HPS4 Gene Summary [Human]

This gene encodes a protein component of biogenesis of lysosome-related organelles complexes (BLOC). BLOC complexes are important for the formation of endosomal-lysosomal organelles such as melanosomes and platelet dense granules. Mutations in this gene result in subtype 4 of Hermansky-Pudlak syndrome, a form of albinism. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2012]

Details

Type
Processed Transcript
Official Symbol
HPS4
Official Name
HPS4 biogenesis of lysosomal organelles complex 3 subunit 2 [Source:HGNC Symbol;Acc:HGNC:15844]
Ensembl ID
ENSG00000100099
Bio databases IDs NCBI: 89781 Ensembl: ENSG00000100099
Aliases HPS4 biogenesis of lysosomal organelles complex 3 subunit 2
Synonyms 2010205O06Rik, BLOC-3, BLOC3S2, C130020P05Rik, HPS4 biogenesis of lysosomal organelles complex 3 subunit 2, HPS4, biogenesis of lysosomal organelles complex 3 subunit 2, LE, mKIAA1667
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 HPS4 often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • protein dimerization
  • guanyl-nucleotide exchange factor
  • Intu longin-like domain 3
  • enzyme binding
  • protein homodimerization
  • protein binding
  • First Longin domain of INTU, CCZ1 and HPS4

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
binds
disease
  • hereditary disorder
  • hermansky-pudlak syndrome type 4
  • ischemic stroke
  • Hermansky-Pudlak syndrome
  • generalized epilepsy
regulated by
regulates
role in cell
  • accumulation in
  • accumulation
  • differentiation
  • organization
  • assembly
  • silencing in
  • recovery in
  • pigmentation

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Cytoplasm
  • membrane fraction
  • cellular membrane
  • vesicles
  • lysosome
  • cytosol
  • cytoplasmic vesicles
  • melanosomes
  • secretory granules
  • cytosolic fraction

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human HPS4 gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • platelet dense granule organization
  • protein targeting
  • lysosome organization
  • melanocyte differentiation
  • vesicle-mediated transport
  • positive regulation of eye pigmentation
  • intracellular transport
  • blood coagulation
  • protein stabilization
  • hemostasis

Cellular Component

Where in the cell the gene product is active
  • cytoplasm
  • platelet dense granule
  • melanosome
  • membrane
  • BLOC-3 complex
  • cytosol
  • cytoplasmic vesicle
  • lysosomal membrane
  • lysosome

Molecular Function

What the gene product does at the molecular level
  • protein binding
  • protein homodimerization activity
  • guanyl-nucleotide exchange factor activity
  • small GTPase binding
  • protein dimerization activity

Gene-Specific Assays for Results You Can Trust

Streamline your workflow with assays designed for this gene. Our targeted dPCR and qPCR assays help you generate meaningful data – efficiently and accurately.