Unveiling Novel Kunitz- and Waprin-Type Toxins in the Micrurus mipartitus Coral Snake Venom Gland: An In Silico Transcriptome Analysis
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Fecha
2024-06
Profesor/a Guía
Facultad/escuela
Idioma
en
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Editor
Multidisciplinary Digital Publishing Institute (MDPI)
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Licencia CC
CC BY 4.0 ATTRIBUTION 4.0 INTERNATIONAL
Licencia CC
https://creativecommons.org/licenses/by/4.0/
Resumen
Kunitz-type peptide expression has been described in the venom of snakes of the Viperidae, Elapidae and Colubridae families. This work aimed to identify these peptides in the venom gland transcriptome of the coral snake Micrurus mipartitus. Transcriptomic analysis revealed a high diversity of venom-associated Kunitz serine protease inhibitor proteins (KSPIs). A total of eight copies of KSPIs were predicted and grouped into four distinctive types, including short KSPI, long KSPI, Kunitz–Waprin (Ku-WAP) proteins, and a multi-domain Kunitz-type protein. From these, one short KSPI showed high identity with Micrurus tener and Austrelaps superbus. The long KSPI group exhibited similarity within the Micrurus genus and showed homology with various elapid snakes and even with the colubrid Pantherophis guttatus. A third group suggested the presence of Kunitz domains in addition to a whey-acidic-protein-type four-disulfide core domain. Finally, the fourth group corresponded to a transcript copy with a putative 511 amino acid protein, formerly annotated as KSPI, which UniProt classified as SPINT1. In conclusion, this study showed the diversity of Kunitz-type proteins expressed in the venom gland transcriptome of M. mipartitus.
Notas
Indexación: Scopus.
Palabras clave
KSPI, manual curations, Micrurus mipartitus, novel Kunitz-type inhibitor, venom gland transcriptome
Citación
Toxins Open Access Volume 16, Issue 5 May 2024 Article number 224
DOI
10.3390/toxins16050224