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Overview

Uniprot IDQ8N392
Protein NameRho GTPase-activating protein 18
Gene NameARHGAP18
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
164 QTLRKKNKQYQIPDV
255 KEKIQKSKGDDATLP

Function

Rho GTPase activating protein that suppresses F-actin polymerization by inhibiting Rho. Rho GTPase activating proteins act by converting Rho-type GTPases to an inactive GDP-bound state (PubMed:21865595). Plays a key role in tissue tension and 3D tissue shape by regulating cortical actomyosin network formation. Acts downstream of YAP1 and inhibits actin polymerization, which in turn reduces nuclear localization of YAP1 (PubMed:25778702). Regulates cell shape, spreading, and migration (PubMed:21865595)

Protein Sequence

10 MSWLSSSQGV 20 VLTAYHPSGK 30 DQTVGNSHAK 40 AGEEATSSRR 50 YGQYTMNQES 60 TTIKVMEKPP 70 FDRSISQDSL 80 DELSMEDYWI 90 ELENIKKSSE 100 NSQEDQEVVV 110 VKEPDEGELE 120 EEWLKEAGLS 130 NLFGESAGDP 140 QESIVFLSTL 150 TRTQAAAVQK 160 RVETVSQTLR 170 KKNKQYQIPD 180 VRDIFAQQRE 190 SKETAPGGTE 200 SQSLRTNENK 210 YQGRDDEASN 220 LVGEEKLIPP 230 EETPAPETDI 240 NLEVSFAEQA 250 LNQKESSKEK 260 IQKSKGDDAT 270 LPSFRLPKDK 280 TGTTRIGDLA 290 PQDMKKVCHL 300 ALIELTALYD 310 VLGIELKQQK 320 AVKIKTKDSG 330 LFCVPLTALL 340 EQDQRKVPGM 350 RIPLIFQKLI 360 SRIEERGLET 370 EGLLRIPGAA 380 IRIKNLCQEL 390 EAKFYEGTFN 400 WESVKQHDAA 410 SLLKLFIREL 420 PQPLLSVEYL 430 KAFQAVQNLP 440 TKKQQLQALN 450 LLVILLPDAN 460 RDTLKALLEF 470 LQRVIDNKEK 480 NKMTVMNVAM 490 VMAPNLFMCH 500 ALGLKSSEQR 510 EFVMAAGTAN 520 TMHLLIKYQK 530 LLWTIPKFIV 540 NQVRKQNTEN 550 HKKDKRAMKK 560 LLKKMAYDRE 570 KYEKQDKSTN 580 DADVPQGVIR 590 VQAPHLSKVS 600 MAIQLTEELK 610 ASDVLARFLS 620 QESGVAQTLK 630 KGEVFLYEIG 640 GNIGERCLDD 650 DTYMKDLYQL 660 NPNAEWVIKS KPL

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005737 cytoplasm
Cellular Component GO:0005881 cytoplasmic microtubule
Cellular Component GO:0005829 cytosol
Cellular Component GO:0001726 ruffle
Molecular Function GO:0045296 cadherin binding
Molecular Function GO:0005096 GTPase activator activity
Biological Process GO:0032956 regulation of actin cytoskeleton organization
Biological Process GO:0030833 regulation of actin filament polymerization
Biological Process GO:2000145 regulation of cell motility
Biological Process GO:0008360 regulation of cell shape
Biological Process GO:0051056 regulation of small GTPase mediated signal transduction
Biological Process GO:0007264 small GTPase-mediated signal transduction

Reference

[1] Wu Q, Li Z, Gong T, Zheng X, Zhou X et al.. Porphyromonas gingivalis infection induces lysine lactylation reprogramming in human umbilical vein endothelial cells.. Front Cell Infect Microbiol 16:1706727. 2026. PMID: 41696360.