Botulinum neurotoxin type F
Details
- Name
- Botulinum neurotoxin type F
- Synonyms
- 3.4.24.69
- BoNT/F
- Bontoxilysin-F
- Gene Name
- botF
- UniProtKB Entry
- P30996Swiss-Prot
- Organism
- Clostridium botulinum
- NCBI Taxonomy ID
- 1491
- Amino acid sequence
>lcl|BSEQ0051614|Botulinum neurotoxin type F MPVAINSFNYNDPVNDDTILYMQIPYEEKSKKYYKAFEIMRNVWIIPERNTIGTNPSDFD PPASLKNGSSAYYDPNYLTTDAEKDRYLKTTIKLFKRINSNPAGKVLLQEISYAKPYLGN DHTPIDEFSPVTRTTSVNIKLSTNVESSMLLNLLVLGAGPDIFESCCYPVRKLIDPDVVY DPSNYGFGSINIVTFSPEYEYTFNDISGGHNSSTESFIADPAISLAHELIHALHGLYGAR GVTYEETIEVKQAPLMIAEKPIRLEEFLTFGGQDLNIITSAMKEKIYNNLLANYEKIATR LSEVNSAPPEYDINEYKDYFQWKYGLDKNADGSYTVNENKFNEIYKKLYSFTESDLANKF KVKCRNTYFIKYEFLKVPNLLDDDIYTVSEGFNIGNLAVNNRGQSIKLNPKIIDSIPDKG LVEKIVKFCKSVIPRKGTKAPPRLCIRVNNSELFFVASESSYNENDINTPKEIDDTTNLN NNYRNNLDEVILDYNSQTIPQISNRTLNTLVQDNSYVPRYDSNGTSEIEEYDVVDFNVFF YLHAQKVPEGETNISLTSSIDTALLEESKDIFFSSEFIDTINKPVNAALFIDWISKVIRD FTTEATQKSTVDKIADISLIVPYVGLALNIIIEAEKGNFEEAFELLGVGILLEFVPELTI PVILVFTIKSYIDSYENKNKAIKAINNSLIEREAKWKEIYSWIVSNWLTRINTQFNKRKE QMYQALQNQVDAIKTAIEYKYNNYTSDEKNRLESEYNINNIEEELNKKVSLAMKNIERFM TESSISYLMKLINEAKVGKLKKYDNHVKSDLLNYILDHRSILGEQTNELSDLVTSTLNSS IPFELSSYTNDKILIIYFNRLYKKIKDSSILDMRYENNKFIDISGYGSNISINGNVYIYS TNRNQFGIYNSRLSEVNIAQNNDIIYNSRYQNFSISFWVRIPKHYKPMNHNREYTIINCM GNNNSGWKISLRTVRDCEIIWTLQDTSGNKENLIFRYEELNRISNYINKWIFVTITNNRL GNSRIYINGNLIVEKSISNLGDIHVSDNILFKIVGCDDETYVGIRYFKVFNTELDKTEIE TLYSNEPDPSILKNYWGNYLLYNKKYYLFNLLRKDKYITLNSGILNINQQRGVTEGSVFL NYKLYEGVEVIIRKNGPIDISNTDNFVRKNDLAYINVVDRGVEYRLYADTKSEKEKIIRT SNLNDSLGQIIVMDSIGNNCTMNFQNNNGSNIGLLGFHSNNLVASSWYYNNIRRNTSSNG CFWSSISKENGWKE
- Number of residues
- 1274
- Molecular Weight
- 146708.095
- Theoretical pI
- Not Available
- GO Classification
- Functionsmetalloendopeptidase activity / protein transmembrane transporter activity / toxin activity / zinc ion bindingProcessesinhibition of neurotransmitter uptakeComponentsextracellular region / host cell cytosol / host cell junction / host cell presynaptic membrane / integral component of membrane
- General Function
- Botulinum neurotoxin type F Botulinum toxin causes flaccid paralysis by inhibiting neurotransmitter (acetylcholine) release from the presynaptic membranes of nerve terminals of the eukaryotic host skeletal and autonomic nervous system, with frequent heart or respiratory failure. Precursor of botulinum neurotoxin F which may have 2 coreceptors; complex polysialylated gangliosides found on neural tissue and specific membrane-anchored proteins found in synaptic vesicles. Receptor proteins are exposed on host presynaptic cell membrane during neurotransmitter release, when the toxin heavy chain (HC) binds to them. Upon synaptic vesicle recycling the toxin is taken up via the endocytic pathway. When the pH of the toxin-containing endosome drops a structural rearrangement occurs so that the N-terminus of the HC forms pores that allows the light chain (LC) to translocate into the cytosol. Once in the cytosol the disulfide bond linking the 2 subunits is reduced and LC cleaves its target protein on synaptic vesicles, preventing their fusion with the cytoplasmic membrane and thus neurotransmitter release (By similarity). Whole toxin only has protease activity after reduction, which releases LC (PubMed:8505288). Requires complex eukaryotic host polysialogangliosides for full neurotoxicity (By similarity). It is not clear whether a synaptic vesicle protein acts as its receptor; there is evidence for and against SV2 fulfilling this function (By similarity).
- Specific Function
- lipid binding
- Pfam Domain Function
- Signal Regions
- Not Available
- Transmembrane Regions
- Not Available
- Cellular Location
- Secreted
- Gene sequence
- Not Available
- Chromosome Location
- Not Available
- Locus
- Not Available
- External Identifiers
Resource Link UniProtKB ID P30996 UniProtKB Entry Name BXF_CLOBO PDB ID(s) 2A8A, 2A97, 3FIE, 3FII - General References
- East AK, Richardson PT, Allaway D, Collins MD, Roberts TA, Thompson DE: Sequence of the gene encoding type F neurotoxin of Clostridium botulinum. FEMS Microbiol Lett. 1992 Sep 15;75(2-3):225-30. [Article]
- East AK, Collins MD: Conserved structure of genes encoding components of botulinum neurotoxin complex M and the sequence of the gene coding for the nontoxic component in nonproteolytic Clostridium botulinum type F. Curr Microbiol. 1994 Aug;29(2):69-77. [Article]
- Campbell KD, Collins MD, East AK: Gene probes for identification of the botulinal neurotoxin gene and specific identification of neurotoxin types B, E, and F. J Clin Microbiol. 1993 Sep;31(9):2255-62. [Article]
- Yamasaki S, Baumeister A, Binz T, Blasi J, Link E, Cornille F, Roques B, Fykse EM, Sudhof TC, Jahn R, et al.: Cleavage of members of the synaptobrevin/VAMP family by types D and F botulinal neurotoxins and tetanus toxin. J Biol Chem. 1994 Apr 29;269(17):12764-72. [Article]
Associated Data
- Bio-Entities
Bio-Entity Type Botulinum neurotoxin type F (Clostridium botulinum) protein primary- Drug Relations
Drug Drug group Pharmacological action? Type Actions Details Equine Botulinum Neurotoxin F Immune FAB2 approved, experimental, investigational yes target antibody Details