UniProt:Q96P48 ARAP1

chain
  • chain:1-1450
checksum A4B6CCC28EC4CD0D
comment
  • FUNCTION Phosphatidylinositol 3,4,5-trisphosphate-dependent GTPase-activating protein that modulates actin cytoskeleton remodeling by regulating ARF and RHO family members (PubMed:11804590, PubMed:19666464). Activated by phosphatidylinositol 3,4,5-trisphosphate (PtdIns(3,4,5)P3) binding and, to a lesser extent, by phosphatidylinositol 3,4-bisphosphate (PtdIns(3,4)P2) binding (PubMed:11804590). Has a preference for ARF1 and ARF5 (PubMed:11804590, PubMed:19666464). Positively regulates the ring size of circular dorsal ruffles and promotes macropinocytosis (PubMed:22573888). Acts as a bridging factor in osteoclasts to control actin and membrane dynamics (By similarity). Regulates the condensing of osteoclast podosomes into sealing zones which segregate the bone-facing membrane from other membrane domains and are required for osteoclast resorption activity (By similarity). Also regulates recruitment of the AP-3 complex to endosomal membranes and trafficking of lysosomal membrane proteins to the ruffled membrane border of osteoclasts to modulate bone resorption (By similarity). Regulates the endocytic trafficking of EGFR (PubMed:18764928, PubMed:18939958, PubMed:21275903). Regulates the incorporation of CD63 and CD9 into multivesicular bodies (PubMed:38682696). Required in the retinal pigment epithelium (RPE) for photoreceptor survival due to its role in promoting RPE phagocytosis (By similarity).SUBUNIT Interacts with SH3KBP1/CIN85 (via SH3 domains) (PubMed:21275903). The interaction is independent of EGF and does not affect ARAP1 GTPase-activating activity but is involved in regulating ubiquitination and endocytic trafficking of EGFR (PubMed:21275903). ARAP1 competes with E3 ubiquitin-protein ligase CBL for binding to SH3KBP1, preventing interaction of CBL with SH3KBP1; this is likely to regulate SH3KBP1-mediated internalization of EGFR (By similarity). Interacts with TNFRSF10A (PubMed:18165900).INTERACTION Associated with Golgi stacks in resting cells (PubMed:11804590). Throughout the cytoplasm and in surface protrusions in cells that are in the process of attaching to a surface and spreading (PubMed:11804590). Localizes to actin-rich podosomes, sealing zones and early endosomes in osteoclasts (By similarity).ALTERNATIVE PRODUCTS Detected in heart, skeletal muscle, spleen, kidney, liver, placenta, lung, peripheral blood leukocytes, adrenal gland, bone marrow, brain, lymph node, mammary gland, prostate, spinal cord, stomach, thyroid and trachea.DOMAIN The first PH domain, PH 1, interacts with PtdIns(3,4,5)P3 which stimulates ARAP1 GTPase-activating activity and is also required for ARAP1-mediated regulation of endocytic trafficking of EGFR (PubMed:18939958, PubMed:19666464). It does not mediate PtdIns(3,4,5)P3-dependent recruitment of ARAP1 to membranes although this may be mediated by other PH domains (PubMed:19666464).PTM Phosphorylated by PTK6 following EGF stimulation which enhances EGFR signaling by delaying EGFR down-regulation; the interaction is mediated by the SH2 domain of PTK6 (PubMed:20554524). Phosphorylation promotes association with the Golgi apparatus and endosomes (PubMed:18939958).
