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Protein

Aspartoacylase

Gene

ASPA

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

Catalyzes the deacetylation of N-acetylaspartic acid (NAA) to produce acetate and L-aspartate. NAA occurs in high concentration in brain and its hydrolysis NAA plays a significant part in the maintenance of intact white matter. In other tissues it act as a scavenger of NAA from body fluids.

Catalytic activityi

N-acyl-L-aspartate + H2O = a carboxylate + L-aspartate.1 Publication

Cofactori

Zn2+2 PublicationsNote: Binds 1 zinc ion per subunit.2 Publications

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi21 – 211Zinc
Metal bindingi24 – 241Zinc
Binding sitei63 – 631Substrate
Metal bindingi116 – 1161Zinc
Active sitei178 – 17811 Publication
Binding sitei178 – 1781Substrate
Binding sitei288 – 2881Substrate

GO - Molecular functioni

GO - Biological processi

  • aspartate catabolic process Source: ProtInc
  • cellular amino acid biosynthetic process Source: Reactome
Complete GO annotation...

Keywords - Molecular functioni

Hydrolase

Keywords - Ligandi

Metal-binding, Zinc

Enzyme and pathway databases

BioCyciMetaCyc:HS03094-MONOMER.
BRENDAi3.5.1.15. 2681.
ReactomeiR-HSA-70614. Amino acid synthesis and interconversion (transamination).

Names & Taxonomyi

Protein namesi
Recommended name:
Aspartoacylase (EC:3.5.1.15)
Alternative name(s):
Aminoacylase-2
Short name:
ACY-2
Gene namesi
Name:ASPA
Synonyms:ACY2, ASP
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 17

Organism-specific databases

HGNCiHGNC:756. ASPA.

Subcellular locationi

GO - Cellular componenti

  • cytoplasm Source: HPA
  • cytosol Source: Reactome
  • extracellular exosome Source: UniProtKB
  • nucleus Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Nucleus

Pathology & Biotechi

Involvement in diseasei

Canavan disease (CAND)11 Publications
The disease is caused by mutations affecting the gene represented in this entry.
Disease descriptionA rare neurodegenerative condition of infancy or childhood characterized by white matter vacuolization and demyelination that gives rise to a spongy appearance. The clinical features are onset in early infancy, atonia of neck muscles, hypotonia, hyperextension of legs and flexion of arms, blindness, severe mental defect, megalocephaly, and death by 18 months on the average.
See also OMIM:271900
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Natural varianti16 – 161I → T in CAND; <0.5% residual enzyme activity. 2 Publications
Corresponds to variant rs769653717 [ dbSNP | Ensembl ].
VAR_039079
Natural varianti21 – 211H → P in CAND. 1 Publication
VAR_016778
Natural varianti24 – 241E → G in CAND. 1 Publication
Corresponds to variant rs104894551 [ dbSNP | Ensembl ].
VAR_016782
Natural varianti27 – 271G → R in CAND; 3% residual enzyme activity. 2 Publications
Corresponds to variant rs766328537 [ dbSNP | Ensembl ].
VAR_039080
Natural varianti57 – 571A → T in CAND. 1 Publication
VAR_016779
Natural varianti68 – 681D → A in CAND. 1 Publication
VAR_016783
Natural varianti114 – 1141D → E in CAND; <0.5% residual enzyme activity. 1 Publication
VAR_039081
Natural varianti114 – 1141D → Y in CAND. 1 Publication
VAR_016784
Natural varianti123 – 1231G → E in CAND; about 25% residual enzyme activity. 1 Publication
VAR_039082
Natural varianti143 – 1431I → T in CAND. 1 Publication
Corresponds to variant rs777936704 [ dbSNP | Ensembl ].
VAR_004995
Natural varianti152 – 1521C → R in CAND; loss of activity. 1 Publication
Corresponds to variant rs104894548 [ dbSNP | Ensembl ].
VAR_004996
Natural varianti152 – 1521C → W in CAND. 1 Publication
VAR_016785
Natural varianti152 – 1521C → Y in CAND; <0.5% residual enzyme activity. 1 Publication
VAR_039083
Natural varianti168 – 1681R → C in CAND; undetectable enzyme activity. 1 Publication
VAR_039084
Natural varianti168 – 1681R → H in CAND. 1 Publication
Corresponds to variant rs770706390 [ dbSNP | Ensembl ].
VAR_016780
Natural varianti176 – 1772Missing in CAND. 1 Publication
VAR_004997
Natural varianti181 – 1811P → T in CAND. 1 Publication
Corresponds to variant rs786204572 [ dbSNP | Ensembl ].
VAR_016781
Natural varianti183 – 1831P → H in CAND. 1 Publication
VAR_039085
Natural varianti186 – 1861V → F in CAND. 1 Publication
VAR_039086
Natural varianti195 – 1951M → R in CAND. 1 Publication
VAR_039087
Natural varianti231 – 2311Y → C in CAND. 1 Publication
Corresponds to variant rs104894550 [ dbSNP | Ensembl ].
VAR_016786
Natural varianti244 – 2441H → R in CAND. 1 Publication
VAR_016787
Natural varianti249 – 2491D → V in CAND. 2 Publications
Corresponds to variant rs104894552 [ dbSNP | Ensembl ].
VAR_016788
Natural varianti274 – 2741G → R in CAND. 2 Publications
Corresponds to variant rs761064915 [ dbSNP | Ensembl ].
VAR_004998
Natural varianti280 – 2801P → L in CAND. 1 Publication
VAR_039088
Natural varianti280 – 2801P → S in CAND. 1 Publication
Corresponds to variant rs750505963 [ dbSNP | Ensembl ].
VAR_039089
Natural varianti285 – 2851E → A in CAND; predominant mutation in Ashkenazi Jewish population; 99% loss of activity. 4 Publications
Corresponds to variant rs28940279 [ dbSNP | Ensembl ].
VAR_004999
Natural varianti287 – 2871A → T in CAND. 1 Publication
Corresponds to variant rs774323189 [ dbSNP | Ensembl ].
VAR_039090
Natural varianti295 – 2951F → S in CAND. 2 Publications
VAR_005000
Natural varianti305 – 3051A → E in CAND; pan-European origin; most prevalent among non-Jewish CAND patients; probably the most ancient mutation; loss of activity. 4 Publications
Corresponds to variant rs28940574 [ dbSNP | Ensembl ].
VAR_005001

