Vipera anatolica
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ABSTRACT:
PROVIDER: PRJNA560445 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Vipera kaznakovi venom gland raw sequence reads
| PRJNA505487 | ENA
Project description:Vipera aspis venom gland transcriptome: raw sequence reads and VTBuilder assembly
| PRJNA594707 | ENA
Project description:The nose-horned viper, its nominotypical subspecies Vipera ammodytes ammodytes (Vaa) in particular is, medically, the most relevant snake in Europe. The local and systemic clinical manifestations of poisoning by the venom of this snake are the result of the pathophysiological effects inflicted by enzymatic and non-enzymatic venom components acting, most prominently, on blood, cardiovascular and nerve systems. This venom comprises the most complex mixture of pharmacologically active proteins and peptides of all European snakes. To help improve the current antivenom therapy towards higher specificity and efficiency, and to assist drug discovery, we have constructed, by combining transcriptomic and proteomic analyses, the most comprehensive library yet of the Vaa venom proteins and peptides. At the protein level, 57 venom proteins belonging to 16 different protein families have been identified and, with SVSPs, sPLA2s, snaclecs and SVMPs, comprise about 80% of all venom proteins.
2019-05-06 | PXD012752 | Pride
Project description:Snake venom is a rich source of peptides and proteins with a wide range of actions. Many of the components of the venom are currently being tested for their usefulness in the treatment of many diseases ranging from neurological and cardiovascular to cancer. It is also important to constantly search for new proteins and peptides with properties not yet described. The venom of Vipera berus berus has hemolytic, proteolytic and cytotoxic properties, but its exact composition and the factors responsible for these properties are not known. Therefore, an attempt was made to identify proteins and peptides derived from this species venom by using high resolution two-dimensional electrophoresis and MALDI ToF/ToF mass spectrometry. A total of 11 protein classes have been identified mainly proteases but also L-amino acid oxidases, C-type lectin like proteins, cysteine-rich venom proteins and phospholipases A2 and 5 peptides of molecular weight less than 1500 Da. Most of the identified proteins are responsible for the highly hemotoxic properties of the venom. Presence of venom phospholipases A2 and L- amino acid oxidases cause moderate neuro-, myo- and cytotoxicity. All successfully identified peptides belong to the bradikinin-potentiating peptides family.
2016-12-12 | PXD004958 | Pride
Project description:We report the venom proteome of Vipera anatolica senliki, a newly discovered subspecies of the Anatolian Meadow viper endemic to the Antalya Province in Turkey. Integrative venomics, including venom gland transcriptomics as well as complementary bottom-up and top-down proteomic analyses, were applied to fully characterize the venom of V. a. senliki. Additionally, we extend the top-down venomics approach to elucidate the venom proteome by an in-source decay-driven (ISD) workflow using the reducing matrix 1,5-diaminonaphthalene (DAN). Our venomic in-source decay protocol allowed disulfide bond mapping as well as an effective de novo identification of high molecular weight venom constituents, both of which are difficult to achieve by established top-down approaches. Venom gland transcriptome analysis identified 42 venom genes annotations relating to number 13 venom toxin families. Relative quantitative snake venomics revealed snake venom metalloproteinases (svMP, 42.9%) as most abundant protein family, followed by less abundant toxin families as cysteine-rich secretory proteins (CRISP, 9.9%), phospholipases A2 (PLA2, 8.2%), snake venom serine proteinases (svSP, 7.2%) and C-type lectin-like proteins(CTL, 4.6%) as well as disintegrins (DI, 1.9%), Kunitz-type serine protease inhibitor (KUN, 1.2%), L-amino acid oxidase (LAAO, 0.1%) and non-annotated (n/a, 0.5%) were identified. Furthermore, a high content of diverse peptides (23.5%), e.g. svMP-inhibitor (svMP-i, 5.9%) and bradykinin potentiating peptides (BPP; 0.6%) were found. Top-down venomics showed the presence of DI, KUN, and several PLA2 proteoforms that were also previously reported in the closely related subspecies V. anatolica anatolica.
2019-07-29 | MSV000084147 | MassIVE
Project description:Combined bottom-up and top-down venom proteomics of a local population of Vipera kaznakovi.
2018-08-23 | MSV000082845 | MassIVE
Project description:Background The generalist dipteran pupal parasitoid Nasonia vitripennis injects 79 venom peptides into the host before egg laying. This venom induces several important changes in the host, including developmental arrest, immunosuppression, and alterations to normal metabolism. It is hoped that diverse and potent bioactivities of N. vitripennis venom provide an opportunity for the design of novel acting drugs. However, currently very little is known about the individual functions of N. vitripennis venom peptides and less than half can be bioinformatically annotated. The paucity of annotation information complicates the design of studies that seek to better understand the potential mechanisms underlying the envenomation response. Although the RNA interference system of N. vitripennis provides an opportunity to functionally characterise venom encoding genes, with 79 candidates this represents a daunting task. For this reason we were interested in determining the expression levels of venom encoding genes in the venom gland, such that this information could be used to rank candidate venoms. To do this we carried out deep sequencing of the transcriptome of the venom gland and neighbouring ovary tissue and used RNA-seq to measure expression from the 79 venom encoding genes. The generation of a specific venom gland transcriptome dataset also provides further opportunities to investigate novel features of this highly specialised organ. Results High throughput sequencing and RNA-seq revealed that the highest expressed venom encoding gene in the venom gland was a serine protease called Nasvi2EG007167, which has previously been implicated in the apoptotic activity of N. vitripennis venom. As expected the RNA-seq confirmed that the N. vitripennis venom encoding genes are almost exclusively expressed in the venom gland relative to the neighbouring ovary tissue. Novel peptides appear to perform key roles in N. vitripennis venom function as only four of the highest 15 expressed venom encoding genes are bioinformatically annotationed. The high throughput sequencing data also provided evidence for the existence of an additional 471 novel genes in the Nasonia genome that are expressed in the venom gland and ovary. Finally, metagenomic analysis of venom gland transcripts identified viral transcripts that may play an important part in the N. vitripennis venom function. Conclusions The expression level information provided here for the 79 venom encoding genes provides an unbiased dataset that can be used by the N. vitripennis community to identify high value candidates for further functional characterisation. These candidates represent bioactive peptides that have value in drug development pipelines.
2016-12-31 | GSE76257 | GEO
Project description:Both single cell and bulk RNA sequencing was performed on expanding or differentiating snake venom gland organoids (from Aspidelaps Lubricus Cowlesi and Naja Nivea), or tissue (Aspidelaps Lubricus Cowlesi). Bulk RNA sequencing from the snake venom gland, liver and pancreas was performed to construct a de novo transcriptome using Trinity.
2020-02-24 | GSE129581 | GEO