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Details on Person UniProt:P42081 CD86

Class:IdReferenceGeneProduct:51706
_chainChangeLogsignal peptide:1-23 added on Fri February 6 2015;chain:24-329 added on Fri February 6 2015
_displayNameUniProt:P42081 CD86
_timestamp2026-02-20 21:57:31
chainsignal peptide:1-23
chain:24-329
checksumC249DAEEB889D911
commentFUNCTION Costimulatory molecule that belongs to the immunoglobulin superfamily that plays an important role in T-lymphocyte activation (PubMed:12196291, PubMed:7694363). Acts as the primary auxiliary signal augmenting the MHC/TCR signal in naive T-cells by acting as a ligand for the CD28 receptor which is constitutively expressed on the cell surface of T-cells (PubMed:12196291, PubMed:7694363). May play a critical role in the early events of T-cell activation and costimulation of naive T-cells, such as deciding between immunity and anergy that is made by T-cells within 24 hours after activation (PubMed:7527824). Also involved in the regulation of B cells function, plays a role in regulating the level of IgG(1) produced. Upon CD40 engagement, activates NF-kappa-B signaling pathway via phospholipase C and protein kinase C activation (By similarity). Also acts as an inhibitor of T-cell activation by acting as a ligand for CTLA4, a decoy receptor, thereby blocking CD28-mediated T-cell priming (PubMed:11279501).FUNCTION Interferes with the formation of CD86 clusters, and thus acts as a negative regulator of T-cell activation.FUNCTION (Microbial infection) Acts as a receptor for adenovirus subgroup B.SUBUNIT Homodimer (PubMed:12606712). Interacts with MARCH8 (PubMed:12582153). Interacts (via cytoplasmic domain) with PHB1 and PHB2; the interactions increases after priming with CD40 (By similarity).SUBUNIT (Microbial infection) Interacts with adenovirus subgroup b fiber protein.SUBUNIT (Microbial infection) Interacts with Orthopoxvirus OPG038/M2 protein, inhibiting the interaction with CTLA4 and CD28.INTERACTION Expressed on the surfaces of antigen-presenting cells.PTM Polyubiquitinated; which is promoted by MARCH8 and results in endocytosis and lysosomal degradation.ONLINE INFORMATION CD86 entry
descriptionrecommendedName: T-lymphocyte activation antigen CD86 alternativeName: Activation B7-2 antigen alternativeName: B70 alternativeName: BU63 alternativeName: CTLA-4 counter-receptor B7.2 alternativeName: FUN-1 cdAntigenNameCD86/cdAntigenName
geneNameCD86
CD28LG2
identifierP42081
isSequenceChangedFALSE
keyword3D-structure
Adaptive immunity
Alternative splicing
Cell membrane
Disulfide bond
Glycoprotein
Host cell receptor for virus entry
Host-virus interaction
Immunity
Immunoglobulin domain
Membrane
Proteomics identification
Receptor
Reference proteome
Signal
Transmembrane
Transmembrane helix
Ubl conjugation
modified[InstanceEdit:9836292] Weiser, Joel, 2023-05-25
[InstanceEdit:9852000] Weiser, Joel, 2023-11-03
[InstanceEdit:9917590] Weiser, Joel, 2024-08-09
[InstanceEdit:9926675] Weiser, Joel, 2024-11-03
[InstanceEdit:9983091] Weiser, Joel, 2026-02-20
nameCD86
referenceDatabase[ReferenceDatabase:2] UniProt
referenceGene[ReferenceDNASequence:6785057] ENSEMBL:ENSG00000114013 CD86 [Homo sapiens]
secondaryIdentifierCD86_HUMAN
A0N0P0
B7Z2F3
B7Z702
E7ETN5
E9PC27
Q13655
Q6FHB1
Q6GTS4
Q7M4L5
sequenceLength329
species[Species:48887] Homo sapiens
(isoformParent)[ReferenceIsoform:145189] UniProt:P42081-2 CD86 [Homo sapiens]
[ReferenceIsoform:222487] UniProt:P42081-3 CD86 [Homo sapiens]
[ReferenceIsoform:403999] UniProt:P42081-1 CD86 [Homo sapiens]
[ReferenceIsoform:8966924] UniProt:P42081-4 CD86 [Homo sapiens]
[ReferenceIsoform:8966925] UniProt:P42081-5 CD86 [Homo sapiens]
[ReferenceIsoform:8966926] UniProt:P42081-6 CD86 [Homo sapiens]
(referenceEntity)[EntityWithAccessionedSequence:179784] CD86 [plasma membrane] [Homo sapiens]
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No pathways have been reviewed or authored by UniProt:P42081 CD86 (51706)