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The Xenotext
''The Xenotext'' is an ongoing work of BioArt by experimental Canadian poet Christian Bök. The primary goal of the project is twofold: first, a poem, encoded as a strand of DNA, is implanted into the bacterium ''Deinococcus radiodurans''; second, the bacterium reads this strand of DNA and produces a protein which is also an intelligible poem. Bök himself describes the project as "a literary exercise that explores the aesthetic potential of genetics in the modern milieu". By using the extremophile ''D. radiodurans'' as a host for this work, the ambition is that the two poems may even outlive human civilization. Inspiration Bök cites three main sources of inspiration for ''The Xenotext''. The first is a project by Pak Chung Wong (a scientist at the Pacific Northwest National Library), in which he and his team enciphered the lyrics to "It's A Small World After All" as a plasmid of DNA and successfully implanted it in ''Deinococcus radiodurans''. Wong's goal was to demonstrate the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BioArt
BioArt is an art practice where artists work with biology, live tissues, bacteria, living organisms, and life processes. Using scientific processes and practices such as biology and life science practices, microscopy, and biotechnology (including technologies such as genetic engineering, tissue culture, and cloning) the artworks are produced in laboratories, galleries, or artists' studios. The scope of BioArt is a range considered by some artists to be strictly limited to "living forms", while other artists include art that uses the imagery of contemporary medicine and biological research, or require that it address a controversy or blind spot posed by the very character of the life sciences. Bioart originated at the end of the 20th century and beginning of the 21st century. Although BioArtists work with living matter, there is some debate as to the stages at which matter can be considered to be alive or living. Creating living beings and practicing in the life sciences brings abo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nucleotide
Nucleotides are organic molecules consisting of a nucleoside and a phosphate. They serve as monomeric units of the nucleic acid polymers – deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are essential biomolecules within all life-forms on Earth. Nucleotides are obtained in the diet and are also synthesized from common nutrients by the liver. Nucleotides are composed of three subunit molecules: a nucleobase, a five-carbon sugar (ribose or deoxyribose), and a phosphate group consisting of one to three phosphates. The four nucleobases in DNA are guanine, adenine, cytosine and thymine; in RNA, uracil is used in place of thymine. Nucleotides also play a central role in metabolism at a fundamental, cellular level. They provide chemical energy—in the form of the nucleoside triphosphates, adenosine triphosphate (ATP), guanosine triphosphate (GTP), cytidine triphosphate (CTP) and uridine triphosphate (UTP)—throughout the cell for the many cellular func ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pastoral
A pastoral lifestyle is that of shepherds herding livestock around open areas of land according to seasons and the changing availability of water and pasture. It lends its name to a genre of literature, art, and music (pastorale) that depicts such life in an idealized manner, typically for urban audiences. A ''pastoral'' is a work of this genre, also known as bucolic, from the Greek , from , meaning a cowherd. Literature Pastoral literature in general Pastoral is a mode of literature in which the author employs various techniques to place the complex life into a simple one. Paul Alpers distinguishes pastoral as a mode rather than a genre, and he bases this distinction on the recurring attitude of power; that is to say that pastoral literature holds a humble perspective toward nature. Thus, pastoral as a mode occurs in many types of literature (poetry, drama, etc.) as well as genres (most notably the pastoral elegy). Terry Gifford, a prominent literary theorist, define ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elegiac
The adjective ''elegiac'' has two possible meanings. First, it can refer to something of, relating to, or involving, an elegy or something that expresses similar mournfulness or sorrow. Second, it can refer more specifically to poetry composed in the form of elegiac couplets. An elegiac couplet consists of one line of poetry in dactylic hexameter followed by a line in dactylic pentameter. Because dactylic hexameter is used throughout epic poetry, and because the elegiac form was always considered "lower style" than epic, elegists, or poets who wrote elegies, frequently wrote with epic poetry in mind and positioned themselves in relation to epic. Classical poets The first examples of elegiac poetry in writing come from classical Greece. The form dates back nearly as early as epic, with such authors as Archilocus and Simonides of Ceos from early in the history of Greece. The first great elegiac poet of the Hellenistic period was Philitas of Cos: Augustan poets identified his name ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petrarchan Sonnet
The Petrarchan sonnet, also known as the Italian sonnet, is a sonnet named after the Italian poet Francesco Petrarca, although it was not developed by Petrarch himself, but rather by a string of Renaissance poets.Spiller, Michael R. G. The Development of the Sonnet: An Introduction. London: Routledge, 1992. 5 Dec. 2015. Because of the structure of Italian, the rhyme scheme of the Petrarchan sonnet is more easily fulfilled in that language than in English. The original Italian sonnet form consists of a total of fourteen hendecasyllabic lines (in English sonnets, iambic pentameter is used) in two parts, the first part being an octave and the second being a sestet. Form The rhyme scheme for the octave is typically ABBAABBA. The sestet is more flexible. Petrarch typically used CDECDE or CDCDCD for the sestet. Some other possibilities for the sestet include CDDCDD, CDDECE, or CDDCCD (as in Wordsworth's "Nuns Fret Not at Their Convent's Narrow Room," a sonnet about sonnets). This form was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonnet
