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favicon.ico: en.wikipedia.org/wiki/DNA - DNA - Wikipedia.

site address: en.wikipedia.org/wiki/DNA

site title: DNA - Wikipedia

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dna, and, modifications, packaging, proteins, genetic, history, bases, base, alternative, structures, enzymes, contents, properties, chemical, altered, biological, functions, interactions, with, recombination, evolution, uses, in, technology, see, also, references, further, reading, external, links, nucleobase, classification, non, canonical, grooves, pairing, amount, sense, antisense, supercoiling, chemistry, quadruplex, branched, artificial, acidity, macroscopic, appearance, damage, genomes, transcription, translation, replication, extracellular, nucleic, acids, binding, modifying, engineering, profiling, or, catalytic, bioinformatics, nanotechnology, anthropology, information, storage, ssdna, vs, dsdna, nucleases, ligases, topoisomerases, helicases, polymerases,

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ecological genetics to anthropology information storage main article dna digital data storage dna as a storage device for information has enormous potential since it has much higher storage density compared to electronic devices however high costs slow read and write times memory latency and insufficient reliability has prevented its practical use 178 179 history further information history of molecular biology maclyn mccarty left shakes hands with francis crick and james watson co originators of the double helix model based on the x ray diffraction data and insights of rosalind franklin and raymond gosling dna was first isolated by the swiss physician friedrich miescher who in 1869 discovered a microscopic substance in the pus of discarded surgical bandages as it resided in the nuclei of cells he called it nuclein 180 181 in 1878 albrecht kossel isolated the non protein component of nuclein nucleic acid and later isolated its five primary nucleobases 182 183 in 1909 phoebus levene identified the base sugar and phosphate nucleotide unit of rna then named yeast nucleic acid 184 185 186 in 1929 levene identified deoxyribose sugar in thymus nucleic acid dna 187 levene suggested that dna consisted of a string of four nucleotide units linked together through the phosphate groups tetranucleotide hypothesis levene thought the chain was short and the bases repeated in a fixed order in 1927 nikolai koltsov proposed that inherited traits would be inherited via a giant hereditary molecule made up of two mirror strands that would replicate in a semi conservative fashion using each strand as a template 188 189 in 1928 frederick griffith in his experiment discovered that traits of the smooth form of pneumococcus could be transferred to the rough form of the same bacteria by mixing killed smooth bacteria with the live rough form 190 191 this system provided the first clear suggestion that dna carries genetic information in 1933 while studying virgin sea urchin eggs jean brachet suggested that dna is found in the cell nucleus and that rna is present exclusively in the cytoplasm at the time yeast nucleic acid rna was thought to occur only in plants while thymus nucleic acid dna only in animals the latter was thought to be a tetramer with the function of buffering cellular ph 192 193 in 1937 william astbury produced the first x ray diffraction patterns that showed that dna had a regular structure 194 in 1943 oswald avery along with co workers colin macleod and maclyn mccarty identified dna as the transforming principle supporting griffith s suggestion avery macleod mccarty experiment 195 erwin chargaff developed and published observations now known as chargaff s rules stating that in dna from any species of any organism the amount of guanine should be equal to cytosine and the amount of adenine should be equal to thymine 196 197 a blue plaque outside the eagle pub in cambridge england commemorating crick and watson by 1951 alec todd and collaborators at the university of cambridge had determined by biochemical methods how the backbone of dna is structured via the successive linking of carbon atoms 3 and 5 of the sugar to phosphates this would help to corroborate watson and crick s later x ray structural work 198 todd would later be awarded the 1957 nobel prize in chemistry for this and other discoveries related to dna 199 late in 1951 francis crick started working with james watson at the cavendish laboratory within the university of cambridge dna s role in heredity was confirmed in 1952 when alfred hershey and martha chase in the hershey chase experiment showed that dna is the genetic material of the enterobacteria phage t2 200 photo 51 showing x ray diffraction pattern of dna in may 1952 raymond gosling a graduate student working under the supervision of rosalind franklin took an x ray diffraction image labeled as photo 51 201 at high hydration levels of dna this photo was given to watson and crick by maurice wilkins and was critical to their obtaining the correct structure of dna franklin told crick and watson that the backbones had to be on the outside before then linus pauling and watson and crick had erroneous models with the chains inside and the bases pointing outwards franklin s identification of