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Protein

Long neurotoxin OH-34

Gene
N/A
Organism
Ophiophagus hannah (King cobra) (Naja hannah)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

Binds with high affinity to muscular (alpha-1/CHRNA1) and neuronal (alpha-7/CHRNA7) nicotinic acetylcholine receptor (nAChR) and inhibits acetylcholine from binding to the receptor, thereby impairing neuromuscular and neuronal transmission.By similarity

GO - Molecular functioni

Keywordsi

Molecular functionAcetylcholine receptor inhibiting toxin, Ion channel impairing toxin, Neurotoxin, Postsynaptic neurotoxin, Toxin

Names & Taxonomyi

Protein namesi
Recommended name:
Long neurotoxin OH-34
OrganismiOphiophagus hannah (King cobra) (Naja hannah)
Taxonomic identifieri8665 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiLepidosauriaSquamataBifurcataUnidentataEpisquamataToxicoferaSerpentesColubroideaElapidaeElapinaeOphiophagus

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Secreted

Pathology & Biotechi

Toxic dosei

LD50 is >300 µg/kg by intraperitoneal injection into mice.1 Publication

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei‹1 – 201 PublicationAdd BLAST›20
ChainiPRO_500009332521 – 90Long neurotoxin OH-34Add BLAST70

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi23 ↔ 41By similarity
Disulfide bondi34 ↔ 62By similarity
Disulfide bondi47 ↔ 51By similarity
Disulfide bondi66 ↔ 77By similarity
Disulfide bondi78 ↔ 83By similarity

Keywords - PTMi

Disulfide bond

Proteomic databases

TopDownProteomicsiQ53B53.

Expressioni

Tissue specificityi

Expressed by the venom gland.Curated

Structurei

3D structure databases

ProteinModelPortaliQ53B53.
SMRiQ53B53.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Signal

Family and domain databases

CDDicd00206. snake_toxin. 1 hit.
InterProiView protein in InterPro
IPR003571. Snake_3FTx.
IPR018354. Snake_toxin_con_site.
IPR035076. Toxin/TOLIP.
PfamiView protein in Pfam
PF00087. Toxin_TOLIP. 1 hit.
PROSITEiView protein in PROSITE
PS00272. SNAKE_TOXIN. 1 hit.

Sequencei

Sequence statusi: Fragment.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q53B53-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
KTLLLTLVVV TILCLDLGYT TKCYITPDVK SETCPDGENI CYTKTWCDVW
60 70 80 90
CGSRGRRVDL GCAATCPIVK PGVNINCCST DNCNPFPKRS
Length:90
Mass (Da):9,867
Last modified:May 24, 2005 - v1
Checksum:i242347E8FA23E22A
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Non-terminal residuei11

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY596933 mRNA. Translation: AAT97255.1.

Similar proteinsi

Entry informationi

Entry namei3L234_OPHHA
AccessioniPrimary (citable) accession number: Q53B53
Entry historyiIntegrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: May 24, 2005
Last modified: November 22, 2017
This is version 47 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
Annotation programAnimal Toxin Annotation Program

Miscellaneousi

Keywords - Technical termi

Direct protein sequencing

Documents

  1. SIMILARITY comments
    Index of protein domains and families