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Abhd5/CGI-58

Developmental stage

Detected in fetal epidermis from 49 to 135 days estimated gestational age (at protein level).

Domain

The HXXXXD motif is essential for acyltransferase activity and may constitute the binding site for the phosphate moiety of the glycerol-3-phosphate.

Function

Coenzyme A-dependent lysophosphatidic acid acyltransferase that catalyzes the transfer of an acyl group on a lysophosphatidic acid (PubMed:18606822). Functions preferentially with 1-oleoyl-lysophosphatidic acid followed by 1-palmitoyl-lysophosphatidic acid, 1-stearoyl-lysophosphatidic acid and 1-arachidonoyl-lysophosphatidic acid as lipid acceptor. Functions preferentially with arachidonoyl-CoA followed by oleoyl-CoA as acyl group donors (By similarity). Functions in phosphatidic acid biosynthesis (PubMed:18606822). May regulate the cellular storage of triacylglycerol through activation of the phospholipase PNPLA2 (PubMed:16679289). Involved in keratinocyte differentiation (PubMed:18832586). Regulates lipid droplet fusion (By similarity).

Involvement in disease

Chanarin-Dorfman syndrome

CDS

An autosomal recessive inborn error of lipid metabolism with multisystemic accumulation of triglycerides although plasma concentrations are normal. Clinical characteristics are congenital generalized ichthyosis, vacuolated leukocytes, hepatomegaly, myopathy, cataracts, neurosensory hearing loss and developmental delay. The disorder presents at birth with generalized, fine, white scaling of the skin and a variable degree of erythema resembling non-bullous congenital ichthyosiform erythroderma.

None

The disease is caused by variants affecting the gene represented in this entry.

Sequence similarities

Belongs to the peptidase S33 family. ABHD4/ABHD5 subfamily.

Tissue specificity

Widely expressed in various tissues, including lymphocytes, liver, skeletal muscle and brain. Expressed by upper epidermal layers and dermal fibroblasts in skin, hepatocytes and neurons (at protein level).

Cellular localization

  • Cytoplasm
  • Lipid droplet
  • Cytoplasm
  • Cytosol
  • Colocalized with PLIN and ADRP on the surface of lipid droplets. The localization is dependent upon the metabolic status of the adipocytes and the activity of PKA (By similarity).

Alternative names

NCIE2, CGI-58, ABHD5, 1-acylglycerol-3-phosphate O-acyltransferase ABHD5, Abhydrolase domain-containing protein 5, Lipid droplet-binding protein CGI-58

Target type

Proteins

Primary research area

Metabolism

Molecular weight

39096Da