Gene Information
Gene NameIKBR
OrganismHomo sapiens (Human)
Gene Length1378
Protein NamesTonsoku-like protein (Inhibitor of kappa B-related protein) (I-kappa-B-related protein) (IkappaBR) (NF-kappa-B inhibitor-like protein 2) (Nuclear factor of kappa light polypeptide gene enhancer in B-cells inhibitor-like 2)
Target NameNA
Target TypeNA
Gene AgeNA
Evolutionary StageNA
AlphaFoldDBQ96HA7
Gene CardTONSL
Uniprot IDQ96HA7
PfamPF12796; PF13516; PF13181
In ASDno
Allosteric PredictionNA
Ortholog in AnimalsNA
OhnologsNA
ParalogsNA
TissueNA
Tissue SpecificityExpressed in heart, skeletal muscle and tracheal epithelial cells. {ECO:0000269|PubMed:7738005}.
Pharmacological Animal ModelsNULL(Chimpanzee);NULL(Mouse);0.001635(Rat);0.012121(Rabbit)
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 5JA4  (X-ray  2.42A 
DBSNP rs778155094  rs1335783881  rs563710728  rs2229314  rs2229315  rs775551492  rs370196996  rs777654833  rs778625348  rs755055463  rs7830832  rs755575416  rs1342198195  rs137933176  rs1586681982  rs4925856  rs1554878402 
Subcellular location [CC]Nucleus {ECO:0000269|PubMed:21055983, ECO:0000269|PubMed:21055984, ECO:0000269|PubMed:9242696}. Chromosome {ECO:0000269|PubMed:21055983, ECO:0000269|PubMed:21055984, ECO:0000269|PubMed:26527279, ECO:0000269|PubMed:27338793, ECO:0000269|PubMed:29478807}. Cytoplasm {ECO:0000269|PubMed:7738005}. Note=Mainly nuclear (PubMed:21055983, PubMed:21055984). Localizes to DNA damage sites, accumulates at stressed replication forks (PubMed:21055983, PubMed:21055984, PubMed:26527279, PubMed:27338793). Recruited to stalled or collapsed replication forks following histone replacement by histone chaperones ASF1A and the CAF-1 complex: TONSL acts as histone reader that recognizes and binds newly synthesized histones (PubMed:29478807). {ECO:0000269|PubMed:21055983, ECO:0000269|PubMed:21055984, ECO:0000269|PubMed:26527279, ECO:0000269|PubMed:27338793, ECO:0000269|PubMed:29478807}.
Mouse PG classificationNA
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