Tbio ACER1 Alkaline ceramidase 1

Protein Summary

Description

Hydrolyzes the sphingolipid ceramide into sphingosine and free fatty acid at an optimal pH of 8.0. Has a highly restricted substrate specificity for the natural stereoisomer of ceramide with D-erythro-sphingosine but not D-ribo-phytosphingosine or D-erythro-dihydrosphingosine as a backbone. May have a role in regulating the levels of bioactive lipids ceramide and sphingosine 1-phosphate, as well as complex sphingolipids (By similarity). Ceramides are synthesized during epidermal differentiation and accumulate within the interstices of the stratum corneum, where they represent critical components of the epidermal permeability barrier. Excess cellular ceramide can trigger antimitogenic signals and induce apoptosis, and the ceramide metabolites sphingosine and sphingosine-1-phosphate (S1P) are important bioregulatory molecules. Ceramide hydrolysis in the nucleated cell layers regulates keratinocyte proliferation and apoptosis in response to external stress. Ceramide hydrolysis also occurs at the stratum corneum, releasing free sphingoid base that functions as an endogenous antimicrobial agent. ACER1 is highly expressed in epidermis and catalyzes the hydrolysis of very long chain ceramides to generate sphingosine (Houben et al., 2006 [PubMed 16477081]; Sun et al., 2008 [PubMed 17713573]).[supplied by OMIM, Jul 2010]

Uniprot Accession IDs

• Q8TDN7
• AlkCDase 1

Gene Name

• ACER1

Ensembl ID

• ENST00000301452
• ENSP00000301452
• ENSG00000167769

Symbol

• ASAH3
• ASAH3
• ALKCDase1

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
gene perturbation	0.68
cell type or tissue	0.65
biological process	0.61
cellular component	0.51
metabolite	0.49

Protein Classes

No PANTHER Classes or DTO Classes found

IDG Development Level Summary

Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 19.01   (req: < 5)

Gene RIFs: 2   (req: <= 3)

Antibodies: 134   (req: <= 50)

Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 19.01   (req: >= 5)

Gene RIFs: 2   (req: > 3)

Antibodies: 134   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 13

Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligand: 0

Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 0