ASpdb: an integrative knowledgebase of human protein isoforms from experimental and AI-predicted structures
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Center for Computational Systems Medicine
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Protein Summary

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AS Summary

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Protein Functional Features

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Gene Isoform Structures and Expression Levels

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Protein Structures

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pLDDT Score Distribution

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Ramachandran Plot of Protein Structures

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Potential Active Site Information

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Protein Structure and Feature Comparision

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Protein-Protein Interaction

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Related Drugs

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Related Diseases

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Clinically Important Variants

Protein:ASAH2

Protein Summary

check button Gene summary
Gene name: ASAH2
ASpdb.0 ID: 56624
Gene
Gene symbol

ASAH2

Gene ID

56624

Gene nameN-acylsphingosine amidohydrolase 2
SynonymsBCDase|HNAC1|LCDase|N-CDase|NCDase
Cytomap

10q11.23

Type of geneprotein-coding
Descriptionneutral ceramidaseN-acylsphingosine amidohydrolase (non-lysosomal ceramidase) 2acylsphingosine deacylase 2mitochondrial ceramidaseneutral/alkaline ceramidasenon-lysosomal ceramidase
Modification date20240305
UniProtAcc

Q9NR71


check button Gene ontology of this gene with evidence of Inferred from Direct Assay (IDA) from Entrez
PartnerGeneGO IDGO termPubMed ID
GeneASAH2

GO:0005509

calcium ion binding

26190575

GeneASAH2

GO:0005739

mitochondrion

10781606

GeneASAH2

GO:0005794

Golgi apparatus

30154232

GeneASAH2

GO:0005886

plasma membrane

30154232

GeneASAH2

GO:0006670

sphingosine metabolic process

16229686|17475390|26190575

GeneASAH2

GO:0006672

ceramide metabolic process

26190575

GeneASAH2

GO:0008270

zinc ion binding

26190575

GeneASAH2

GO:0017040

N-acylsphingosine amidohydrolase activity

16229686|17475390|26190575|30154232

GeneASAH2

GO:0046513

ceramide biosynthetic process

17475390

GeneASAH2

GO:0046514

ceramide catabolic process

16229686|17475390

GeneASAH2

GO:0070062

extracellular exosome

24798654

GeneASAH2

GO:0071345

cellular response to cytokine stimulus

24798654



AS Summary

check button Information of the canonical protein with experimentally identified structure from PDB (2023).
UniProt AccFile namePDB IDMethodResolutionChainStartEnd
Q9NR71-1Q9NR71-1_4wgk_A.pdb4WGKX-ray2.58A100780

check button ASpdb's canonical and alternatively spliced isoform information.
accession_idgene_namecanonical_idalternative_idcanonical_lengthalternative_lengthcanonical_startcanonical_endtypeoriginalSEQvariationSEQalternative_startalternative_end
Q9NR71ASAH2Q9NR71-1Q9NR71-2780745410444Deletionnonenone409409

check buttonMultiple sequence alignment of our canonical and alternatively spliced ASAH2

check button Matched gene isoform IDs with Ensembl and RefSeq of our canonical and alternative spliced genes of ASAH2
UniProt-idENSGENSTENSP
Q9NR71-1ENSG00000188611.17ENST00000395526.9ENSP00000378897.3
Q9NR71-1ENSG00000188611.17ENST00000682911.1ENSP00000506746.1

UniProt-idNM IDNP ID
Q9NR71-1NM_019893.2NP_063946.2
Q9NR71-2NM_001143974.1NP_001137446.1