Mutagenesis

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Mutagenesisi71 – 711R → K: Reduces activity by 99%. 1 Publication
Mutagenesisi164 – 1641Y → F: Reduces activity by 99%. 1 Publication
Mutagenesisi168 – 1681R → K: Reduces activity by 99%. 1 Publication
Mutagenesisi178 – 1781E → A: Reduces activity by 99%. 2 Publications
Mutagenesisi178 – 1781E → D: Abolishes enzymatic activity. 2 Publications
Mutagenesisi178 – 1781E → Q: Abolishes enzymatic activity. 2 Publications
Mutagenesisi285 – 2851E → D: 5-fold decrease in activity. 1 Publication
Mutagenesisi288 – 2881Y → F: Reduces activity by 99%. 1 Publication

Keywords - Diseasei

Disease mutation, Leukodystrophy

Organism-specific databases

MalaCardsiASPA.
MIMi271900. phenotype.
Orphaneti314918. Mild Canavan disease.
314911. Severe Canavan disease.
PharmGKBiPA25055.

Chemistry

DrugBankiDB00128. L-Aspartic Acid.

Polymorphism and mutation databases

BioMutaiASPA.

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 313313AspartoacylasePRO_0000216871Add
BLAST

Proteomic databases

PaxDbiP45381.
PeptideAtlasiP45381.
PRIDEiP45381.

PTM databases

iPTMnetiP45381.
PhosphoSiteiP45381.

Expressioni

Tissue specificityi

Brain white matter, skeletal muscle, kidney, adrenal glands, lung and liver.

Gene expression databases

BgeeiENSG00000108381.
CleanExiHS_ASPA.
ExpressionAtlasiP45381. baseline and differential.
GenevisibleiP45381. HS.

Organism-specific databases

HPAiHPA022142.
HPA022145.

