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Print of the destruction in the Church of Our Lady in Antwerp, the "signature event" of the Beeldenstorm, 20 August 1566, by Frans Hogenberg [1]. Beeldenstorm (pronounced [ˈbeːldə(n)ˌstɔr(ə)m]) in Dutch and Bildersturm [ˈbɪldɐˌʃtʊʁm] in German (roughly translatable from both languages as 'attack on the images or statues') are terms used for outbreaks of destruction of religious ...
The first act of Muslim iconoclasm dates to the beginning of Islam, in 630, when the various statues of Arabian deities housed in the Kaaba in Mecca were destroyed. There is a tradition that Muhammad spared a fresco of Mary and Jesus. [56] This act was intended to bring an end to the idolatry which, in the Muslim view, characterized Jahiliyyah.
Photosynthetic reaction centre proteins are main protein components of photosynthetic reaction centres (RCs) of bacteria and plants. They are transmembrane proteins embedded in the chloroplast thylakoid or bacterial cell membrane. Plants, algae, and cyanobacteria have one type of PRC for each of its two photosystems.
Photo 51 is an X-ray based fiber diffraction image of a paracrystalline gel composed of DNA fiber [1] taken by Raymond Gosling, [2] [3] a postgraduate student working under the supervision of Maurice Wilkins and Rosalind Franklin at King's College London, while working in Sir John Randall's group.
1889: Richard Altmann purified protein free DNA. However, the nucleic acid was not as pure as he had assumed. It was determined later to contain a large amount of protein. 1889: Hugo de Vries postulates that "inheritance of specific traits in organisms comes in particles", naming such particles "(pan)genes". [2]
The First Iconoclasm, [1] as it is sometimes called, occurred between about 726 and 787, while the Second Iconoclasm occurred between 814 and 842. [2] According to the traditional view, Byzantine Iconoclasm was started by a ban on religious images promulgated by the Byzantine Emperor Leo III the Isaurian , [ 3 ] and continued under his ...
Its genetic material was most likely DNA, [15] so that it lived after the RNA world. [a] [18] The DNA was kept double-stranded by an enzyme, DNA polymerase, which recognises the structure and directionality of DNA. [19] The integrity of the DNA was maintained by a group of repair enzymes including DNA topoisomerase. [20]
RecBCD is a model enzyme for the use of single molecule fluorescence as an experimental technique used to better understand the function of protein-DNA interactions. [23] The enzyme is also useful in removing linear DNA, either single- or double-stranded, from preparations of circular double-stranded DNA, since it requires a DNA end for activity.