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MSD1_AMARI
ID   MSD1_AMARI              Reviewed;          35 AA.
AC   A0A023IWM6;
DT   28-MAR-2018, integrated into UniProtKB/Swiss-Prot.
DT   09-JUL-2014, sequence version 1.
DT   25-MAY-2022, entry version 12.
DE   RecName: Full=MSDIN-like toxin proprotein 1 {ECO:0000303|PubMed:24613547};
DE   Contains:
DE     RecName: Full=Toxin MSD1 {ECO:0000305|PubMed:24613547};
DE   Flags: Precursor;
OS   Amanita rimosa.
OC   Eukaryota; Fungi; Dikarya; Basidiomycota; Agaricomycotina; Agaricomycetes;
OC   Agaricomycetidae; Agaricales; Amanitaceae; Amanita.
OX   NCBI_TaxID=580330;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA], AND FUNCTION.
RX   PubMed=24613547; DOI=10.1016/j.toxicon.2014.02.020;
RA   Li P., Deng W., Li T.;
RT   "The molecular diversity of toxin gene families in lethal Amanita
RT   mushrooms.";
RL   Toxicon 83:59-68(2014).
CC   -!- FUNCTION: Probable toxin that belongs to the MSDIN-like toxin family
CC       responsible for a large number of food poisoning cases and deaths
CC       (PubMed:24613547). {ECO:0000305|PubMed:24613547}.
CC   -!- PTM: Processed by the macrocyclase-peptidase enzyme POPB to yield a
CC       toxic cyclic decapeptide (By similarity). POPB first removes 10
CC       residues from the N-terminus (By similarity). Conformational trapping
CC       of the remaining peptide forces the enzyme to release this intermediate
CC       rather than proceed to macrocyclization (By similarity). The enzyme
CC       rebinds the remaining peptide in a different conformation and catalyzes
CC       macrocyclization of the N-terminal 10 residues (By similarity).
CC       {ECO:0000250|UniProtKB:A0A067SLB9}.
CC   -!- SIMILARITY: Belongs to the MSDIN fungal toxin family. {ECO:0000305}.
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DR   EMBL; KF552087; AHB18715.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A023IWM6; -.
DR   GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR   InterPro; IPR027582; Amanitin/phalloidin.
DR   TIGRFAMs; TIGR04309; amanitin; 1.
PE   3: Inferred from homology;
KW   Toxin.
FT   PROPEP          1..10
FT                   /evidence="ECO:0000305|PubMed:24613547"
FT                   /id="PRO_0000443707"
FT   PEPTIDE         11..20
FT                   /note="Toxin MSD1"
FT                   /evidence="ECO:0000305|PubMed:24613547"
FT                   /id="PRO_0000443708"
FT   PROPEP          21..35
FT                   /evidence="ECO:0000305|PubMed:24613547"
FT                   /id="PRO_0000443709"
FT   CROSSLNK        11..20
FT                   /note="Cyclopeptide (Ile-Pro)"
FT                   /evidence="ECO:0000305|PubMed:24613547"
SQ   SEQUENCE   35 AA;  3880 MW;  E5A6BA2D4EAC3212 CRC64;
     MSDINATRLP IIIVLGLIIP LCVSDIEMIL TRGER
 
 
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