Interactioni

Subunit structurei

Homodimer.2 Publications

Binary interactionsi

WithEntry#Exp.IntActNotes
ACY3Q96HD93EBI-750475,EBI-3916242

Protein-protein interaction databases

BioGridi106935. 5 interactions.
DIPiDIP-60793N.
IntActiP45381. 1 interaction.
MINTiMINT-1440951.
STRINGi9606.ENSP00000263080.

Structurei

Secondary structure

1
313
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Beta strandi14 – 185Combined sources
Helixi25 – 3410Combined sources
Helixi39 – 413Combined sources
Beta strandi48 – 536Combined sources
Helixi55 – 595Combined sources
Beta strandi65 – 673Combined sources
Helixi69 – 713Combined sources
Helixi75 – 784Combined sources
Beta strandi84 – 863Combined sources
Helixi88 – 10013Combined sources
Beta strandi105 – 1084Combined sources
Beta strandi110 – 1178Combined sources
Beta strandi119 – 1213Combined sources
Beta strandi123 – 1297Combined sources
Helixi134 – 14714Combined sources
Beta strandi152 – 1565Combined sources
Beta strandi160 – 1623Combined sources
Helixi167 – 1704Combined sources
Beta strandi171 – 18111Combined sources
Helixi189 – 21022Combined sources
Beta strandi218 – 22912Combined sources
Beta strandi237 – 2393Combined sources
Beta strandi241 – 2433Combined sources
Turni245 – 2495Combined sources
Beta strandi259 – 2635Combined sources
Beta strandi269 – 2713Combined sources
Beta strandi274 – 2763Combined sources
Beta strandi278 – 2825Combined sources
Helixi286 – 2883Combined sources
Turni289 – 2924Combined sources
Beta strandi294 – 30512Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
2I3CX-ray2.80A/B2-313[»]
2O4HX-ray2.70A/B1-313[»]
2O53X-ray2.70A/B1-313[»]
2Q51X-ray2.80A/B2-313[»]
4MRIX-ray2.80A/B1-313[»]
4MXUX-ray2.60A/B1-313[»]
4NFRX-ray3.00A/B1-313[»]
4TNUX-ray2.90A/B1-313[»]
ProteinModelPortaliP45381.
SMRiP45381. Positions 9-310.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP45381.

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni70 – 712Substrate binding
Regioni164 – 1685Substrate binding

Sequence similaritiesi

Phylogenomic databases

eggNOGiENOG410IERR. Eukaryota.
COG2988. LUCA.
GeneTreeiENSGT00390000001189.
HOGENOMiHOG000232489.
HOVERGENiHBG004172.
InParanoidiP45381.
KOiK01437.
OMAiNFNEGKE.
OrthoDBiEOG091G0BL6.
PhylomeDBiP45381.
TreeFamiTF328708.

Family and domain databases

HAMAPiMF_00704. Aspartoacylase. 1 hit.
InterProiIPR016708. Aspartoacylase.
IPR007036. Aste_AspA.
[Graphical view]
PfamiPF04952. AstE_AspA. 1 hit.
[Graphical view]
PIRSFiPIRSF018001. Aspartoacylase. 1 hit.

Sequencei

Sequence statusi: Complete.

P45381-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTSCHIAEEH IQKVAIFGGT HGNELTGVFL VKHWLENGAE IQRTGLEVKP
60 70 80 90 100
FITNPRAVKK CTRYIDCDLN RIFDLENLGK KMSEDLPYEV RRAQEINHLF
110 120 130 140 150
GPKDSEDSYD IIFDLHNTTS NMGCTLILED SRNNFLIQMF HYIKTSLAPL
160 170 180 190 200
PCYVYLIEHP SLKYATTRSI AKYPVGIEVG PQPQGVLRAD ILDQMRKMIK
210 220 230 240 250
HALDFIHHFN EGKEFPPCAI EVYKIIEKVD YPRDENGEIA AIIHPNLQDQ
260 270 280 290 300
DWKPLHPGDP MFLTLDGKTI PLGGDCTVYP VFVNEAAYYE KKEAFAKTTK
310
LTLNAKSIRC CLH
Length:313
Mass (Da):35,735
Last modified:November 1, 1995 - v1
Checksum:i33C0B9B07839E7F5
GO

