UniProt:Q9UHA4 LAMTOR3

chain
  • chain:1-124
checksum 0A5196CF41D83D13
comment
  • FUNCTION As part of the Ragulator complex it is involved in amino acid sensing and activation of mTORC1, a signaling complex promoting cell growth in response to growth factors, energy levels, and amino acids (PubMed:20381137, PubMed:22980980, PubMed:28935770, PubMed:29107538, PubMed:29123114, PubMed:29158492, PubMed:30181260). Activated by amino acids through a mechanism involving the lysosomal V-ATPase, the Ragulator plays a dual role for the small GTPases Rag (RagA/RRAGA, RagB/RRAGB, RagC/RRAGC and/or RagD/RRAGD): it (1) acts as a guanine nucleotide exchange factor (GEF), activating the small GTPases Rag and (2) mediates recruitment of Rag GTPases to the lysosome membrane (PubMed:22980980, PubMed:28935770, PubMed:29107538, PubMed:29123114, PubMed:29158492, PubMed:30181260). Activated Ragulator and Rag GTPases function as a scaffold recruiting mTORC1 to lysosomes where it is in turn activated (PubMed:22980980, PubMed:28935770, PubMed:29107538, PubMed:29123114, PubMed:29158492, PubMed:30181260). Adapter protein that enhances the efficiency of the MAP kinase cascade facilitating the activation of MAPK2 (By similarity).SUBUNIT Part of the Ragulator complex composed of LAMTOR1, LAMTOR2, LAMTOR3, LAMTOR4 and LAMTOR5 (PubMed:20381137, PubMed:22980980, PubMed:28935770, PubMed:29107538, PubMed:29123114, PubMed:29158492, PubMed:29285400, PubMed:31601708, PubMed:32868926, PubMed:35338845, PubMed:36103527, PubMed:36697823). LAMTOR4 and LAMTOR5 form a heterodimer that interacts, through LAMTOR1, with a LAMTOR2, LAMTOR3 heterodimer (PubMed:20381137, PubMed:22980980). Interacts with LAMTOR1 and LAMTOR2; the interaction is direct (PubMed:20381137, PubMed:22980980). The Ragulator complex interacts with both the mTORC1 complex and heterodimers constituted of the Rag GTPases RagA/RRAGA, RagB/RRAGB, RagC/RRAGC and RagD/RRAGD; regulated by amino acid availability (PubMed:20381137, PubMed:32868926). The Ragulator complex interacts with SLC38A9; the probable amino acid sensor (PubMed:25561175, PubMed:25567906, PubMed:32868926). Component of the lysosomal folliculin complex (LFC), composed of FLCN, FNIP1 (or FNIP2), RagA/RRAGA or RagB/RRAGB GDP-bound, RagC/RRAGC or RagD/RRAGD GTP-bound, and Ragulator (PubMed:31672913, PubMed:31704029, PubMed:32868926). Interacts with MAP2K1/MEK1 and MAPK2 (By similarity). Interacts with MORG1 (By similarity).INTERACTION Recruited to lysosome and endosome membranes by LAMTOR1.ALTERNATIVE PRODUCTS Belongs to the LAMTOR3 family.
crossReference
databaseName UniProt
dbId 59307
description
  • recommendedName: fullName evidence="21"Ragulator complex protein LAMTOR3 alternativeName: Late endosomal/lysosomal adaptor and MAPK and MTOR activator 3 alternativeName: MEK-binding partner 1 shortName: Mp1 alternativeName: Mitogen-activated protein kinase kinase 1-interacting protein 1 alternativeName: Mitogen-activated protein kinase scaffold protein 1
displayName UniProt:Q9UHA4 LAMTOR3
geneName
  • LAMTOR3
  • MAP2K1IP1
  • MAPKSP1
  • PRO2783
identifier Q9UHA4
isSequenceChanged false
keyword
  • 3D-structure
  • Alternative splicing
  • Endosome
  • Membrane
  • Proteomics identification
  • Reference proteome
modified [InstanceEdit:9926675] Weiser, Joel, 2024-11-03
moleculeType Protein
name
  • LAMTOR3
otherIdentifier
  • 11718768_a_at
  • 11718769_a_at
  • 16978301
  • 217971_PM_at
  • 217971_at
  • 227562_PM_at
  • 227562_at
  • 2779398
  • 2779399
  • 2779400
  • 2779409
  • 2779410
  • 2779411
  • 2779412
  • 2779413
  • 2779414
  • 2779415
  • 2779418
  • 2779421
  • 2779423
  • 2779424
  • 2779425
  • 2779426
  • 2779427
  • 2872528
  • 46103_at
  • 46221_i_at
  • 46222_r_at
  • 8101925
  • 8649
  • A_23_P110362
  • A_32_P10311
  • A_33_P3251480
  • GE80264
  • GE87054
  • GO:0005085
  • GO:0005515
  • GO:0005737
  • GO:0005765
  • GO:0005768
  • GO:0005770
  • GO:0005886
  • GO:0005925
  • GO:0008104
  • GO:0010008
  • GO:0016020
  • GO:0019209
  • GO:0031902
  • GO:0032006
  • GO:0032008
  • GO:0035579
  • GO:0038202
  • GO:0043410
  • GO:0060090
  • GO:0070062
  • GO:0070821
  • GO:0071230
  • GO:0071986
  • GO:0098772
  • GO:1902414
  • GO:1902533
  • GO:1904263
  • GO:1990877
  • HMNXSV003011044
  • Hs.332556.0.S1_3p_at
  • ILMN_1659415
  • PH_hs_0030174
  • PH_hs_0037100
  • TC04001416.hg
  • TC04002643.hg
  • g11496276_3p_at
physicalEntity
referenceDatabase [ReferenceDatabase:2] UniProt
referenceGene
referenceTranscript
schemaClass ReferenceGeneProduct
secondaryIdentifier
  • LTOR3_HUMAN
  • B2R4A1
  • J3KMX4
  • Q9H364
sequenceLength 124
species [Species:48887] Homo sapiens
stId uniprot:Q9UHA4
url http://purl.uniprot.org/uniprot/Q9UHA4

Referrals

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