View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negativesplash10-001i-0900000000-e6b1f9b4982e6cdc863dView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negativesplash10-03di-5900000000-7b9c09b3b6de28972f97View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negativesplash10-00dl-9100000000-2ea95ead344d62e230a4View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negativesplash10-0006-9000000000-defacc365589bc4437d7View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negativesplash10-0006-9000000000-fd60db4d5e35794c45aeView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Positivesplash10-001i-3900000000-fd0f1034b5c1e40435c0View in MoNA
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
2D NMR[1H,1H] 2D NMR SpectrumNot AvailableView in JSpectraViewer
2D NMR[1H,13C] 2D NMR SpectrumNot AvailableView in JSpectraViewer
Biological Properties
Cellular Locations
  • Cytoplasm
  • Mitochondria
Biospecimen Locations
  • All Tissues
  • Blood
  • Colostrum
  • Liver
  • Longissimus Thoracis Muscle
  • Mammary Gland
  • Milk
  • Muscle
  • Placenta
  • Prostate Tissue
  • Ruminal Fluid
  • Semimembranosus Muscle
  • Testis
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
All TissuesExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
BloodDetected and Quantified27.4 uMNot SpecifiedNot Specified
Normal
details
BloodDetected and Quantified22-27 uMNot SpecifiedNot Specified
Normal
details
BloodDetected and Quantified25.6 uMNot SpecifiedBothNormal details
BloodDetected and Quantified20-33 uMNot SpecifiedNot Specified
Normal
details
BloodDetected and Quantified34-40 uMNot SpecifiedNot Specified
Normal
details
BloodDetected and Quantified25 +/- 4 uMNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
ColostrumDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
LiverDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
LiverDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
LiverDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
LiverDetected and Quantified169 +/- 37 nmol/g of tissueNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
Longissimus Thoracis MuscleDetected and Quantified40 +/- 12 nmol/g of tissueNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
Mammary GlandDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
Mammary GlandDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified6.6 +/- 0.3 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified6 +/- 1 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified6.5 +/- 0.2 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified7 +/- 1 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified6.5 +/- 0.3 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified8 +/- 1 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified5.3 +/- 0.2 uMNot SpecifiedNot Specified
Normal
details
MilkDetected and Quantified6 +/- 2 uMNot SpecifiedNot Specified
Normal
details
MilkDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
MuscleDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
MuscleDetected and Quantified106-225 nmol/g of tissueNot SpecifiedNot Specified
Normal
details
PlacentaExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
Prostate TissueExpected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal
  • Not Applicable
details
Ruminal FluidDetected and Quantified1 +/- 1 uMNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
Semimembranosus MuscleDetected and Quantified46 +/- 17 nmol/g of tissueNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
TestisDetected and Quantified48 +/- 11 nmol/g of tissueNot SpecifiedNot Specified
Normal
    • Aidin Foroutan, C...
details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
All Mycobacterium avium subsp. paratuberculosis-infected
details
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
High dose Mycobacterium avium subsp. paratuberculosis-infected
details
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Low dose Mycobacterium avium subsp. paratuberculosis-infected
details
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Mycobacterium avium subsp. paratuberculosis infection
details
BloodDetected and Quantified23.6 uMNot SpecifiedNot Specified
Bovine spongiform encephalopathy positive
details
BloodDetected and Quantified24 uMNot SpecifiedNot Specified
Bovine spongiform encephalopathy negative
details
ColostrumDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Commercial Product/bacterial growth on ground beef
details
MuscleDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Commercial Product/bacterial growth on ground beef
details
HMDB IDHMDB0000168
DrugBank IDDB00174
Phenol Explorer Compound IDNot Available
FooDB IDFDB000787
KNApSAcK IDC00001341
Chemspider ID6031
KEGG Compound IDC00152
BioCyc IDASN
BiGG ID34055
Wikipedia LinkAsparagine
METLIN ID14
PubChem Compound6267
PDB IDNot Available
ChEBI ID17196
References
Synthesis ReferenceWang, Fangda. Preparation of L-b-asparagine. Faming Zhuanli Shenqing Gongkai Shuomingshu (2005), 8 pp.
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Melzer N, Wittenburg D, Hartwig S, Jakubowski S, Kesting U, Willmitzer L, Lisec J, Reinsch N, Repsilber D: Investigating associations between milk metabolite profiles and milk traits of Holstein cows. J Dairy Sci. 2013 Mar;96(3):1521-34. doi: 10.3168/jds.2012-5743. [PubMed:23438684 ]
  2. A. Foroutan et al. (2019). A. Foroutan et al. The Chemical Composition of Commercial Cow's Milk (in preparation). Journal of Agricultural and Food Chemistry.