check buttonAmino acid sequences of our canonical and alternatively spliced ASAH2
accession_idProtein sequence
Q9NR71-1MAKRTFSNLETFLIFLLVMMSAITVALLSLLFITSGTIENHKDLGGHFFSTTQSPPATQGSTAAQRSTATQHSTATQSSTATQTSPVPLT
PESPLFQNFSGYHIGVGRADCTGQVADINLMGYGKSGQNAQGILTRLYSRAFIMAEPDGSNRTVFVSIDIGMVSQRLRLEVLNRLQSKYG
SLYRRDNVILSGTHTHSGPAGYFQYTVFVIASEGFSNQTFQHMVTGILKSIDIAHTNMKPGKIFINKGNVDGVQINRSPYSYLQNPQSER
ARYSSNTDKEMIVLKMVDLNGDDLGLISWFAIHPVSMNNSNHLVNSDNVGYASYLLEQEKNKGYLPGQGPFVAAFASSNLGDVSPNILGP
RCINTGESCDNANSTCPIGGPSMCIAKGPGQDMFDSTQIIGRAMYQRAKELYASASQEVTGPLASAHQWVDMTDVTVWLNSTHASKTCKP
ALGYSFAAGTIDGVGGLNFTQGKTEGDPFWDTIRDQILGKPSEEIKECHKPKPILLHTGELSKPHPWHPDIVDVQIITLGSLAITAIPGE
FTTMSGRRLREAVQAEFASHGMQNMTVVISGLCNVYTHYITTYEEYQAQRYEAASTIYGPHTLSAYIQLFRNLAKAIATDTVANLSRGPE
PPFFKQLIVPLIPSIVDRAPKGRTFGDVLQPAKPEYRVGEVAEVIFVGANPKNSVQNQTHQTFLTVEKYEATSTSWQIVCNDASWETRFY
Q9NR71-2MAKRTFSNLETFLIFLLVMMSAITVALLSLLFITSGTIENHKDLGGHFFSTTQSPPATQGSTAAQRSTATQHSTATQSSTATQTSPVPLT
PESPLFQNFSGYHIGVGRADCTGQVADINLMGYGKSGQNAQGILTRLYSRAFIMAEPDGSNRTVFVSIDIGMVSQRLRLEVLNRLQSKYG
SLYRRDNVILSGTHTHSGPAGYFQYTVFVIASEGFSNQTFQHMVTGILKSIDIAHTNMKPGKIFINKGNVDGVQINRSPYSYLQNPQSER
ARYSSNTDKEMIVLKMVDLNGDDLGLISWFAIHPVSMNNSNHLVNSDNVGYASYLLEQEKNKGYLPGQGPFVAAFASSNLGDVSPNILGP
RCINTGESCDNANSTCPIGGPSMCIAKGPGQDMFDSTQIIGRAMYQRAKSKTCKPALGYSFAAGTIDGVGGLNFTQGKTEGDPFWDTIRD
QILGKPSEEIKECHKPKPILLHTGELSKPHPWHPDIVDVQIITLGSLAITAIPGEFTTMSGRRLREAVQAEFASHGMQNMTVVISGLCNV
YTHYITTYEEYQAQRYEAASTIYGPHTLSAYIQLFRNLAKAIATDTVANLSRGPEPPFFKQLIVPLIPSIVDRAPKGRTFGDVLQPAKPE
YRVGEVAEVIFVGANPKNSVQNQTHQTFLTVEKYEATSTSWQIVCNDASWETRFYWHKGLLGLSNATVEWHIPDTAQPGIYRIRYFGHNR

Protein Functional Features

check buttonMain function of this protein. (from UniProt)
ASAH2 (go to UniProt):Q9NR71

check buttonRetention analysis result of protein across 39 protein features of UniProt such as six molecule processing features, 13 region features, four site features, six amino acid modification features, two natural variation features, five experimental info features, and 3 secondary structure features. Here, because of limited space for viewing, we only show the protein feature retention information belong to the 13 regional features. All retention annotation result can be downloaded at

download page

* Minus value of BPloci means that the break pointn is located before the CDS.
- Retained protein feature among the 13 regional features.
Accession_idSubsectionStartEndFuncitonal featureSplicing information
Q9NR71Topological domain34780Note=Lumenal;Ontology_term=ECO:0000255;evidence=ECO:0000255Type=Deletion;Start=410;End=444


