ORC2 Gene Summary [Human]

The origin recognition complex (ORC) is a highly conserved six subunits protein complex essential for the initiation of the DNA replication in eukaryotic cells. Studies in yeast demonstrated that ORC binds specifically to origins of replication and serves as a platform for the assembly of additional initiation factors such as Cdc6 and Mcm proteins. The protein encoded by this gene is a subunit of the ORC complex. This protein forms a core complex with ORC3, -4, and -5. It also interacts with CDC45 and MCM10, which are proteins known to be important for the initiation of DNA replication. This protein has been demonstrated to specifically associate with the origin of replication of Epstein-Barr virus in human cells, and is thought to be required for DNA replication from viral origin of replication. Alternatively spliced transcript variants have been found, one of which is a nonsense-mediated mRNA decay candidate. [provided by RefSeq, Oct 2010]

Details

Type
Protein Coding
Official Symbol
ORC2
Official Name
origin recognition complex subunit 2 [Source:HGNC Symbol;Acc:HGNC:8488]
Ensembl ID
ENSG00000115942
Bio databases IDs NCBI: 4999 Ensembl: ENSG00000115942
Aliases origin recognition complex subunit 2
Synonyms ORC2L, origin recognition complex subunit 2, origin recognition complex, subunit 2
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 ORC2 often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • Origin recognition complex subunit 2
  • DNA replication origin binding
  • protein binding

Pathways

Biological processes and signaling networks where the ORC2 gene in human plays a role, providing insight into its function and relevance in health or disease.

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
disease
  • neoplasia
  • periodontal pocket
  • plexiform neurofibroma
  • Huntington disease
regulated by
regulates
role in cell
  • transcription in
  • apoptosis
  • mitosis
  • dissociation in
  • cell cycle progression
  • G1 phase
  • dissociation
  • S phase

Subcellular Expression

Locations within the cell where the protein is known or predicted to be active, providing insight into its function and cellular context.
  • Nucleus
  • nuclear fraction
  • soluble fraction
  • chromatin fraction
  • nuclear matrix fraction
  • heterochromatic focus
  • heterochromatin
  • telomeric heterochromatin
  • Cytoplasm
  • centrosome
  • nuclear foci
  • nucleoplasm
  • nucleoli
  • nuclear matrix
  • kinetochores
  • centromeres
  • telomeres
  • chromatin
  • pericentric heterochromatin

Gene Ontology Annotations

Describes the biological processes, cellular components, and molecular functions associated with the human ORC2 gene, providing context for its role in the cell.

Biological Process

Functions and activities the gene product is involved in
  • negative regulation of transcription from RNA polymerase II promoter
  • DNA-dependent DNA replication initiation

Cellular Component

Where in the cell the gene product is active
  • heterochromatin
  • nucleus
  • chromosome, telomeric region
  • origin recognition complex
  • condensed chromosome inner kinetochore
  • centrosome
  • membrane
  • nuclear origin of replication recognition complex
  • nucleoplasm

Molecular Function

What the gene product does at the molecular level
  • DNA replication origin binding
  • protein binding

Gene-Specific Assays for Results You Can Trust

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