Natural variant

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Natural varianti16 – 161I → T in CAND; <0.5% residual enzyme activity. 2 Publications
Corresponds to variant rs769653717 [ dbSNP | Ensembl ].
VAR_039079
Natural varianti21 – 211H → P in CAND. 1 Publication
VAR_016778
Natural varianti24 – 241E → G in CAND. 1 Publication
Corresponds to variant rs104894551 [ dbSNP | Ensembl ].
VAR_016782
Natural varianti27 – 271G → R in CAND; 3% residual enzyme activity. 2 Publications
Corresponds to variant rs766328537 [ dbSNP | Ensembl ].
VAR_039080
Natural varianti57 – 571A → T in CAND. 1 Publication
VAR_016779
Natural varianti68 – 681D → A in CAND. 1 Publication
VAR_016783
Natural varianti114 – 1141D → E in CAND; <0.5% residual enzyme activity. 1 Publication
VAR_039081
Natural varianti114 – 1141D → Y in CAND. 1 Publication
VAR_016784
Natural varianti123 – 1231G → E in CAND; about 25% residual enzyme activity. 1 Publication
VAR_039082
Natural varianti143 – 1431I → T in CAND. 1 Publication
Corresponds to variant rs777936704 [ dbSNP | Ensembl ].
VAR_004995
Natural varianti152 – 1521C → R in CAND; loss of activity. 1 Publication
Corresponds to variant rs104894548 [ dbSNP | Ensembl ].
VAR_004996
Natural varianti152 – 1521C → W in CAND. 1 Publication
VAR_016785
Natural varianti152 – 1521C → Y in CAND; <0.5% residual enzyme activity. 1 Publication
VAR_039083
Natural varianti168 – 1681R → C in CAND; undetectable enzyme activity. 1 Publication
VAR_039084
Natural varianti168 – 1681R → H in CAND. 1 Publication
Corresponds to variant rs770706390 [ dbSNP | Ensembl ].
VAR_016780
Natural varianti176 – 1772Missing in CAND. 1 Publication
VAR_004997
Natural varianti181 – 1811P → T in CAND. 1 Publication
Corresponds to variant rs786204572 [ dbSNP | Ensembl ].
VAR_016781
Natural varianti183 – 1831P → H in CAND. 1 Publication
VAR_039085
Natural varianti186 – 1861V → F in CAND. 1 Publication
VAR_039086
Natural varianti195 – 1951M → R in CAND. 1 Publication
VAR_039087
Natural varianti231 – 2311Y → C in CAND. 1 Publication
Corresponds to variant rs104894550 [ dbSNP | Ensembl ].
VAR_016786
Natural varianti244 – 2441H → R in CAND. 1 Publication
VAR_016787
Natural varianti249 – 2491D → V in CAND. 2 Publications
Corresponds to variant rs104894552 [ dbSNP | Ensembl ].
VAR_016788
Natural varianti274 – 2741G → R in CAND. 2 Publications
Corresponds to variant rs761064915 [ dbSNP | Ensembl ].
VAR_004998
Natural varianti280 – 2801P → L in CAND. 1 Publication
VAR_039088
Natural varianti280 – 2801P → S in CAND. 1 Publication
Corresponds to variant rs750505963 [ dbSNP | Ensembl ].
VAR_039089
Natural varianti285 – 2851E → A in CAND; predominant mutation in Ashkenazi Jewish population; 99% loss of activity. 4 Publications
Corresponds to variant rs28940279 [ dbSNP | Ensembl ].
VAR_004999
Natural varianti287 – 2871A → T in CAND. 1 Publication
Corresponds to variant rs774323189 [ dbSNP | Ensembl ].
VAR_039090
Natural varianti295 – 2951F → S in CAND. 2 Publications
VAR_005000
Natural varianti305 – 3051A → E in CAND; pan-European origin; most prevalent among non-Jewish CAND patients; probably the most ancient mutation; loss of activity. 4 Publications
Corresponds to variant rs28940574 [ dbSNP | Ensembl ].
VAR_005001
Natural varianti310 – 3101C → G.1 Publication
Corresponds to variant rs376854191 [ dbSNP | Ensembl ].
VAR_039091

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
S67156 mRNA. Translation: AAB29190.1.
BC029128 mRNA. Translation: AAH29128.1.
CCDSiCCDS11028.1.
PIRiS38538.
RefSeqiNP_000040.1. NM_000049.2.
NP_001121557.1. NM_001128085.1.
UniGeneiHs.171142.