A sonnet is a poetic form that originated in the poetry composed at the Court of the Holy Roman Emperor Frederick II in the Sicilian city of Palermo. The 13th-century poet and notary Giacomo da Lentini is credited with the sonnet's invention, and the Sicilian School of poets who surrounded him then spread the form to the mainland. The earliest sonnets, however, no longer survive in the original Sicilian language, but only after being translated into Tuscan dialect. The term "sonnet" is derived from the Italian word ''sonetto'' (lit. "little song", derived from the Latin word ''sonus'', meaning a sound). By the 13th century it signified a poem of fourteen lines that followed a strict rhyme scheme and structure. According to Christopher Blum, during the Renaissance, the sonnet became the "choice mode of expressing romantic love". During that period, too, the form was taken up in many other European language areas and eventually any subject was considered acceptable for writers o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orpheus And Eurydice
The ancient legend of Orpheus and Eurydice (, ''Orpheus, Eurydikē'') concerns the fateful love of Orpheus of Thrace for the beautiful Eurydice. Orpheus was the son of Apollo and the muse Calliope. It may be a late addition to the Orpheus myths, as the latter cult-title suggests those attached to Persephone. It may have been derived from a legend in which Orpheus travels to Tartarus and charms the goddess Hecate. The subject is among the most frequently retold of all Greek myths, being featured in numerous works of literature, operas, ballets, paintings, plays and more recently, films and video games. Versions In Virgil's classic version of the legend, it completes his ''Georgics'', a poem on the subject of agriculture. Here the name of Aristaeus, or Aristaios, the keeper of bees, and the tragic conclusion was first introduced. Ovid's version of the myth, in his ''Metamorphoses'', was published a few decades later and employs a different poetic emphasis and purpose. It relate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perl
Perl is a family of two high-level, general-purpose, interpreted, dynamic programming languages. "Perl" refers to Perl 5, but from 2000 to 2019 it also referred to its redesigned "sister language", Perl 6, before the latter's name was officially changed to Raku in October 2019. Though Perl is not officially an acronym, there are various backronyms in use, including "Practical Extraction and Reporting Language". Perl was developed by Larry Wall in 1987 as a general-purpose Unix scripting language to make report processing easier. Since then, it has undergone many changes and revisions. Raku, which began as a redesign of Perl 5 in 2000, eventually evolved into a separate language. Both languages continue to be developed independently by different development teams and liberally borrow ideas from each other. The Perl languages borrow features from other programming languages including C, sh, AWK, and sed; They provide text processing facilities without the arbitrary data-le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNA And RNA Codon Tables
A codon table can be used to translate a genetic code into a sequence of amino acids. The standard genetic code is traditionally represented as an RNA codon table, because when proteins are made in a cell by ribosomes, it is messenger RNA (mRNA) that directs protein synthesis. The mRNA sequence is determined by the sequence of genomic DNA. In this context, the standard genetic code is referred to as translation table 1. It can also be represented in a DNA codon table. The DNA codons in such tables occur on the sense DNA strand and are arranged in a 5′-to-3′ direction. Different tables with alternate codons are used depending on the source of the genetic code, such as from a cell nucleus, mitochondrion, plastid, or hydrogenosome. There are 64 different codons in the genetic code and the below tables; most specify an amino acid. Three sequences, UAG, UGA, and UAA, known as stop codons, do not code for an amino acid but instead signal the release of the nascent polypeptide from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Substitution Cipher
In cryptography, a substitution cipher is a method of encrypting in which units of plaintext are replaced with the ciphertext, in a defined manner, with the help of a key; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth. The receiver deciphers the text by performing the inverse substitution process to extract the original message. Substitution ciphers can be compared with transposition ciphers. In a transposition cipher, the units of the plaintext are rearranged in a different and usually quite complex order, but the units themselves are left unchanged. By contrast, in a substitution cipher, the units of the plaintext are retained in the same sequence in the ciphertext, but the units themselves are altered. There are a number of different types of substitution cipher. If the cipher operates on single letters, it is termed a simple substitution cipher; a cipher that operates on larger groups of letters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Translation (biology)
In molecular biology and genetics, translation is the process in which ribosomes in the cytoplasm or endoplasmic reticulum synthesize proteins after the process of transcription (biology), transcription of DNA to RNA in the cell's nucleus (cell), nucleus. The entire process is called gene expression. In translation, mRNA, messenger RNA (mRNA) is decoded in a ribosome, outside the nucleus, to produce a specific amino acid chain, or polypeptide. The polypeptide later protein folding, folds into an Activation energy, active protein and performs its functions in the Cell (biology), cell. The ribosome facilitates decoding by inducing the binding of Base pair, complementary tRNA anticodon sequences to mRNA codons. The tRNAs carry specific amino acids that are chained together into a polypeptide as the mRNA passes through and is "read" by the ribosome. Translation proceeds in three phases: # Initiation: The ribosome assembles around the target mRNA. The first tRNA is attached a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transcription (biology)
Transcription is the process of copying a segment of DNA into RNA. The segments of DNA transcribed into RNA molecules that can encode proteins are said to produce messenger RNA (mRNA). Other segments of DNA are copied into RNA molecules called non-coding RNAs (ncRNAs). mRNA comprises only 1–3% of total RNA samples. Less than 2% of the human genome can be transcribed into mRNA ( Human genome#Coding vs. noncoding DNA), while at least 80% of mammalian genomic DNA can be actively transcribed (in one or more types of cells), with the majority of this 80% considered to be ncRNA. Both DNA and RNA are nucleic acids, which use base pairs of nucleotides as a complementary language. During transcription, a DNA sequence is read by an RNA polymerase, which produces a complementary, antiparallel RNA strand called a primary transcript. Transcription proceeds in the following general steps: # RNA polymerase, together with one or more general transcription factors, binds to promoter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
