Investigación de los efectos de polaridad en el apilamiento de bases de ADN

Jibin Abraham Punnoose1,2, Chai S Kam1,3, Tristan Melfi1

  • 1The RNA Institute, University at Albany, State University of New York, Albany, New York 12222, United States.

JACS Au
|December 26, 2025
PubMed
Resumen

La polaridad de la hebra impacta significativamente la energética del apilamiento de bases de ADN, con arreglos específicos de purina-pirimidina mostrando mayor estabilidad. Este hallazgo es crucial para el diseño de secuencias cortas de ADN en biotecnología.

Videos de Conceptos Relacionados

DNA as a Genetic Template02:05

DNA as a Genetic Template

Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
27.3K
Base-pairing and DNA Repair02:27

Base-pairing and DNA Repair

89.9K
DNA Topoisomerases02:02

DNA Topoisomerases

Topoisomerases are enzymes that relax overwound DNA molecules during various cell processes, including DNA replication and transcription. These enzymes regulate positive and negative DNA supercoiling without changing the nucleotide sequence. DNA overwinding in a clockwise direction results in positively supercoiled DNA, whereas underwinding in a counterclockwise direction produces negatively supercoiled DNA.
Types and Mechanism of action
Topoisomerases are divided into two main types. ...
34.6K
Single-Strand DNA Binding Proteins01:03

Single-Strand DNA Binding Proteins

For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...
16.4K
DNA Base Pairing02:27

DNA Base Pairing

Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
32.8K
DNA Base Pairing02:27

DNA Base Pairing

31.3K