Genome annotation databases

EnsembliENST00000263080; ENSP00000263080; ENSG00000108381.
ENST00000456349; ENSP00000409976; ENSG00000108381.
GeneIDi443.
KEGGihsa:443.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
S67156 mRNA. Translation: AAB29190.1.
BC029128 mRNA. Translation: AAH29128.1.
CCDSiCCDS11028.1.
PIRiS38538.
RefSeqiNP_000040.1. NM_000049.2.
NP_001121557.1. NM_001128085.1.
UniGeneiHs.171142.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
2I3CX-ray2.80A/B2-313[»]
2O4HX-ray2.70A/B1-313[»]
2O53X-ray2.70A/B1-313[»]
2Q51X-ray2.80A/B2-313[»]
4MRIX-ray2.80A/B1-313[»]
4MXUX-ray2.60A/B1-313[»]
4NFRX-ray3.00A/B1-313[»]
4TNUX-ray2.90A/B1-313[»]
ProteinModelPortaliP45381.
SMRiP45381. Positions 9-310.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi106935. 5 interactions.
DIPiDIP-60793N.
IntActiP45381. 1 interaction.
MINTiMINT-1440951.
STRINGi9606.ENSP00000263080.

Chemistry

DrugBankiDB00128. L-Aspartic Acid.

PTM databases

iPTMnetiP45381.
PhosphoSiteiP45381.

Polymorphism and mutation databases

BioMutaiASPA.

Proteomic databases

PaxDbiP45381.
PeptideAtlasiP45381.
PRIDEiP45381.

Protocols and materials databases

DNASUi443.
Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENST00000263080; ENSP00000263080; ENSG00000108381.
ENST00000456349; ENSP00000409976; ENSG00000108381.
GeneIDi443.
KEGGihsa:443.

Organism-specific databases

CTDi443.
GeneCardsiASPA.
GeneReviewsiASPA.
HGNCiHGNC:756. ASPA.
HPAiHPA022142.
HPA022145.
MalaCardsiASPA.
MIMi271900. phenotype.
608034. gene.
neXtProtiNX_P45381.
Orphaneti314918. Mild Canavan disease.
314911. Severe Canavan disease.
PharmGKBiPA25055.
GenAtlasiSearch...

Phylogenomic databases

eggNOGiENOG410IERR. Eukaryota.
COG2988. LUCA.
GeneTreeiENSGT00390000001189.
HOGENOMiHOG000232489.
HOVERGENiHBG004172.
InParanoidiP45381.
KOiK01437.
OMAiNFNEGKE.
OrthoDBiEOG091G0BL6.
PhylomeDBiP45381.
TreeFamiTF328708.

Enzyme and pathway databases

BioCyciMetaCyc:HS03094-MONOMER.
BRENDAi3.5.1.15. 2681.
ReactomeiR-HSA-70614. Amino acid synthesis and interconversion (transamination).

Miscellaneous databases

EvolutionaryTraceiP45381.
GenomeRNAii443.
PROiP45381.
SOURCEiSearch...

Gene expression databases

BgeeiENSG00000108381.
CleanExiHS_ASPA.
ExpressionAtlasiP45381. baseline and differential.
GenevisibleiP45381. HS.

Family and domain databases

HAMAPiMF_00704. Aspartoacylase. 1 hit.
InterProiIPR016708. Aspartoacylase.
IPR007036. Aste_AspA.
[Graphical view]
PfamiPF04952. AstE_AspA. 1 hit.
[Graphical view]
PIRSFiPIRSF018001. Aspartoacylase. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiACY2_HUMAN
AccessioniPrimary (citable) accession number: P45381
Entry historyi
Integrated into UniProtKB/Swiss-Prot: November 1, 1995
Last sequence update: November 1, 1995
Last modified: September 7, 2016
This is version 154 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

Documents

  1. Human chromosome 17
    Human chromosome 17: entries, gene names and cross-references to MIM
  2. Human entries with polymorphisms or disease mutations
    List of human entries with polymorphisms or disease mutations
  3. Human polymorphisms and disease mutations
    Index of human polymorphisms and disease mutations
  4. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  5. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  6. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.