ID   XT4_XENTR               Reviewed;          22 AA.
AC   P84384;
DT   15-FEB-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-FEB-2005, sequence version 1.
DT   03-AUG-2022, entry version 35.
DE   RecName: Full=Antimicrobial peptide 4;
DE   AltName: Full=XT-4;
OS   Xenopus tropicalis (Western clawed frog) (Silurana tropicalis).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Amphibia;
OC   Batrachia; Anura; Pipoidea; Pipidae; Xenopodinae; Xenopus; Silurana.
OX   NCBI_TaxID=8364;
RN   [1] {ECO:0000305}
RP   PROTEIN SEQUENCE, FUNCTION, SUBCELLULAR LOCATION, TISSUE SPECIFICITY, AND
RP   MASS SPECTROMETRY.
RC   TISSUE=Skin secretion {ECO:0000269|PubMed:11738090};
RX   PubMed=11738090; DOI=10.1016/s0167-4838(01)00272-2;
RA   Ali M.F., Soto A., Knoop F.C., Conlon J.M.;
RT   "Antimicrobial peptides isolated from skin secretions of the diploid frog,
RT   Xenopus tropicalis (Pipidae).";
RL   Biochim. Biophys. Acta 1550:81-89(2001).
CC   -!- FUNCTION: Has very strong antimicrobial activity against Gram-positive
CC       bacterium S.aureus and yeast C.albicans, and very weak activity against
CC       Gram-negative bacterium E.coli. Has strong hemolytic activity against
CC       human red blood cells. {ECO:0000269|PubMed:11738090}.
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000269|PubMed:11738090}.
CC   -!- TISSUE SPECIFICITY: Expressed by the skin glands.
CC       {ECO:0000269|PubMed:11738090}.
CC   -!- MASS SPECTROMETRY: Mass=2319.0; Mass_error=0.5; Method=Electrospray;
CC       Evidence={ECO:0000269|PubMed:11738090};
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DR   AlphaFoldDB; P84384; -.
DR   Proteomes; UP000008143; Genome assembly.
DR   Proteomes; UP000790000; Unplaced.
DR   GO; GO:0005576; C:extracellular region; IDA:UniProtKB.
DR   GO; GO:0050832; P:defense response to fungus; IDA:UniProtKB.
DR   GO; GO:0050829; P:defense response to Gram-negative bacterium; IDA:UniProtKB.
DR   GO; GO:0050830; P:defense response to Gram-positive bacterium; IDA:UniProtKB.
DR   GO; GO:0044179; P:hemolysis in another organism; IDA:UniProtKB.
PE   1: Evidence at protein level;
KW   Amphibian defense peptide; Antibiotic; Antimicrobial; Cytolysis;
KW   Direct protein sequencing; Fungicide; Hemolysis; Reference proteome;
KW   Secreted.
FT   PEPTIDE         1..22
FT                   /note="Antimicrobial peptide 4"
FT                   /id="PRO_0000043867"
SQ   SEQUENCE   22 AA;  2319 MW;  90DD196849A8D7EF CRC64;
     GVFLDALKKF AKGGMNAVLN PK