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Overview

Uniprot IDP61765
Protein NameSyntaxin-binding protein 1
Gene NameStxbp1
OrganismRattus norvegicus

Kla Sites from experimental identification

Position Flanking peptide
13 LKAVVGEKIMHDVIK
165 SPHKAQMKNPILERL
20 KIMHDVIKKVKKKGE
213 QDKLDAYKADDPTMG
225 TMGEGPDKARSQLLI
294 LWIALRHKHIAEVSQ
308 QEVTRSLKDFSSSKR
321 KRMNTGEKTTMRDLS
333 DLSQMLKKMPQYQKE
339 KKMPQYQKELSKYST
343 QYQKELSKYSTHLHL
364 HYQGTVDKLCRVEQD
493 MEDTIEDKLDTKHYP
497 IEDKLDTKHYPYIST
524 ARYGHWHKNKAPGEY
526 YGHWHKNKAPGEYRS
583 QKLLDTLKKLNKTDE
92 HSLISDFKDPPTAKY
98 FKDPPTAKYRAAHVF

Function

Participates in the regulation of synaptic vesicle docking and fusion through interaction with GTP-binding proteins (PubMed:21689256). Essential for neurotransmission and binds syntaxin, a component of the synaptic vesicle fusion machinery probably in a 1:1 ratio. Can interact with syntaxins 1, 2, and 3 but not syntaxin 4. Involved in the release of neurotransmitters from neurons through interacting with SNARE complex component STX1A and mediating the assembly of the SNARE complex at synaptic membranes (By similarity). May play a role in determining the specificity of intracellular fusion reactions

Protein Sequence

10 MAPIGLKAVV 20 GEKIMHDVIK 30 KVKKKGEWKV 40 LVVDQLSMRM 50 LSSCCKMTDI 60 MTEGITIVED 70 INKRREPLPS 80 LEAVYLITPS 90 EKSVHSLISD 100 FKDPPTAKYR 110 AAHVFFTDSC 120 PDALFNELVK 130 SRAAKVIKTL 140 TEINIAFLPY 150 ESQVYSLDSA 160 DSFQSFYSPH 170 KAQMKNPILE 180 RLAEQIATLC 190 ATLKEYPAVR 200 YRGEYKDNAL 210 LAQLIQDKLD 220 AYKADDPTMG 230 EGPDKARSQL 240 LILDRGFDPS 250 SPVLHELTFQ 260 AMSYDLLPIE 270 NDVYKYETSG 280 IGEARVKEVL 290 LDEDDDLWIA 300 LRHKHIAEVS 310 QEVTRSLKDF 320 SSSKRMNTGE 330 KTTMRDLSQM 340 LKKMPQYQKE 350 LSKYSTHLHL 360 AEDCMKHYQG 370 TVDKLCRVEQ 380 DLAMGTDAEG 390 EKIKDPMRAI 400 VPILLDANVS 410 TYDKIRIILL 420 YIFLKNGITE 430 ENLNKLIQHA 440 QIPPEDSEII 450 TNMAHLGVPI 460 VTDSTLRRRS 470 KPERKERISE 480 QTYQLSRWTP 490 IIKDIMEDTI 500 EDKLDTKHYP 510 YISTRSSASF 520 STTAVSARYG 530 HWHKNKAPGE 540 YRSGPRLIIF 550 ILGGVSLNEM 560 RCAYEVTQAN 570 GKWEVLIGST 580 HILTPQKLLD 590 TLKKLNKTDE EISS

Gene Ontology

Classification GO ID Description
Cellular Component GO:0030424 axon
Cellular Component GO:0005737 cytoplasm
Cellular Component GO:0005829 cytosol
Cellular Component GO:0098888 extrinsic component of presynaptic membrane
Cellular Component GO:0098978 glutamatergic synapse
Cellular Component GO:0098688 parallel fiber to Purkinje cell synapse
Cellular Component GO:0048471 perinuclear region of cytoplasm
Cellular Component GO:0045335 phagocytic vesicle
Cellular Component GO:0005886 plasma membrane
Cellular Component GO:0031091 platelet alpha granule
Cellular Component GO:0098794 postsynapse
Cellular Component GO:0098793 presynapse
Cellular Component GO:0098831 presynaptic active zone cytoplasmic component
Cellular Component GO:0099523 presynaptic cytosol
Cellular Component GO:0032991 protein-containing complex
Cellular Component GO:0030141 secretory granule
Cellular Component GO:0043195 terminal bouton
Molecular Function GO:0042802 identical protein binding
Molecular Function GO:0060090 molecular adaptor activity
Molecular Function GO:0043274 phospholipase binding
Molecular Function GO:0019904 protein domain specific binding
Molecular Function GO:0019901 protein kinase binding
Molecular Function GO:0000149 SNARE binding
Molecular Function GO:0019905 syntaxin binding
Molecular Function GO:0017075 syntaxin-1 binding
Biological Process GO:0007412 axon target recognition
Biological Process GO:0071346 cellular response to type II interferon
Biological Process GO:0003006 developmental process involved in reproduction
Biological Process GO:0061670 evoked neurotransmitter secretion
Biological Process GO:0006887 exocytosis
Biological Process GO:0006886 intracellular protein transport
Biological Process GO:0060292 long-term synaptic depression
Biological Process GO:0043524 negative regulation of neuron apoptotic process
Biological Process GO:0031333 negative regulation of protein-containing complex assembly
Biological Process GO:0035544 negative regulation of SNARE complex assembly
Biological Process GO:0032229 negative regulation of synaptic transmission, GABAergic
Biological Process GO:0007274 neuromuscular synaptic transmission
Biological Process GO:0007269 neurotransmitter secretion
Biological Process GO:0070527 platelet aggregation
Biological Process GO:0002576 platelet degranulation
Biological Process GO:0045956 positive regulation of calcium ion-dependent exocytosis
Biological Process GO:0045921 positive regulation of exocytosis
Biological Process GO:1903296 positive regulation of glutamate secretion, neurotransmission
Biological Process GO:0043306 positive regulation of mast cell degranulation
Biological Process GO:0010808 positive regulation of synaptic vesicle priming
Biological Process GO:0106022 positive regulation of vesicle docking
Biological Process GO:0031340 positive regulation of vesicle fusion
Biological Process GO:0099525 presynaptic dense core vesicle exocytosis
Biological Process GO:0072659 protein localization to plasma membrane
Biological Process GO:0050821 protein stabilization
Biological Process GO:2000367 regulation of acrosomal vesicle exocytosis
Biological Process GO:0010807 regulation of synaptic vesicle priming
Biological Process GO:0031338 regulation of vesicle fusion
Biological Process GO:0032355 response to estradiol
Biological Process GO:0035493 SNARE complex assembly
Biological Process GO:0016188 synaptic vesicle maturation
Biological Process GO:0016082 synaptic vesicle priming
Biological Process GO:0006904 vesicle docking involved in exocytosis

Reference

[1] Yao Y, Bade R, Li G, Zhang A, Zhao H et al.. Global-Scale Profiling of Differential Expressed Lysine-Lactylated Proteins in the Cerebral Endothelium of Cerebral Ischemia-Reperfusion Injury Rats.. Cell Mol Neurobiol 43(5):1989-2004. 2023 Jul. PMID: 36030297.

[2] Sheng L, Xu H, Wang Y, Ni J, Xiang T et al.. Systematic analysis of lysine lactylation in nucleus pulposus cells.. iScience 27(11):111157. 2024 Nov 15. PMID: 39524337.

[3] 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.