National and Kapodistrian University of Athens
Department of Biology
Biophysics & Bioinformatics Laboratory
Protein Information |
|
|---|---|
| Protein Name | Barrier-to-autointegration factor A |
| Accession Code | Q6NTS2 |
| Gene | banf1 |
| Organism | Xenopus laevis | African clawed frog (Taxonomy: 8355) |
| Part of Reference Proteome? | Yes |
| Sequence (Length: 90) |
Description |
Position in the Nuclear Envelope |
|
|---|---|---|
| Location | Location ID | Description |
| Nuclear Envelope | SL-0178 | The nuclear envelope is a membrane system which surrounds the nucleoplasm of eukaryotic cells. It is composed of the nuclear lamina, nuclear pore complexes and two nuclear membranes. The space between the two membranes is called the nuclear intermembrane space. | Membrane Topology |
| Topology | Source | Annotation Type |
| Unknown | UniProt | Sequence Analysis | Assigned Ontology terms |
Description |
|
|---|---|
| Non-specific DNA-binding protein that plays key roles in mitotic nuclear reassembly, chromatin organization, DNA damage response, gene expression and intrinsic immunity against foreign DNA. Contains two non-specific double-stranded DNA (dsDNA)-binding sites which promote DNA cross-bridging. Plays a key role in nuclear membrane reformation at the end of mitosis by driving formation of a single nucleus in a spindle-independent manner. Transiently cross-bridges anaphase chromosomes via its ability to bridge distant DNA sites, leading to the formation of a dense chromatin network at the chromosome ensemble surface that limits membranes to the surface. Also acts as a negative regulator of innate immune activation by restricting CGAS activity toward self-DNA upon acute loss of nuclear membrane integrity. Outcompetes CGAS for DNA-binding, thereby preventing CGAS activation and subsequent damaging autoinflammatory responses. Also involved in DNA damage response; acts by inhibiting the ADP-ribosyltransferase activity of PARP1. Involved in the recognition of exogenous dsDNA in the cytosol: associates with exogenous dsDNA immediately after its appearance in the cytosol at endosome breakdown and is required to avoid autophagy. {By SimilarityUniProtKB:O75531}. | Assigned Ontology terms |
National and Kapodistrian University of Athens
Department of Biology
Biophysics & Bioinformatics Laboratory