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Details on Person UniProt:Q9NYB0 TERF2IP

Class:IdReferenceGeneProduct:65829
_chainChangeLoginitiator methionine:1 added on Sat February 7 2015;chain:2-399 added on Sat February 7 2015;initiator methionine:1 for 65829 removed on Fri Nov 03 2023;initiator methionine: for 65829 added on Fri Nov 03 2023;initiator methionine: for 65829 removed on Fri Aug 15 2025;initiator methionine:1 for 65829 added on Fri Aug 15 2025
_displayNameUniProt:Q9NYB0 TERF2IP
_timestamp2025-08-15 21:49:37
chaininitiator methionine:1
chain:2-399
checksumEAA615777F9D3D3D
commentFUNCTION Acts both as a regulator of telomere function and as a transcription regulator. Involved in the regulation of telomere length and protection as a component of the shelterin complex (telosome). In contrast to other components of the shelterin complex, it is dispensible for telomere capping and does not participate in the protection of telomeres against non-homologous end-joining (NHEJ)-mediated repair. Instead, it is required to negatively regulate telomere recombination and is essential for repressing homology-directed repair (HDR), which can affect telomere length. Does not bind DNA directly: recruited to telomeric double-stranded 5'-TTAGGG-3' repeats via its interaction with TERF2. Independently of its function in telomeres, also acts as a transcription regulator: recruited to extratelomeric 5'-TTAGGG-3' sites via its association with TERF2 or other factors, and regulates gene expression. When cytoplasmic, associates with the I-kappa-B-kinase (IKK) complex and acts as a regulator of the NF-kappa-B signaling by promoting IKK-mediated phosphorylation of RELA/p65, leading to activate expression of NF-kappa-B target genes.SUBUNIT Associates with the I-kappa-B-kinase (IKK) core complex, composed of CHUK, IKBKB and IKBKG (By similarity). Homodimer. Component of the shelterin complex (telosome) composed of TERF1, TERF2, TINF2, TERF2IP ACD and POT1. Interacts with TERF2; the interaction is direct. Does not interact with TERF1. Interacts with SLX4/BTBD12.INTERACTION Associates with chromosomes, both at telomeres and in extratelomeric sites. Also exists as a cytoplasmic form, where it associates with the IKK complex.TISSUE SPECIFICITY Ubiquitous. Highly expressed.MISCELLANEOUS Shares a bidirectional promoter with KARS1.SIMILARITY Belongs to the RAP1 family.CAUTION Was reported to participate in the protection of telomeres against non-homologous end-joining (NHEJ)-mediated repair in the absence of TERF2 (PubMed:19763083). However, this probably does not corresponds to its primary function and experiments in mouse showed that it is dispensible for such process and is required for repression of homology-directed repair (HDR).SEQUENCE CAUTION Truncated C-terminus.SEQUENCE CAUTION Truncated N-terminus.
descriptionrecommendedName: Telomeric repeat-binding factor 2-interacting protein 1 shortName: TERF2-interacting telomeric protein 1 shortName: TRF2-interacting telomeric protein 1 alternativeName: Dopamine receptor-interacting protein 5 alternativeName: Repressor/activator protein 1 homolog shortName: RAP1 homolog shortName: hRap1
geneNameTERF2IP
DRIP5
RAP1
PP8000
identifierQ9NYB0
isSequenceChangedFALSE
keyword3D-structure
Acetylation
Activator
Chromosome
Cytoplasm
Isopeptide bond
Nucleus
Phosphoprotein
Proteomics identification
Reference proteome
Telomere
Transcription
Transcription regulation
Ubl conjugation
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
[InstanceEdit:9963647] Weiser, Joel, 2025-08-15
nameTERF2IP
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:8988712] ENSEMBL:ENSG00000166848 TERF2IP [Homo sapiens]
secondaryIdentifierTE2IP_HUMAN
B4DQN4
Q4W4Y2
Q8WYZ3
Q9NWR2
sequenceLength399
species[Species:48887] Homo sapiens
(referenceEntity)[EntityWithAccessionedSequence:174873] TERF2IP [nucleoplasm] [Homo sapiens]
[EntityWithAccessionedSequence:9007967] SUMO1-K-TERF2IP [nucleoplasm] [Homo sapiens]
(referenceSequence)[GroupModifiedResidue:9007971] sumoylated lysine (monoSUMO1 [nucleoplasm]) at unknown position
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No pathways have been reviewed or authored by UniProt:Q9NYB0 TERF2IP (65829)