A giant virus, sometimes referred to as a girus, is a very large virus, some of which are larger than typical bacteria. [1] [2] All known giant viruses belong to the phylum Nucleocytoviricota. [3]

以巨病毒(giant virus, girus)（包括拟菌病毒、马赛病毒等）和痘病毒(poxvirus)（包括天花病毒、 猴痘病毒 等）为代表的核质大DNA病毒(nucleocytoplasmic large DNA virus, NCLDV)，从形态、结构和生物学上都构成了一组与疱疹病毒和有尾 噬菌体 完全不同的dsDNA病毒。

直径很大的病毒，甚至可以比典型的细菌要大。属于核质大DNA病毒(nucleocytoplasmic large DNA viruses, NCLDVs)，与其他病毒相比，它们的基因组非常大，并且含有许多在其他生命形式中没有发现的独特基因。潘多拉病毒、西伯利亚阔口罐病毒等都属于巨大病毒。

2020年10月5日 · Giant viruses are called ‘giant’ because they violate the property of ‘filterability’, which has classically been used to separate viruses from other microbes, ever since the isolation of the tobacco mosaic disease virus in 1892. The diverse families of giant viruses known today (pending others) were most likely overlooked because of ...

2022年7月28日 · We discuss how metagenomics has revolutionized our perspective of giant viruses by revealing their distribution across our planet’s biomes, where they impact the biology and ecology of a wide range...

2022年5月18日 · Giant viruses are a part of a group of nucleocytoplasmic large DNA viruses (NCLVD) whose viral particle magnitude, structure, genome length, and complexity are larger than the standard virus ...

2020年1月28日 · 巨型病毒（giant virus）的基因组大约是常见病毒的基因组大小的100倍，而大型病毒（large virus）的基因组可能仅大10倍。 然而，尽管可到处发现病毒，但是对它们的了解相对较少，更不用说是大型病毒和巨型病毒了。 在一项新的研究中，来自美国能源部联合基因组研究所（Joint Genome Institute, JGI）等研究机构的研究人员发现了属于核质大DNA病毒（nucleocytoplasmic large DNA virus, NCLDV）超组（supergroup）的大型病毒和巨型病毒的 …

Here, we provide an updated quantitative and qualitative view on giant viruses and elaborate on their shared and variable features. We review the complexity of giant viral proteomes, which include functions traditionally associated only with cellular organisms.

Until the discovery of pandoraviruses in 2013, it had the largest capsid diameter of all known viruses, as well as the largest and most complex genome among all known viruses. [4]

2024年5月30日 · There are actually two different candidates for largest virus in the world, depending on how we define “giant!” The most straightforward definition is physical size. Most viruses are 20-400 nanometers in diameter [1]. The physically largest virus is Pithovirus sibericum, at 1.5 microns (or 1,500 nanometers) in length [2].