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Univerza v Novi Gorici
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Naslov:
System size dependence in the Zimm-Bragg model : partition function limits, transition temperature and interval
Avtorji:
ID
Badasyan, Artem
(Avtor)
Datoteke:
https://www.mdpi.com/2073-4360/13/12/1985
Jezik:
Angleški jezik
Vrsta gradiva:
Neznano
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
UNG - Univerza v Novi Gorici
Opis:
Within the recently developed Hamiltonian formulation of the Zimm and Bragg model we re-evaluate several size dependent approximations of model partition function. Our size analysis is based on the comparison of chain length N with the maximal correlation (persistence) length ξ of helical conformation. For the first time we re-derive the partition function of zipper model by taking the limits of the Zimm–Bragg eigenvalues. The critical consideration of applicability boundaries for the single-sequence (zipper) and the long chain approximations has shown a gap in description for the range of experimentally relevant chain lengths of 5–10 persistence lengths ξ. Correction to the helicity degree expression is reported. For the exact partition function we have additionally found, that: at N/ξ ≈ 10 the transition temperature T m reaches its asymptotic behavior of infinite N; the transition interval ∆T needs about a thousand persistence lengths to saturate at its asymptotic, infinite length value. Obtained results not only contribute to the development of the Zimm–Bragg model, but are also relevant for a wide range of Biotechnologies, including the Biosensing applications.
Ključne besede:
Zimm-Bragg model
,
helix-coil transition
,
zipper model
Leto izida:
2021
Št. strani:
str. 1-11
Številčenje:
Vol. 13, iss. 12
PID:
20.500.12556/RUNG-6595
COBISS.SI-ID:
67393795
UDK:
53
ISSN pri članku:
2073-4360
DOI:
10.3390/polym13121985
NUK URN:
URN:SI:UNG:REP:CLG5R7QB
Datum objave v RUNG:
17.06.2021
Število ogledov:
3167
Število prenosov:
87
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Gradivo je del revije
Naslov:
Polymers
Skrajšan naslov:
Polymers
Založnik:
Molecular Diversity Preservation International
ISSN:
2073-4360
COBISS.SI-ID:
517951257
Gradivo je financirano iz projekta
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
J1-1705; P2-0412
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