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Protein

Synaptosomal-associated protein 25

Gene

Snap25

Organism
Rattus norvegicus (Rat)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

t-SNARE involved in the molecular regulation of neurotransmitter release. Modulates the gating characteristics of the delayed rectifier voltage-dependent potassium channel KCNB1 in pancreatic beta cells (PubMed:12403834). May play an important role in the synaptic function of specific neuronal systems. Associates with proteins involved in vesicle docking and membrane fusion. Regulates plasma membrane recycling through its interaction with CENPF.1 Publication

GO - Molecular functioni

  • calcium-dependent protein binding Source: ParkinsonsUK-UCL
  • ion channel binding Source: UniProtKB
  • myosin binding Source: RGD
  • protein domain specific binding Source: RGD
  • protein N-terminus binding Source: RGD
  • SNAP receptor activity Source: RGD
  • SNARE binding Source: RGD
  • syntaxin-1 binding Source: RGD
  • voltage-gated potassium channel activity Source: RGD

GO - Biological processi

  • axonogenesis Source: RGD
  • calcium ion-regulated exocytosis of neurotransmitter Source: RGD
  • endosomal transport Source: RGD
  • exocytosis Source: RGD
  • growth hormone secretion Source: RGD
  • long-term memory Source: RGD
  • membrane fusion Source: GOC
  • positive regulation of hormone secretion Source: RGD
  • positive regulation of insulin secretion Source: RGD
  • potassium ion transmembrane transport Source: GOC
  • regulation of neuron projection development Source: ParkinsonsUK-UCL
  • regulation of synapse assembly Source: RGD
  • sleep Source: RGD
Complete GO annotation...

Names & Taxonomyi

Protein namesi
Recommended name:
Synaptosomal-associated protein 25
Short name:
SNAP-25
Alternative name(s):
Super protein
Short name:
SUP
Synaptosomal-associated 25 kDa protein
Gene namesi
Name:Snap25
Synonyms:Snap
OrganismiRattus norvegicus (Rat)
Taxonomic identifieri10116 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaSciurognathiMuroideaMuridaeMurinaeRattus
Proteomesi
  • UP000002494 Componenti: Unplaced

Organism-specific databases

RGDi3728. Snap25.

Subcellular locationi

GO - Cellular componenti

  • actin cytoskeleton Source: RGD
  • axon Source: MGI
  • axonal growth cone Source: MGI
  • cell junction Source: UniProtKB-KW
  • cytoplasm Source: RGD
  • cytosol Source: RGD
  • endosome Source: RGD
  • filopodium Source: RGD
  • growth cone Source: HGNC
  • intracellular organelle Source: RGD
  • lamellipodium Source: RGD
  • membrane Source: UniProtKB
  • membrane raft Source: RGD
  • neuronal cell body Source: RGD
  • neuron projection Source: HGNC
  • perinuclear region of cytoplasm Source: UniProtKB-SubCell
  • plasma membrane Source: ParkinsonsUK-UCL
  • SNARE complex Source: HGNC
  • synaptobrevin 2-SNAP-25-syntaxin-1a complex Source: RGD
  • synaptobrevin 2-SNAP-25-syntaxin-1a-complexin I complex Source: MGI
  • synaptobrevin 2-SNAP-25-syntaxin-1a-complexin II complex Source: RGD
  • terminal bouton Source: ParkinsonsUK-UCL
  • voltage-gated potassium channel complex Source: RGD
Complete GO annotation...

Keywords - Cellular componenti

Cell junction, Cell membrane, Cytoplasm, Membrane, Synapse, Synaptosome

Pathology & Biotechi

Chemistry

ChEMBLiCHEMBL1075243.

