Thermoresponsive self-assembly of short elastin-like polypentapeptides and their poly(ethylene glycol) derivatives.
Macromol Biosci
; 7(1): 56-69, 2007 Jan 05.
Article
en En
| MEDLINE
| ID: mdl-17238231
ABSTRACT
Short polypeptides with four pentad repeats, (VPGVG)(4) and (VPAVG)(4), were synthesised by manual fluorenylmethoxycarbonyl/tert-butyl (Fmoc/t-Bu) solid phase peptide synthesis using a convergent approach. In the next step, the peptides were coupled via their N-terminus with activated semi-telechelic poly(ethylene glycol) O-(N-Fmoc-2-aminoethyl)-O'-(2-carboxyethyl)undeca(ethylene glycol) (Fmoc-PEG-COOH) to yield monodisperse Fmoc-PEG-peptide diblock copolymer. Both the presence of the terminal hydrophobic Fmoc group and the hydrophilic PEG chain in the copolymers were shown to play a crucial role in their self-associative behaviour, leading to reversible formation of supramolecular thermoresponsive assemblies. The peptides and their PEG derivatives were characterised by HPLC, NMR and MALDI-TOF MS. The associative behaviour of the peptides and their PEG derivatives was studied by dynamic light scattering, MAS NMR and phase contrast microscopy. [image see text]
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Banco de datos:
MEDLINE
Asunto principal:
Péptidos
/
Polietilenglicoles
/
Elastina
Idioma:
En
Revista:
Macromol Biosci
Asunto de la revista:
BIOQUIMICA
Año:
2007
Tipo del documento:
Article
País de afiliación:
República Checa