FBL Gene Summary [Human]

This gene product is a component of a nucleolar small nuclear ribonucleoprotein (snRNP) particle thought to participate in the first step in processing preribosomal RNA. It is associated with the U3, U8, and U13 small nuclear RNAs and is located in the dense fibrillar component (DFC) of the nucleolus. The encoded protein contains an N-terminal repetitive domain that is rich in glycine and arginine residues, like fibrillarins in other species. Its central region resembles an RNA-binding domain and contains an RNP consensus sequence. Antisera from approximately 8% of humans with the autoimmune disease scleroderma recognize fibrillarin. [provided by RefSeq, Jul 2008]

Details

Type
Protein Coding
Official Symbol
FBL
Official Name
fibrillarin [Source:HGNC Symbol;Acc:HGNC:3599]
Ensembl ID
ENSG00000105202
Bio databases IDs NCBI: 2091 Ensembl: ENSG00000105202
Aliases fibrillarin
Synonyms FIB, fibrillarin, FLRN, Nop1, RNU3IP1
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 FBL often fold into stable, three-dimensional structures and are associated with specific biological functions, such as binding to DNA, other proteins, or small molecules.
  • RGG domain
  • RNA recognition motif
  • alpha helix
  • transcription factor binding
  • enzyme
  • protein binding
  • AdoMet_MTases
  • S-adenosylmethionine-dependent methyltransferase
  • RNA binding
  • protein methyltransferase
  • ATPase binding
  • histone methyltransferase
  • binding protein
  • Fibrillarin
  • glycine arginine rich domain
  • RNA-binding domain
  • N-methyltransferase

Top Findings

The most significant associations for this gene, including commonly observed domains, pathway involvement, and functional highlights based on current data.
regulates
  • NFkB (complex)
  • Gm22357
regulated by
disease
  • colorectal cancer
  • Huntington disease
  • colon epithelial cancer
  • colon adenocarcinoma
  • systemic autoimmune syndrome
  • septic shock
  • infection by vesicular stomatitis virus
role in cell
  • cell viability
  • apoptosis
  • activation in
  • damage in
  • base-excision repair in
  • processing in

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
  • interchromatin granule cluster fractions
  • nucleolar fraction
  • fibrillar center
  • pre-ribosome
  • metaphase plate
  • granular components
  • gems
  • dense fibrillar component
  • chromosome
  • inner nuclear membrane
  • nucleoplasm
  • nucleolus derived foci
  • nucleoli
  • coiled body
  • Cajal bodies
  • perikaryon
  • detergent-soluble fraction

Gene Ontology Annotations

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

Biological Process

Functions and activities the gene product is involved in
  • snoRNA localization
  • chromatin remodeling
  • box C/D snoRNA 3'-end processing
  • ribosomal small subunit biogenesis
  • rRNA methylation
  • osteoblast differentiation
  • rRNA processing

Cellular Component

Where in the cell the gene product is active
  • box C/D snoRNP complex
  • granular component
  • nucleus
  • small-subunit processome
  • extracellular vesicular exosome
  • membrane
  • Cajal body
  • nucleolus
  • fibrillar center
  • nucleoplasm

Molecular Function

What the gene product does at the molecular level
  • rRNA methyltransferase activity
  • RNA binding
  • protein binding
  • TFIID-class transcription factor binding
  • ATPase binding

Gene-Specific Assays for Results You Can Trust

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