the space group for dna crystals proved her correct 202 in february 1953 linus pauling and robert corey proposed a model for nucleic acids containing three intertwined chains with the phosphates near the axis and the bases on the outside 203 watson and crick completed their model which is now accepted as the first correct model of the double helix of dna on 28 february 1953 crick interrupted patrons lunchtime at the eagle pub in cambridge england to announce that he and watson had discovered the secret of life 204 pencil sketch of the dna double helix by francis crick in 1953 the 25 april 1953 issue of the journal nature published a series of five articles giving the watson and crick double helix structure dna and evidence supporting it 205 the structure was reported in a letter in which they stated it has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material 8 this letter was followed by a letter from franklin and gosling which was the first publication of their own x ray diffraction data and of their original analysis method 48 206 then followed a letter by wilkins and two of his colleagues which contained an analysis of in vivo b dna x ray patterns and which supported the presence in vivo of the watson and crick structure 49 in april 2023 scientists based on new evidence concluded that rosalind franklin was a contributor and equal player in the discovery process of dna rather than otherwise as may have been presented subsequently after the time of the discovery 207 208 209 in 1962 after franklin s death watson crick and wilkins jointly received the nobel prize in physiology or medicine 210 nobel prizes are awarded only to living recipients a debate continues about who should receive credit for the discovery 211 in an influential presentation in 1957 crick laid out the central dogma of molecular biology which foretold the relationship between dna rna and proteins and articulated the adaptor hypothesis 212 final confirmation of the replication mechanism that was implied by the double helical structure followed in 1958 through the meselson stahl experiment 213 further work by crick and co workers showed that the genetic code was based on non overlapping triplets of bases called codons allowing har gobind khorana robert w holley and marshall warren nirenberg to decipher the genetic code 214 these findings represent the birth of molecular biology 215 in 1986 dna analysis was first used in a criminal investigation when police in the uk requested alec jeffreys of the university of leicester to prove or disprove the involvement in a particular case of a suspect who claimed innocence in the matter although the suspect had already confessed to committing a recent rape murder he was denying any involvement in a similar crime committed three years earlier yet the details of the two cases were so alike that the police concluded both crimes had been committed by the same person however all charges against the suspect were dropped when jeffreys dna testing exonerated the suspect from both the earlier murder and the one to which he d confessed further such dna profiling led to positive identification of another suspect colin pitchfork who in 1988 was found guilty of both rape murders 216 217 see also autosome any chromosome other than a sex chromosome crystallography scientific study of crystal structures dna day holiday celebrated on april 25 dna microarray collection of microscopic dna spots attached to a solid surface dna sequencing process of determining the nucleic acid sequence environmental dna dna sampled from the environment rather than directly from an individual organism genetic code rules by which information encoded within genetic material is translated into proteins genetic disorder health problem from genome abnormalities genetic genealogy dna testing to infer relationships haplotype group of genes from one parent meiosis cell division producing haploid gametes nucleic acid notation universal notation of dna nucleotides nucleic acid sequence succession of nucleotides in a nucleic acid proteopedia forms_of_dna dna replication biological process pages displaying short descriptions of redirect targets ribosomal dna genes coding for ribosomal rna southern blot dna analysis technique transcription biology process of copying a segment of dna into rna x ray scattering techniques family of analytical techniques xeno nucleic acid synthetic nucleic acid analogues references deoxyribonucleic acid merriam webster com dictionary merriam webster oclc 1032680871 d iː ˈ ɒ k s ɪ ˌ r aɪ b oʊ nj uː ˌ k l iː ɪ k ˌ k l eɪ alberts b johnson a lewis j raff m roberts k walter p 2014 molecular biology of the cell 6th ed garland p chapter 4 dna chromosomes and genomes isbn 978 0 8153 4432 2 archived from the original on 14 july 2014 purcell a dna basic biology archived from the original on 5 january 2017 uracil genome gov archived from the original on 19 october 2019 retrieved 21 november 2019 russell p 2001 igenetics new york benjamin cummings isbn 0 8053 4553 1 saenger w 1984 principles of nucleic acid structure new york springer verlag isbn 0 387 90762 9 1 2 alberts b johnson a lewis j raff m roberts k peter w 2002 molecular biology of the cell fourth ed new york and london garland science isbn 0 8153 3218 1 oclc 145080076 archived from the