created [InstanceEdit:400710] Schmidt, EE, 2009-03-25 05:33:35
crossReference
databaseName UniProt
dbId 412998
description
  • recommendedName: Arf-GAP with Rho-GAP domain, ANK repeat and PH domain-containing protein 1 alternativeName: Centaurin-delta-2 shortName: Cnt-d2
displayName UniProt:Q96P48 ARAP1
geneName
  • ARAP1
  • CENTD2
  • KIAA0782
identifier Q96P48
isSequenceChanged false
keyword
  • 3D-structure
  • Alternative splicing
  • Cell junction
  • Cell membrane
  • Cell projection
  • Cytoplasm
  • Endosome
  • Golgi apparatus
  • GTPase activation
  • Membrane
  • Metal-binding
  • Phosphoprotein
  • Proteomics identification
  • Reference proteome
  • Repeat
  • Zinc
  • Zinc-finger
modified [InstanceEdit:9948485] Weiser, Joel, 2025-05-21
moleculeType Protein
name
  • ARAP1
otherIdentifier
  • 116985
  • 11719038_a_at
  • 11740162_a_at
  • 11758732_at
  • 16741779
  • 212516_3p_at
  • 212516_PM_at
  • 212516_at
  • 238911_PM_at
  • 238911_at
  • 3381235
  • 3381237
  • 3381238
  • 3381239
  • 3381240
  • 3381242
  • 3381243
  • 3381244
  • 3381245
  • 3381246
  • 3381247
  • 3381248
  • 3381249
  • 3381250
  • 3381251
  • 3381252
  • 3381253
  • 3381254
  • 3381255
  • 3381256
  • 3381259
  • 3381260
  • 3381261
  • 3381262
  • 3381263
  • 3381264
  • 3381265
  • 3381266
  • 3381267
  • 3381268
  • 3381269
  • 3381270
  • 3381271
  • 3381272
  • 3381273
  • 3381274
  • 3381275
  • 3381276
  • 3381277
  • 3381278
  • 3381279
  • 3381280
  • 3381281
  • 3381284
  • 3381285
  • 3381286
  • 3381288
  • 3381290
  • 3381291
  • 3381292
  • 3381293
  • 3381294
  • 3381295
  • 3381296
  • 3381297
  • 3381298
  • 3381299
  • 3381300
  • 3381301
  • 3381302
  • 3381303
  • 3381304
  • 3381306
  • 3381308
  • 3381309
  • 3381310
  • 3381314
  • 3381361
  • 3381362
  • 3381363
  • 3381364
  • 34206_PM_at
  • 34206_at
  • 7950197
  • 85926_at
  • 92043_at
  • A_23_P105184
  • A_24_P398432
  • A_33_P3416583
  • GE53485
  • GO:0001726
  • GO:0001921
  • GO:0002090
  • GO:0002102
  • GO:0005096
  • GO:0005515
  • GO:0005547
  • GO:0005654
  • GO:0005737
  • GO:0005768
  • GO:0005769
  • GO:0005771
  • GO:0005794
  • GO:0005795
  • GO:0005802
  • GO:0005829
  • GO:0005886
  • GO:0007015
  • GO:0007165
  • GO:0008270
  • GO:0008360
  • GO:0016020
  • GO:0019897
  • GO:0030100
  • GO:0031344
  • GO:0031702
  • GO:0032956
  • GO:0042995
  • GO:0043226
  • GO:0043547
  • GO:0045124
  • GO:0045494
  • GO:0046872
  • GO:0050766
  • GO:0051056
  • GO:0051130
  • GO:0051491
  • GO:0051497
  • GO:0070161
  • GO:0098772
  • HMNXSV003030070
  • Hs.132760.0.S1_3p_at
  • Hs.21264.0.S1_3p_at
  • Hs.21264.0.S1_3p_s_at
  • ILMN_1772233
  • ILMN_1786357
  • PH_hs_0022925
  • TC11003491.hg
physicalEntity
referenceDatabase [ReferenceDatabase:2] UniProt
referenceGene
referenceTranscript
schemaClass ReferenceGeneProduct
secondaryIdentifier
  • ARAP1_HUMAN
  • A3KLL7
  • B2RTS2
  • O94879
  • Q4LDD5
  • Q59FI7
  • Q6PHS3
  • Q8WU51
  • Q96HP6
  • Q96L71
sequenceLength 1450
species [Species:48887] Homo sapiens
stId uniprot:Q96P48
url http://purl.uniprot.org/uniprot/Q96P48
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