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 206206Synaptosomal-associated protein 25PRO_0000213592Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Lipidationi85 – 851S-palmitoyl cysteineBy similarity
Lipidationi88 – 881S-palmitoyl cysteineBy similarity
Lipidationi90 – 901S-palmitoyl cysteineBy similarity
Lipidationi92 – 921S-palmitoyl cysteineBy similarity
Modified residuei138 – 1381Phosphothreonine; by PKC and PKA1 Publication
Modified residuei154 – 1541PhosphoserineBy similarity
Modified residuei187 – 1871Phosphoserine; by PKC1 Publication

Post-translational modificationi

Palmitoylated. Cys-85 appears to be the main site, and palmitoylation is required for membrane association (By similarity).By similarity

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sitei180 – 1812Cleavage; by BONT/EBy similarity

Keywords - PTMi

Lipoprotein, Palmitate, Phosphoprotein

Proteomic databases

PRIDEiP60881.

2D gel databases

World-2DPAGE0004:P60881.

PTM databases

iPTMnetiP60881.
PhosphoSiteiP60881.
SwissPalmiP60881.

Miscellaneous databases

PMAP-CutDBP60881.

Interactioni

Subunit structurei

Interacts with KCNB1 (via N-terminus); reduces the voltage-dependent potassium channel KCNB1 activity in pancreatic beta cells (PubMed:12403834). Interacts with CENP and OTOF. Found in a complex containing SYT1, SV2B and syntaxin-1. Associates with the BLOC-1 complex. Isoform 1 and isoform 2 interact with BLOC1S6 (By similarity). Part of the SNARE core complex containing SNAP25, VAMP2 and STX1A. This complex binds CPLX1. Interacts with TRIM9, RIMS1, SNAPIN, and HGS. Binds STXBP6. Found in a ternary complex with STX1A and VAMP8. Interacts with EQTN. Interacts with ZDHHC13 (via ANK repeats). Interacts with ZDHHC17 (via ANK repeats) (By similarity).By similarity1 Publication

Binary interactionsi

WithEntry#Exp.IntActNotes
Rph3aP477094EBI-1027214,EBI-1027524
Srcin1Q9QXY23EBI-1027214,EBI-1394088
Stx1aP3285110EBI-1027214,EBI-539720

GO - Molecular functioni

  • calcium-dependent protein binding Source: ParkinsonsUK-UCL
  • ion channel binding Source: UniProtKB
  • myosin binding Source: RGD
  • protein domain specific binding Source: RGD
  • protein N-terminus binding Source: RGD
  • SNAP receptor activity Source: RGD
  • SNARE binding Source: RGD
  • syntaxin-1 binding Source: RGD

Protein-protein interaction databases

BioGridi247095. 10 interactions.
DIPiDIP-29205N.
IntActiP60881. 16 interactions.
MINTiMINT-95953.

Structurei

Secondary structure

1
206
Legend: HelixTurnBeta strand
Show more details
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Helixi7 – 8276Combined sources
Helixi142 – 20160Combined sources

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1JTHX-ray2.00A/C1-82[»]
1N7SX-ray1.45C7-83[»]
D141-204[»]
1SFCX-ray2.40C/G/K1-83[»]
D/H/L120-206[»]
1URQX-ray2.00C7-83[»]
D142-204[»]
3HD7X-ray3.40C/G7-83[»]
D/H141-204[»]
3IPDX-ray4.80C/G7-83[»]
D/H141-204[»]
3J96electron microscopy7.60M17-204[»]
3J97electron microscopy7.80M7-204[»]
3J98electron microscopy8.40M17-204[»]
3J99electron microscopy8.20M17-204[»]
5CCGX-ray3.50C/I7-83[»]
D/J141-204[»]
5CCHX-ray3.60C7-83[»]
D141-204[»]
5CCIX-ray4.10C7-83[»]
D141-204[»]
DisProtiDP00068.
ProteinModelPortaliP60881.
SMRiP60881. Positions 10-78, 141-204.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP60881.

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini19 – 8163t-SNARE coiled-coil homology 1PROSITE-ProRule annotationAdd
BLAST
Domaini140 – 20263t-SNARE coiled-coil homology 2PROSITE-ProRule annotationAdd
BLAST

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni1 – 7575Interaction with CENPFBy similarityAdd
BLAST

Compositional bias

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Compositional biasi85 – 928Cys-rich

Sequence similaritiesi

Belongs to the SNAP-25 family.Curated
Contains 2 t-SNARE coiled-coil homology domains.PROSITE-ProRule annotation

Keywords - Domaini

Coiled coil, Repeat

Phylogenomic databases

HOVERGENiHBG056971.
InParanoidiP60881.
KOiK18211.
PhylomeDBiP60881.

