含氮碱基(nitrogenous base):与1号碳原子连接,DNA的4个碱基是cytosine (C), guanine (G), adenine (A) 和 thymine (T),RNA中有U (Uracil),没有T。G、A属于嘌呤(purine),双环结构;C、T、U属于嘧啶(pyrimidine),单环结构。 五碳糖(pentose sugar):DNA中是脱氧核糖(deoxyribose),RNA中是核糖(ribose) 磷...
[3,4-d]-pyrimidine. Structure of a pyrazolo-[3,4-d]-pyrimidine.Structure of a pyrazolo-[3,4-d]-pyrimidine.Thomas, KruewelSilvia, SchenoneMarco, RadiGiovanni, MagaAstrid, RohrbeckMaurizio, BottaJuergen, Borlak
Study pyrimidine bases, and learn how they differ in DNA and RNA structures. See examples of pyrimidine bases, along with their structural forms in...
The NMR spectrum of pyrimidine has been studied in the nematic phase of 4-methoxy benzylidene-4-amino-伪-methyl cinnamic acid-n-propyl ester at room temperature. The ratios of all the interproton distances are determined and found to differ significantly from those obtained from microwave data....
Bernier JL, Henichart JP, Warin V, Baert F. Synthesis and structure-activity relationship of a pyrimido[4,5-d]pyrimidine derivative with antidepressant activity. J Pharm Sci 1980;69(11):1343-5.J. L. Bernier, J. P. Henichart, V. Warin, and F. Baert, "Syn- thesis and structure-...
On the other hand, the inhibitor IKK-16 lies on the site entrance and hydrophobically interacts with residues V26, M89, V92, and A158. The benzothiophene planar ring extends deep within the cPknF catalytic site, connecting the N1 of the pyrimidine ring to the main chain residues from the ...
They are joined together in pairs, a single base from one chain being hydrogen~bonded to a single base from the other chain, so that the two lie side by side with identical z-co-ordinates. One of the pair must be a purine and the other a pyrimidine for bonding to occur. The ...
Solution structure of a pyrimidine·purine·pyrimidine DNA triplex containing T·AT, C+ ·GC and G·TA triples StructureRadhakrishnan I, Patel DJ (1994) Solution structure of a pyrimidine.purine.pyrimidine DNA triplex containing T.AT, C+.GC and G.TA triples. ... Ishwar,Radhakrishnan,and,.....
7.1 Structure of DNA 7.1.1 Describe the structure of DNA, including the antiparallel strands, 3' -5' linkages and hydrogen bonding between purines and pyrimidines. DNA is made up of two strands. At one end of each strand there is a phosphate group attached to the carbon atom number 5 ...
Spectrochimica Acta Part A Molecular & Biomolecular SpectroscopyKrishna Kumar V, John Xavier R (2006) Molecular and vibrational structure of 2-mercapto pyrimidine and 2, 4-diamino-6-hydroxy-5- nitroso pyrimidine: FT- IR, FT-Raman and quantum chemical calculations. Spectrochimica Acta, Part A: ...