UniProt:O43561-2 LAT

chain
  • chain:1-262
checksum BCD80AE7DCA64153
comment
  • FUNCTION Required for TCR (T-cell antigen receptor)- and pre-TCR-mediated signaling, both in mature T-cells and during their development (PubMed:25907557, PubMed:23514740). Involved in FCGR3 (low affinity immunoglobulin gamma Fc region receptor III)-mediated signaling in natural killer cells and FCER1 (high affinity immunoglobulin epsilon receptor)-mediated signaling in mast cells. Couples activation of these receptors and their associated kinases with distal intracellular events such as mobilization of intracellular calcium stores, PKC activation, MAPK activation or cytoskeletal reorganization through the recruitment of PLCG1, GRB2, GRAP2, and other signaling molecules.SUBUNIT When phosphorylated, interacts directly with the PIK3R1 subunit of phosphoinositide 3-kinase and the SH2 domains of GRB2, GRAP, GRAP2, PLCG1 and PLCG2. Interacts indirectly with CBL, SOS, VAV, and LCP2. Interacts with SHB, SKAP2 and CLNK (By similarity). Interacts with FCGR1A. Interacts with GRB2, PLCG1 and THEMIS upon TCR activation in thymocytes (By similarity). Interacts with THEMIS2 (By similarity).SUBUNIT (Microbial infection) Interacts with herpes virus 1/HHV-1 protein US3; this interaction prevents the interaction between LAT and TRAF6.INTERACTION Present in lipid rafts.ALTERNATIVE PRODUCTS Expressed in thymus, T-cells, NK cells, mast cells and, at lower levels, in spleen. Present in T-cells but not B-cells (at protein level).PTM Phosphorylated on tyrosines by ZAP70 upon TCR activation, or by SYK upon other immunoreceptor activation; which leads to the recruitment of multiple signaling molecules. Is one of the most prominently tyrosine-phosphorylated proteins detected following TCR engagement. May be dephosphorylated by PTPRJ. Phosphorylated by ITK leading to the recruitment of VAV1 to LAT-containing complexes.PTM Palmitoylation of Cys-26 and Cys-29 is required for raft targeting and efficient phosphorylation.PTM 'Lys-63'-linked ubiquitinated by TRAF6.DISEASE The disease is caused by variants affecting the gene represented in this entry.MISCELLANEOUS Engagement of killer inhibitory receptors (KIR) disrupts the interaction of PLCG1 with LAT and blocks target cell-induced activation of PLC, maybe by inducing the dephosphorylation of LAT.
crossReference
databaseName UniProt
dbId 149573
description
  • recommendedName: Linker for activation of T-cells family member 1 alternativeName: 36 kDa phosphotyrosine adapter protein shortName: pp36 alternativeName: p36-38
displayName UniProt:O43561-2 LAT
geneName
  • LAT
identifier O43561
isSequenceChanged false
isoformParent
keyword
  • Adaptive immunity
  • Alternative splicing
  • Cell membrane
  • Direct protein sequencing
  • Immunity
  • Lipoprotein
  • Mast cell degranulation
  • Membrane
  • Palmitate
  • Phosphoprotein
  • Reference proteome
  • Signal-anchor
  • Transmembrane
  • Transmembrane helix
  • Ubl conjugation
modified [InstanceEdit:12187927] Wright, Adam, 2024-03-12
name
  • LAT
otherIdentifier
  • 11726777_a_at
  • 11743748_a_at
  • 16817537
  • 209881_PM_s_at
  • 209881_s_at
  • 211005_PM_at
  • 211005_at
  • 27040
  • 3654964
  • 3654965
  • 3654966
  • 3654967
  • 3654969
  • 3654970
  • 3654972
  • 3654974
  • 3654975
  • 3654976
  • 3654977
  • 3654978
  • 3654981
  • 3654983
  • 3654984
  • 3654985
  • 3654986
  • 3654987
  • 40688_at
  • 7994535
  • 7994541
  • A_23_P44105
  • A_23_P44112
  • GE55241
  • GE81922
  • GO:0001772
  • GO:0002250
  • GO:0002260
  • GO:0002376
  • GO:0005515
  • GO:0005634
  • GO:0005794
  • GO:0005886
  • GO:0005911
  • GO:0006954
  • GO:0006955
  • GO:0007165
  • GO:0007229
  • GO:0007265
  • GO:0008180
  • GO:0010467
  • GO:0016020
  • GO:0016192
  • GO:0019722
  • GO:0019901
  • GO:0023052
  • GO:0030159
  • GO:0035556
  • GO:0036211
  • GO:0042110
  • GO:0043226
  • GO:0043303
  • GO:0045121
  • GO:0045860
  • GO:0048872
  • GO:0050852
  • GO:0050863
  • GO:0060090
  • HMNXSV003017433
  • ILMN_1691539
  • ILMN_1750188
  • ILMN_2281320
  • ILMN_2404625
  • PH_hs_0026523
  • PH_hs_0034136
  • g2828023_3p_a_at
  • g2828025_3p_at
  • p33449
  • p33450
physicalEntity
referenceDatabase [ReferenceDatabase:2] UniProt
referenceGene
referenceTranscript
schemaClass ReferenceIsoform
secondaryIdentifier
  • LAT_HUMAN
  • B7WPI0
  • C7C5T6
  • G5E9K3
  • O43919
sequenceLength 262
species [Species:48887] Homo sapiens
url https://purl.uniprot.org/uniprot/O43561-2
variantIdentifier O43561-2

Referrals

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(referenceSequence)
(interactor)
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