Family and domain databases

InterProiIPR000928. SNAP-25.
IPR000727. T_SNARE_dom.
[Graphical view]
PfamiPF00835. SNAP-25. 1 hit.
[Graphical view]
SMARTiSM00397. t_SNARE. 2 hits.
[Graphical view]
PROSITEiPS50192. T_SNARE. 2 hits.
[Graphical view]

Sequences (2)i

Sequence statusi: Complete.

This entry describes 2 isoformsi produced by alternative splicing. AlignAdd to basket

Note: Isoforms differ by the usage of two alternative homologous exons (5a and 5b) which code for positions 56 to 94 and differ only in 9 positions out of 39.

Isoform 1 (identifier: P60881-1) [UniParc]FASTAAdd to basket

Also known as: SNAP-25b

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MAEDADMRNE LEEMQRRADQ LADESLESTR RMLQLVEESK DAGIRTLVML
60 70 80 90 100
DEQGEQLERI EEGMDQINKD MKEAEKNLTD LGKFCGLCVC PCNKLKSSDA
110 120 130 140 150
YKKAWGNNQD GVVASQPARV VDEREQMAIS GGFIRRVTND ARENEMDENL
160 170 180 190 200
EQVSGIIGNL RHMALDMGNE IDTQNRQIDR IMEKADSNKT RIDEANQRAT

KMLGSG
Length:206
Mass (Da):23,315
Last modified:April 13, 2004 - v1
Checksum:iFBED2B082A4CB6A6
GO
Isoform 2 (identifier: P60881-2) [UniParc] [UniParc]FASTAAdd to basket

Also known as: SNAP-25a

The sequence of this isoform differs from the canonical sequence as follows:
     58-89: ERIEEGMDQINKDMKEAEKNLTDLGKFCGLCV → DRVEEGMNHINQDMKEAEKNLKDLGKCCGLFI

Show »
Length:206
Mass (Da):23,336
Checksum:iE272652C701EA984
GO

Alternative sequence

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Alternative sequencei58 – 8932ERIEE…CGLCV → DRVEEGMNHINQDMKEAEKN LKDLGKCCGLFI in isoform 2. 2 PublicationsVSP_010020Add
BLAST

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB003991 mRNA. Translation: BAA20151.1.
AB003992 mRNA. Translation: BAA20152.1.
AF245227 mRNA. Translation: AAF81202.1.
U56262 mRNA. Translation: AAA99826.1.
BC087699 mRNA. Translation: AAH87699.1.
U56261 mRNA. Translation: AAA99825.1.
RefSeqiNP_001257504.1. NM_001270575.1. [P60881-2]
NP_001257505.1. NM_001270576.1. [P60881-2]
NP_112253.1. NM_030991.3. [P60881-1]
UniGeneiRn.107689.

Genome annotation databases

GeneIDi25012.
KEGGirno:25012.
UCSCiRGD:3728. rat.

Keywords - Coding sequence diversityi

Alternative splicing

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AB003991 mRNA. Translation: BAA20151.1.
AB003992 mRNA. Translation: BAA20152.1.
AF245227 mRNA. Translation: AAF81202.1.
U56262 mRNA. Translation: AAA99826.1.
BC087699 mRNA. Translation: AAH87699.1.
U56261 mRNA. Translation: AAA99825.1.
RefSeqiNP_001257504.1. NM_001270575.1. [P60881-2]
NP_001257505.1. NM_001270576.1. [P60881-2]
NP_112253.1. NM_030991.3. [P60881-1]
UniGeneiRn.107689.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
EntryMethodResolution (Å)ChainPositionsPDBsum
1JTHX-ray2.00A/C1-82[»]
1N7SX-ray1.45C7-83[»]
D141-204[»]
1SFCX-ray2.40C/G/K1-83[»]
D/H/L120-206[»]
1URQX-ray2.00C7-83[»]
D142-204[»]
3HD7X-ray3.40C/G7-83[»]
D/H141-204[»]
3IPDX-ray4.80C/G7-83[»]
D/H141-204[»]
3J96electron microscopy7.60M17-204[»]
3J97electron microscopy7.80M7-204[»]
3J98electron microscopy8.40M17-204[»]
3J99electron microscopy8.20M17-204[»]
5CCGX-ray3.50C/I7-83[»]
D/J141-204[»]
5CCHX-ray3.60C7-83[»]
D141-204[»]
5CCIX-ray4.10C7-83[»]
D141-204[»]
DisProtiDP00068.
ProteinModelPortaliP60881.
SMRiP60881. Positions 10-78, 141-204.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi247095. 10 interactions.
DIPiDIP-29205N.
IntActiP60881. 16 interactions.
MINTiMINT-95953.

