O75531: Barrier-to-autointegration factor (BANF1)

Barrier-to-autointegration factor (BANF1) is a 89-residue protein from Homo sapiens. This is its AlphaFold structure prediction, created 1 Aug 2025. UniProt accession: O75531.

Gene
BANF1
Organism
Homo sapiens
Length
89 residues
Mean pLDDT
96.8
Model
AF-O75531-F1 v6
Model created
1 Aug 2025
PDB structures
29

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Model confidence (pLDDT)

The mean pLDDT of this model is 96.8 (very high overall). pLDDT is AlphaFold's per-residue confidence score from 0 to 100. In MolViewer, choose the B-factor color scheme to color the model by pLDDT, because AlphaFold stores it in the B-factor column.

pLDDT bandMeaningShare of residues
Above 90Very high: backbone and side chains are usually accurate97%
70 to 90Confident: backbone generally right1%
50 to 70Low: treat with caution1%
Below 50Very low: often disordered regions1%

What pLDDT means and how to read it

Function

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 (PubMed:10908652, PubMed:11792822, PubMed:12163470, PubMed:18005698, PubMed:25991860, PubMed:28841419, PubMed:31796734, PubMed:32792394). Contains two non-specific double-stranded DNA (dsDNA)-binding sites which promote DNA cross-bridging (PubMed:9465049). 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 (PubMed:28841419). Transiently cross-bridges anaphase chromosomes via its ability to bridge distant DNA…

Subunit structure

Homodimer (PubMed:16337940, PubMed:22399800, PubMed:28841419). Heterodimerizes with BANF2 (PubMed:16337940). Interacts with ANKLE2/LEM4, leading to decreased phosphorylation by VRK1 and promoting dephosphorylation by protein phosphatase 2A (PP2A) (PubMed:22770216). Binds non-specifically to double-stranded DNA, and is found as a hexamer or dodecamer upon DNA binding. Binds to LEM…

Subcellular location

Nucleus, Chromosome, Nucleus envelope, Cytoplasm

Disease associations

Experimental structures in the PDB

Compare the prediction with experimentally determined structures of the same protein:

PDB IDMethodResolutionChains and residues
7NDYX-ray1.44 ÅA/B=2-89
7Z21X-ray1.63 ÅA/B/C/D=2-89
6UREX-ray1.65 ÅA/B=1-89
6URJX-ray1.65 ÅA/B=1-89
6URZX-ray1.65 ÅA/B=1-89
6US0X-ray1.65 ÅA/B=1-89
6US1X-ray1.65 ÅA/B=1-89
6US7X-ray1.65 ÅA/B=1-89
6USDX-ray1.65 ÅA/B=1-89
6USIX-ray1.65 ÅA/B=1-89
6URNX-ray1.68 ÅA/B=1-89
6USBX-ray1.68 ÅA/B=1-89
6URLX-ray1.72 ÅA/B=1-89
6UNTX-ray1.75 ÅA/B=1-89
6URRX-ray1.8 ÅA/B=1-89
6URKX-ray1.86 ÅA/B=1-89
1CI4X-ray1.9 ÅA/B=1-89
6GHDX-ray2.1 ÅA/C/D/E=2-89
6RPRX-ray2.26 ÅD/E=3-89
2BZFX-ray2.87 ÅA=1-89

Showing 20 of 29 experimental structures (best resolution first).

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