Enzymes

General function:
Amino acid transport and metabolism
Specific function:
Not Available
Gene Name:
ASNS
Uniprot ID:
Q1LZA3
Molecular weight:
64220.0
Reactions
Adenosine triphosphate + L-Aspartic acid + L-Glutamine + Water → Adenosine monophosphate + Pyrophosphate + L-Asparagine + L-Glutamic aciddetails
General function:
Amino acid transport and metabolism
Specific function:
Has both L-asparaginase and beta-aspartyl peptidase activity. May be involved in the production of L-aspartate, which can act as an excitatory neurotransmitter in some brain regions. Is highly active with L-Asp beta-methyl ester. Besides, has catalytic activity toward beta-aspartyl dipeptides and their methyl esters, including beta-L-Asp-L-Phe, beta-L-Asp-L-Phe methyl ester (aspartame), beta-L-Asp-L-Ala, beta-L-Asp-L-Leu and beta-L-Asp-L-Lys. Does not have aspartylglucosaminidase activity and is inactive toward GlcNAc-L-Asn. Likewise, has no activity toward glutamine.
Gene Name:
ASRGL1
Uniprot ID:
Q32LE5
Molecular weight:
32050.0
Reactions
L-Asparagine + Water → L-Aspartic acid + Ammoniadetails
General function:
Translation, ribosomal structure and biogenesis
Specific function:
Not Available
Gene Name:
NARS
Uniprot ID:
Q2KJG3
Molecular weight:
64399.0
Reactions
Adenosine triphosphate + L-Asparagine + tRNA(Asn) → Adenosine monophosphate + Pyrophosphate + L-Asparaginyl-tRNA(Asn)details
General function:
Involved in dolichyl-diphosphooligosaccharide-protein g
Specific function:
Subunit of the oligosaccharyl transferase (OST) complex that catalyzes the initial transfer of a defined glycan (Glc(3)Man(9)GlcNAc(2) in eukaryotes) from the lipid carrier dolichol-pyrophosphate to an asparagine residue within an Asn-X-Ser/Thr consensus motif in nascent polypeptide chains, the first step in protein N-glycosylation. N-glycosylation occurs cotranslationally and the complex associates with the Sec61 complex at the channel-forming translocon complex that mediates protein translocation across the endoplasmic reticulum (ER). All subunits are required for a maximal enzyme activity.
Gene Name:
DAD1
Uniprot ID:
Q5E9C2
Molecular weight:
12495.0
General function:
Involved in dolichyl-diphosphooligosaccharide-protein g
Specific function:
Subunit of the oligosaccharyl transferase (OST) complex that catalyzes the initial transfer of a defined glycan (Glc(3)Man(9)GlcNAc(2) in eukaryotes) from the lipid carrier dolichol-pyrophosphate to an asparagine residue within an Asn-X-Ser/Thr consensus motif in nascent polypeptide chains, the first step in protein N-glycosylation. N-glycosylation occurs cotranslationally and the complex associates with the Sec61 complex at the channel-forming translocon complex that mediates protein translocation across the endoplasmic reticulum (ER). All subunits are required for a maximal enzyme activity (By similarity). Required for the assembly of both SST3A- and SS3B-containing OST complexes (By similarity).
Gene Name:
DDOST
Uniprot ID:
A6QPY0
Molecular weight:
48791.0
General function:
Involved in dolichyl-diphosphooligosaccharide-protein g
Specific function:
Subunit of the oligosaccharyl transferase (OST) complex that catalyzes the initial transfer of a defined glycan (Glc(3)Man(9)GlcNAc(2) in eukaryotes) from the lipid carrier dolichol-pyrophosphate to an asparagine residue within an Asn-X-Ser/Thr consensus motif in nascent polypeptide chains, the first step in protein N-glycosylation. N-glycosylation occurs cotranslationally and the complex associates with the Sec61 complex at the channel-forming translocon complex that mediates protein translocation across the endoplasmic reticulum (ER). All subunits are required for a maximal enzyme activity.
Gene Name:
RPN2
Uniprot ID:
Q3SZI6
Molecular weight:
69214.0
General function:
Involved in dolichyl-diphosphooligosaccharide-protein g
Specific function:
Catalytic subunit of the oligosaccharyl transferase (OST) complex that catalyzes the initial transfer of a defined glycan (Glc(3)Man(9)GlcNAc(2) in eukaryotes) from the lipid carrier dolichol-pyrophosphate to an asparagine residue within an Asn-X-Ser/Thr consensus motif in nascent polypeptide chains, the first step in protein N-glycosylation. N-glycosylation occurs cotranslationally and the complex associates with the Sec61 complex at the channel-forming translocon complex that mediates protein translocation across the endoplasmic reticulum (ER). All subunits are required for a maximal enzyme activity. This subunit contains the active site and the acceptor peptide and donor lipid-linked oligosaccharide (LLO) binding pockets (By similarity). STT3A is present in the majority of OST complexes and mediates cotranslational N-glycosylation of most sites on target proteins, while STT3B-containing complexes are required for efficient post-translational glycosylation and mediate glycosylation of sites that have been skipped by STT3A (By similarity).
Gene Name:
STT3A
Uniprot ID:
Q2KJI2
Molecular weight:
80656.0
General function:
Amino acid transport and metabolism
Specific function:
Functions as a sodium-dependent amino acid transporter which countertransport protons. Mediates the saturable, pH-sensitive, and electrogenic cotransport of several neutral amino acids including glycine, asparagine, alanine, serine, glutamine and histidine with sodium (By similarity).
Gene Name:
SLC38A5
Uniprot ID:
Q5E9S9
Molecular weight:
51958.0