Chemistry

ChEMBLiCHEMBL1075243.

PTM databases

iPTMnetiP60881.
PhosphoSiteiP60881.
SwissPalmiP60881.

2D gel databases

World-2DPAGE0004:P60881.

Proteomic databases

PRIDEiP60881.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi25012.
KEGGirno:25012.
UCSCiRGD:3728. rat.

Organism-specific databases

CTDi6616.
RGDi3728. Snap25.

Phylogenomic databases

HOVERGENiHBG056971.
InParanoidiP60881.
KOiK18211.
PhylomeDBiP60881.

Miscellaneous databases

EvolutionaryTraceiP60881.
NextBioi605093.
PMAP-CutDBP60881.
PROiP60881.

Family and domain databases

InterProiIPR000928. SNAP-25.
IPR000727. T_SNARE_dom.
[Graphical view]
PfamiPF00835. SNAP-25. 1 hit.
[Graphical view]
SMARTiSM00397. t_SNARE. 2 hits.
[Graphical view]
PROSITEiPS50192. T_SNARE. 2 hits.
[Graphical view]
ProtoNetiSearch...

Publicationsi

« Hide 'large scale' publications
  1. Kataoka M.
    Submitted (MAY-1997) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1 AND 2).
  2. "Cloning of the SNAP-25 gene from a rat brain cDNA library."
    Cho A.R., You K.H.
    Submitted (MAR-2000) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2).
    Tissue: Brain.
  3. "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
    The MGC Project Team
    Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1).
    Tissue: Brain.
  4. "SNARE complex proteins, including the cognate pair VAMP-2 and syntaxin-4, are expressed in cultured oligodendrocytes."
    Madison D.L., Krueger W.H., Cheng D., Trapp B.D., Pfeiffer S.E.
    J. Neurochem. 72:988-998(1999) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 10-190 (ISOFORM 1).
    Tissue: Brain.
  5. Lubec G., Afjehi-Sadat L., Diao W., Kang S.U., Lubec S.
    Submitted (SEP-2007) to UniProtKB
    Cited for: PROTEIN SEQUENCE OF 46-69; 84-94; 104-119; 125-136 AND 143-161, IDENTIFICATION BY MASS SPECTROMETRY.
    Strain: Sprague-Dawley.
    Tissue: Brain, Hippocampus and Spinal cord.
  6. "The 25 kDa synaptosomal-associated protein SNAP-25 is the major methionine-rich polypeptide in rapid axonal transport and a major substrate for palmitoylation in adult CNS."
    Hess D.T., Slater T.M., Wilson M.C., Skene J.H.P.
    J. Neurosci. 12:4634-4641(1992) [PubMed] [Europe PMC] [Abstract]
    Cited for: PALMITOYLATION, SUBCELLULAR LOCATION.
  7. "Differential phosphorylation of SNAP-25 in vivo by protein kinase C and protein kinase A."
    Hepp R., Cabaniols J.-P., Roche P.A.
    FEBS Lett. 532:52-56(2002) [PubMed] [Europe PMC] [Abstract]
    Cited for: PHOSPHORYLATION AT THR-138 AND SER-187.
  8. "Differential subcellular localization of SNAP-25a and SNAP-25b RNA transcripts in spinal motoneurons and plasticity in expression after nerve injury."
    Jacobsson G., Piehl F., Bark I.C., Zhang X., Meister B.
    Brain Res. Mol. Brain Res. 37:49-62(1996) [PubMed] [Europe PMC] [Abstract]
    Cited for: SUBCELLULAR LOCATION OF RNA TRANSCRIPTS.
  9. "Hrs-2 is an ATPase implicated in calcium-regulated secretion."
