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Overview

Uniprot IDF1LPB9
Protein NameRabphilin-3A
Gene NameRph3a
OrganismRattus norvegicus

Kla Sites from experimental identification

Position Flanking peptide
432 HLLPGASKSNKLRTK
590 WLKPDMGKKAKHKTQ
63 RVIARAEKMEAMEQE
656 SAKGERLKHWYECLK

Function

Plays an essential role in docking and fusion steps of regulated exocytosis. At the presynaptic level, RPH3A is recruited by RAB3A to the synaptic vesicle membrane in a GTP-dependent manner where it modulates synaptic vesicle trafficking and calcium-triggered neurotransmitter release. In the post-synaptic compartment, forms a ternary complex with GRIN2A and DLG4 and regulates NMDA receptor stability. Also plays a role in the exocytosis of arginine vasopressin hormone

Protein Sequence

10 MTDTVVNRWM 20 YPGDGPLQSN 30 DKEQLQAGWS 40 VHPGAQTDRQ 50 RKQEELTDEE 60 KEIINRVIAR 70 AEKMEAMEQE 80 RIGRLVDRLE 90 TMRKNVAGDG 100 VNRCILCGEQ 110 LGMLGSACVV 120 CEDCKKNVCT 130 KCGVETSNNR 140 PHPVWLCKIC 150 LEQREVWKRS 160 GAWFFKGFPK 170 QVLPQPMPIK 180 KTKPQQPAGE 190 PATQEQPTPE 200 SRHPARAPAR 210 GDMEDRRAPG 220 QKPGPDLTSA 230 PGRGSHGPPT 240 RRASEARMST 250 TTRDSEGWDH 260 GHGGGAGDTS 270 RSPGGEQGLR 280 RANSVQASRP 290 APASMPSPAP 300 PQPVQPGPPG 310 GSRAAPGPGR 320 FPEQSTEAPP 330 SDPGYPGAVA 340 PAREERTGPT 350 GGFQAAPHTA 360 GPYSQAAPAR 370 QPPPAEEEEE 380 EANSYDSDEA 390 TTLGALEFSL 400 LYDQDNSNLQ 410 CTIIRAKGLK 420 PMDSNGLADP 430 YVKLHLLPGA 440 SKSNKLRTKT 450 LRNTRNPVWN 460 ETLQYHGITE 470 EDMQRKTLRI 480 SVCDEDKFGH 490 NEFIGETRFS 500 LKKLKANQRK 510 NFNICLERVI 520 PMKRAGTTGS 530 ARGMALYEEE 540 QVERIGDIEE 550 RGKILVSLMY 560 STQQGGLIVG 570 IIRCVHLAAM 580 DANGYSDPFV 590 KLWLKPDMGK 600 KAKHKTQIKK 610 KTLNPEFNEE 620 FFYDIKHSDL 630 AKKSLDISVW 640 DYDIGKSNDY 650 IGGCQLGISA 660 KGERLKHWYE 670 CLKNKDKKIE 680 RWHQLQNENH VSSD

Gene Ontology

Classification GO ID Description
Cellular Component GO:0043197 dendritic spine
Cellular Component GO:0098850 extrinsic component of synaptic vesicle membrane
Cellular Component GO:0045211 postsynaptic membrane
Molecular Function GO:0008289 lipid binding
Molecular Function GO:0031267 small GTPase binding
Molecular Function GO:0008270 zinc ion binding
Biological Process GO:0006886 intracellular protein transport
Biological Process GO:0016082 synaptic vesicle priming

Reference

[1] Chen Y, Sun W, Sun Z, Zhao H, Wu T et al.. Effect of electroacupuncture on hippocampal protein lactylation in a rat model of vascular dementia.. Front Neurol 16:1629474. 2025. PMID: 40963935.