LCT Gene Summary [Human]

The protein encoded by this gene belongs to the glycosyl hydrolase 1 family of proteins. The encoded preproprotein is proteolytically processed to generate the mature enzyme. This enzyme is integral to the plasma membrane and has both phlorizin hydrolase activity and lactase activity. Mutations in this gene are associated with congenital lactase deficiency. Polymorphisms in this gene are associated with lactase persistence, in which intestinal lactase activity persists at childhood levels into adulthood. [provided by RefSeq, Jan 2016]

Details

Type
Protein Coding
Official Symbol
LCT
Official Name
lactase [Source:HGNC Symbol;Acc:HGNC:6530]
Ensembl ID
ENSG00000115850
Bio databases IDs NCBI: 3938 Ensembl: ENSG00000115850
Aliases lactase
Synonyms Gm100, LAC, lactase, LPH, LPH1, LPHL
Species
Human, Homo sapiens
OrthologiesMouseRat

Protein Domains

A protein domain is a distinct structural or functional region within a protein that can evolve, function, and exist independently of the rest of the protein chain. These domains in human LCT often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • glycosylceramidase
  • glucosylceramidase
  • enzyme
  • cleavage site
  • beta-galactosidase
  • Glycosyl hydrolase family 1
  • beta-glucosidase
  • Glycosyl hydrolases
  • galactosylceramidase
  • transferase
  • glycosidase
  • protein homodimerization
  • lactase

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
disease
  • lactose intolerance
  • congenital lactase deficiency
  • osteoarthritis
  • diabetes mellitus
regulated by
regulates
  • cellobiose
  • quercetin
  • lactose
  • glycosylceramide
  • LCT
  • carbohydrate
role in cell
  • response
  • homeostasis

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Plasma Membrane
  • cellular membrane
  • plasma membrane extracellular face
  • brush border

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human LCT gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • lactose catabolic process
  • glycosylceramide catabolic process
  • cellobiose catabolic process

Cellular Component

Where in the cell the gene product is active
  • plasma membrane

Molecular Function

What the gene product does at the molecular level
  • glucosylceramidase activity
  • galactosylceramidase activity
  • protein homodimerization activity
  • glycosylceramidase activity
  • cellobiose glucosidase activity
  • beta-glucosidase activity
  • lactase activity

Gene-Specific Assays for Results You Can Trust

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