    Bean A.J., Seifert R., Chen Y.A., Sacks R., Scheller R.H.
    Nature 385:826-829(1997) [PubMed] [Europe PMC] [Abstract]
    Cited for: INTERACTION WITH HGS.
  10. "Mixed and non-cognate SNARE complexes. Characterization of assembly and biophysical properties."
    Fasshauer D., Antonin W., Margittai M., Pabst S., Jahn R.
    J. Biol. Chem. 274:15440-15446(1999) [PubMed] [Europe PMC] [Abstract]
    Cited for: IDENTIFICATION IN A TERNARY COMPLEX WITH STX1A AND VAMP8.
  11. "Direct interaction of the Rab3 effector RIM with Ca2+ channels, SNAP-25, and synaptotagmin."
    Coppola T., Magnin-Luethi S., Perret-Menoud V., Gattesco S., Schiavo G., Regazzi R.
    J. Biol. Chem. 276:32756-32762(2001) [PubMed] [Europe PMC] [Abstract]
    Cited for: INTERACTION WITH RIMS1.
  12. "Amisyn, a novel syntaxin-binding protein that may regulate SNARE complex assembly."
    Scales S.J., Hesser B.A., Masuda E.S., Scheller R.H.
    J. Biol. Chem. 277:28271-28279(2002) [PubMed] [Europe PMC] [Abstract]
    Cited for: INTERACTION WITH STXBP6.
  13. "Synaptosome-associated protein of 25 kilodaltons modulates Kv2.1 voltage-dependent K(+) channels in neuroendocrine islet beta-cells through an interaction with the channel N terminus."
    MacDonald P.E., Wang G., Tsuk S., Dodo C., Kang Y., Tang L., Wheeler M.B., Cattral M.S., Lakey J.R., Salapatek A.M., Lotan I., Gaisano H.Y.
    Mol. Endocrinol. 16:2452-2461(2002) [PubMed] [Europe PMC] [Abstract]
    Cited for: FUNCTION, INTERACTION WITH KCNB1, SUBCELLULAR LOCATION.
  14. "Crystal structure of a SNARE complex involved in synaptic exocytosis at 2.4 A resolution."
    Sutton R.B., Fasshauer D., Jahn R., Brunger A.T.
    Nature 395:347-353(1998) [PubMed] [Europe PMC] [Abstract]
    Cited for: X-RAY CRYSTALLOGRAPHY (2.4 ANGSTROMS) OF 1-83 AND 120-206 IN COMPLEX WITH STX1A AND VAMP2.
  15. "Crystal structure and biophysical properties of a complex between the N-terminal SNARE region of SNAP25 and syntaxin 1a."
    Misura K.M.S., Gonzalez L.C. Jr., May A.P., Scheller R.H., Weis W.I.
    J. Biol. Chem. 276:41301-41309(2001) [PubMed] [Europe PMC] [Abstract]
    Cited for: X-RAY CRYSTALLOGRAPHY (2.0 ANGSTROMS) OF 1-83 IN COMPLEX WITH STX1A.
  16. "High resolution structure, stability, and synaptotagmin binding of a truncated neuronal SNARE complex."
    Ernst J.A., Brunger A.T.
    J. Biol. Chem. 278:8630-8636(2003) [PubMed] [Europe PMC] [Abstract]
    Cited for: X-RAY CRYSTALLOGRAPHY (1.45 ANGSTROMS) OF 7-83 AND 141-204 IN COMPLEX WITH STX1A AND VAMP2.

Entry informationi

Entry nameiSNP25_RAT
AccessioniPrimary (citable) accession number: P60881
Secondary accession number(s): P13795
, P36974, P70557, P70558, Q8IXK3, Q96FM2, Q9BR45
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 13, 2004
Last sequence update: April 13, 2004
Last modified: May 11, 2016
This is version 133 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.