Gene Isoform Structures and Expression Levels for ASAH2

check buttonGene structures of our canonical and alternative spliced genes of ASAH2
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
gene isoform structure of ASAH2

check button Expression levels of gene isoforms across GTEx.
gtex expression

check button Expression levels of gene isoforms across TCGA.
tcga expression


Protein Structures

check button PDB and CIF files of the predicted protein structures
* Here we show the 3D structure of the proteins using Mol*. AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Model confidence is shown from the pLDDT values per residue. pLDDT corresponds to the model’s prediction of its score on the local Distance Difference Test. It is a measure of local accuracy (from AlphfaFold website). To color code individual residues, we transformed individual PDB files into CIF format.
3D view using mol* of Q9NR71-1
3D view using mol* of Q9NR71-2


pLDDT Score Distribution

check button pLDDT score distribution of the predicted protein structures from AlphaFold2
* AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100.
pLDDT distribution across the protein length of Q9NR71-1
all structure
pLDDT distribution across the protein length of Q9NR71-2
all structure


Ramachandran Plot of Protein Structures


check button Ramachandran plot of the torsional angles - phi (φ)and psi (ψ) - of the residues (amino acids) contained in this protein peptide.
Ramachandran plot of Q9NR71-1
all structure
Ramachandran plot of Q9NR71-2
all structure

Potential Active Site Information


check button The potential binding sites of these proteins were identified using SiteMap, a module of the Schrodinger suite.
UniProt-idSite scoreSizeD scoreVolumeExposureEnclosureContactPhobicPhilicBalanceDon/AccResidues
Q9NR71-11.1332261.201740.5370.5270.7790.9431.3810.6332.1821.28818,19,21,22,23,25,26,119,120,121,122,123,124,125,1
26,127,162,194,196,206,207,208,210,211,213,303,456
,457,459,460,462,463,464,465,466,467,469,480,483,4
84,487,488,505,506,511,513,514,517,540,576,578,579
,591
Q9NR71-21.0554261.1091405.2710.6120.7030.8781.0840.7751.40.9046,13,14,17,18,25,28,29,31,32,33,35,36,114,116,117,
118,119,121,122,123,124,125,126,127,129,130,131,16
2,194,196,201,206,207,208,209,210,211,212,213,214,
216,217,218,257,303,421,422,424,425,427,428,429,43
0,431,432,433,434,435,438,442,444,445,448,449,452,
453,470,471,476,477,478,479,480,482,541,543,544,55
6,601,602,603,604,605,606,607,608,609,610,647,648,
651,686,687,688,720,730

Protein Structure and Feature Comparision


check button Protein Structure Comparision Using Template Modeling Scores (TM-score).
all structure

check button Protein Structure Comparision Visualization with mol*. between Canonical predicted structure (AF2)(orange) vs Canonical validated structure (PDB)(green)
3D view using mol* of Q9NR71-1_Q9NR71-1_4wgk_A.pdb

check button Protein Structure Comparision Visualization with mol*. between Canonical validated structure (PDB)(orange) vs Alternative predicted structure (AF2)(green)
3D view using mol* of Q9NR71-1_4wgk_A_Q9NR71-2.pdb

check button Protein Structure Comparision Visualization with mol*. between Canonical predicted structure (AF2)(orange) vs Alternative predicted structure (AF2)(green)
3D view using mol* of Q9NR71-1_Q9NR71-2.pdb

check button Protein Feature Comparison of the protein sequendary structures among the protiens.
./stats/secondary_structure/figure/Q9NR71-1_vs_Q9NR71-2.png
all structure<

check button Protein Feature Comparison of the relative accessible surface area (ASA) among the protiens.
./stats/relative_asa/Q9NR71-1_vs_Q9NR71-2.png
all structure<


Protein-Protein Interaction


check button Interactors from UniProt.
Accession_idSubsectionStartEndFuncitonal featureSplicing information


check button Interactors from STRING.
Gene nameInteractors


Related Drugs to ASAH2


check button Drugs targeting this gene/protein.
(DrugBank)
UniProt accessionGene nameDrugBank IDDrug nameDrug groupActions

Related Diseases to ASAH2


check button Previous studies relating to the alternative splicing of ASAH2 and disease information from the MeSH term (PubMed)
GenePMIDTitleAbstractMeSH IDMeSH term


Clinically important variants in ASAH2


check button (ClinVar, 04/20/2024)
accession_iduniprot_idgene_nameTypeVariantClinical_significance