Ordered self-assembled monolayers of Peptide nucleic acids with DNA recognition capability.
Phys Rev Lett
; 93(20): 208103, 2004 Nov 12.
Article
en En
| MEDLINE
| ID: mdl-15600975
We report on the formation of ordered self-assembled monolayers (SAMs) of single-stranded peptide nucleic acids (ssPNA). In spite of their remarkable length (7 nm) thiolated PNAs assemble standing up on gold surfaces similarly to the SAMs of short alkanethiols. SAMs of ssPNA recognize complementary nucleic acids, acting as specific biosensors that discriminate even a point mutation in target ssDNA. These results are obtained by surface characterization techniques that avoid labeling of the target molecule: x-ray photoemission, x-ray absorption and atomic force microscopy.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
ADN de Cadena Simple
/
Ácidos Nucleicos de Péptidos
Idioma:
En
Revista:
Phys Rev Lett
Año:
2004
Tipo del documento:
Article
País de afiliación:
España
Pais de publicación:
Estados Unidos