original on 1 november 2016 1 2 3 4 watson jd crick fh april 1953 molecular structure of nucleic acids a structure for deoxyribose nucleic acid pdf nature 171 4356 737 38 bibcode 1953natur 171 737w doi 10 1038 171737a0 issn 0028 0836 pmid 13054692 s2cid 4253007 archived pdf from the original on 4 february 2007 1 2 3 4 berg j tymoczko j stryer l 2002 biochemistry w h freeman and company isbn 0 7167 4955 6 iupac iub commission on biochemical nomenclature cbn december 1970 abbreviations and symbols for nucleic acids polynucleotides and their constituents recommendations 1970 the biochemical journal 120 3 449 54 doi 10 1042 bj1200449 issn 0306 3283 pmc 1179624 pmid 5499957 archived from the original on 5 february 2007 irobalieva rn fogg jm catanese dj catanese dj sutthibutpong t chen m et al october 2015 structural diversity of supercoiled dna nature communications 6 1 8440 bibcode 2015natco 6 8440i doi 10 1038 ncomms9440 issn 2041 1723 pmc 4608029 pmid 26455586 mandelkern m elias jg eden d crothers dm october 1981 the dimensions of dna in solution journal of molecular biology 152 1 153 61 doi 10 1016 0022 2836 81 90099 1 issn 0022 2836 pmid 7338906 arrighi fe mandel m bergendahl j hsu tc june 1970 buoyant densities of dna of mammals biochemical genetics 4 3 367 376 doi 10 1007 bf00485753 issn 0006 2928 pmid 4991030 s2cid 27950750 1 2 ghosh a bansal m april 2003 a glossary of dna structures from a to z acta crystallographica section d 59 pt 4 620 26 bibcode 2003accrd 59 620g doi 10 1107 s0907444903003251 issn 0907 4449 pmid 12657780 edwards kj brown dg spink n skelly jv neidle s rcsb pdb 1d65 molecular structure of the b dna dodecamer d cgcaaatttgcg 2 an examination of propeller twist and minor groove water structure at 2 2 a resolution www rcsb org archived from the original on 26 march 2023 retrieved 27 march 2023 yakovchuk p protozanova e frank kamenetskii md 2006 base stacking and base pairing contributions into thermal stability of the dna double helix nucleic acids research 34 2 564 74 doi 10 1093 nar gkj454 issn 0305 1048 pmc 1360284 pmid 16449200 tropp be 2012 molecular biology 4th ed sudbury mass jones and barlett learning isbn 978 0 7637 8663 2 carr s 1953 watson crick structure of dna memorial university of newfoundland archived from the original on 19 july 2016 retrieved 13 july 2016 verma s eckstein f 1998 modified oligonucleotides synthesis and strategy for users annual review of biochemistry 67 99 134 doi 10 1146 annurev biochem 67 1 99 issn 0066 4154 pmid 9759484 johnson tb coghill rd 1925 pyrimidines ciii the discovery of 5 methylcytosine in tuberculinic acid the nucleic acid of the tubercle bacillus journal of the american chemical society 47 2838 44 doi 10 1021 ja01688a030 issn 0002 7863 weigele p raleigh ea october 2016 biosynthesis and function of modified bases in bacteria and their viruses chemical reviews 116 20 12655 12687 doi 10 1021 acs chemrev 6b00114 issn 0009 2665 pmid 27319741 kumar s chinnusamy v mohapatra t 2018 epigenetics of modified dna bases 5 methylcytosine and beyond frontiers in genetics 9 640 doi 10 3389 fgene 2018 00640 issn 1664 8021 pmc 6305559 pmid 30619465 carell t kurz mq müller m rossa m spada f april 2018 non canonical bases in the genome the regulatory information layer in dna angewandte chemie 57 16 4296 4312 bibcode 2018acie 57 4296c doi 10 1002 anie 201708228 pmid 28941008 wing r drew h takano t broka c tanaka s itakura k et al october 1980 crystal structure analysis of a complete turn of b dna nature 287 5784 755 58 bibcode 1980natur 287 755w doi 10 1038 287755a0 pmid 7432492 s2cid 4315465 1 2 pabo co sauer rt 1984 protein dna recognition annual review of biochemistry 53 1 293 321 bibcode 1984arbio 53 293p doi 10 1146 annurev bi 53 070184 001453 pmid 6236744 nikolova en zhou h gottardo fl alvey hs kimsey ij al hashimi hm 2013 a historical account of hoogsteen base pairs in duplex dna biopolymers 99 12 955 68 doi 10 1002 bip 22334 pmc 3844552 pmid 23818176 clausen schaumann h rief m tolksdorf c gaub he april 2000 mechanical stability of single dna molecules biophysical journal 78 4 1997 2007 bibcode 2000bpj 78 1997c doi 10 1016 s0006 3495 00 76747 6 pmc 1300792 pmid 10733978 chalikian tv völker j plum ge breslauer kj july 1999 a more unified picture for the thermodynamics of nucleic acid duplex melting a characterization by calorimetric and volumetric techniques proceedings of the national academy of sciences of the united states of america 96 14 7853 58 bibcode 1999pnas 96 7853c doi 10 1073 pnas 96 14 7853 pmc 22151 pmid 10393911 dehaseth pl helmann jd june 1995 open complex formation by escherichia coli rna polymerase the mechanism of polymerase induced strand separation of double helical dna molecular microbiology 16 5 817 24 doi 10 1111 j 1365 2958 1995 tb02309 x pmid 7476180 s2cid 24479358 isaksson j acharya s barman j cheruku p chattopadhyaya j december 2004 single stranded adenine rich dna and rna retain structural characteristics of their respective double stranded conformations and show directional differences in stacking pattern pdf biochemistry 43 51 15996 6010 doi 10 1021 bi048221v pmid 15609994 archived pdf from the original on 10 june 2007 1 2 piovesan a pelleri mc antonaros f strippoli p caracausi m vitale l 2019 on the 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