Prokaryotic viperins 产生各种抗病毒分子
在PubMed上查看摘要
概括
此摘要是机器生成的。这是一种抗病毒蛋白, 源自细菌和古生物. 它产生抑制病毒复制的改性核酸, 揭示了细菌免疫系统中的自然化合物.
科学领域
- 生物化学
- 病毒学
- 微生物学
背景情况
- 维佩林是一种干扰素诱导的蛋白质,在动物中保存.
- 它通过产生3'- deoxy-3',4'- didehydro- cytidine triphosphate (ddhCTP) 来抑制病毒复制,这是病毒RNA聚合酶的链终结体.
研究的目的
- 为了研究真核毒蛇的进化起源.
- 描述 prokaryotic viperins 的抗病毒机制
主要方法
- 为了追踪毒蛇的进化起源,
- 生物化学试验,以确定由原生物毒蛇产生的改性核酸.
- 在体外实验中评估 prokaryotic viperins 对T7菌体的抗病毒活性.
主要成果
- 欧核生物毒蛇是由参与菌体防御的细菌和古生物蛋白质组成的.
- Prokaryotic viperins 生产了一系列修饰的核酸,包括ddhCTP,ddh-guanosine三酸 (ddhGTP) 和ddh-uridine三酸 (ddhUTP).
- 通过干扰病毒聚合酶依赖转录来抑制T7菌体感染.
结论
- 维佩林在原生生物的抗病毒防御系统中具有古老的起源.
- Prokaryotic viperins 与其真核生物对应物具有相似的抗病毒机制.
- 这些发现突出了来自细菌免疫系统的潜在天然抗病毒化合物.
相关概念视频
Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats is a adaptive immune system found in bacteria and archaea that protects against viral infections. This system enables prokaryotic cells to identify, remember, and neutralize foreign genetic elements, primarily bacteriophages, by storing fragments of the invader’s DNA as a genetic memory.The CRISPR immune response begins during an initial infection. Cas (CRISPR-associated) proteins play a central role in this...
Viruses are extraordinarily diverse in shape and size, but they all have several structural features in common. All viruses have a core that contains a DNA- or RNA-based genome. The core is surrounded by a protective coat of proteins called the capsid. The capsid is composed of subunits called capsomeres. The capsid and genome-containing core are together known as the nucleocapsid.
Structural Classes of Viruses
Many criteria are used to classify viruses, including capsid design. Most viruses...
Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
Archaeal viruses play a crucial role in the ecosystems of extremophilic archaea, particularly those belonging to the phyla Euryarchaeota and Crenarchaeota. By shaping host evolution and facilitating gene transfer, these viruses influence microbial communities and contribute to genetic diversity in extreme environments. The archaea they infect thrive in acidic hot springs and hydrothermal vents characterized by high temperatures and low pH. Archaeal viruses exhibit remarkable structural...
Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
Interferons
Interferons (IFNs) are proteins produced by lymphocytes, macrophages, and fibroblasts infected with viruses. While IFNs cannot prevent viruses from entering and...

