Coarse-grained modeling of proline rich protein 1 (PRP-1) in bulk solution and adsorbed to a negatively charged surface
Skepö, Marie LU
; Linse, Per
LU
and Arnebrant, T
(2006)
In The Journal of Physical Chemistry Part B
110(24).
p.12141-12148
- Abstract
- Structural properties of the acidic proline rich protein PRP-1 of salivary origin in bulk solution and adsorbed onto a negatively charged surface have been studied by Monte Carlo simulations. A simple model system with focus on electrostatic interactions and short-ranged attractions among the uncharged amino acids has been used. In addition to PRP-1, some mutants were considered to assess the role of the interactions in the systems. Contrary to polyelectrolytes, the protein has a compact structure in salt-free bulk solutions, whereas at high salt concentration the protein becomes more extended. The protein adsorbs to a negatively charged surface, although its net charge is negative. The adsorbed protein displays an extended structure,... (More)
- Structural properties of the acidic proline rich protein PRP-1 of salivary origin in bulk solution and adsorbed onto a negatively charged surface have been studied by Monte Carlo simulations. A simple model system with focus on electrostatic interactions and short-ranged attractions among the uncharged amino acids has been used. In addition to PRP-1, some mutants were considered to assess the role of the interactions in the systems. Contrary to polyelectrolytes, the protein has a compact structure in salt-free bulk solutions, whereas at high salt concentration the protein becomes more extended. The protein adsorbs to a negatively charged surface, although its net charge is negative. The adsorbed protein displays an extended structure, which becomes more compact upon addition of salt. Hence, the conformational response upon salt addition in the adsorbed state is the opposite as compared to that in bulk solution. The conformational behavior of PRP-1 in bulk solution and at charged surfaces as well as its propensity to adsorb to surfaces with the same net charge are rationalized by the block polyampholytic character of the protein. The presence of a triad of positively charged amino acids in the C-terminal was found to be important for the adsorption of the protein. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/405978
- author
- Skepö, Marie
LU
; Linse, Per
LU
and Arnebrant, T
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- in
- The Journal of Physical Chemistry Part B
- volume
- 110
- issue
- 24
- pages
- 12141 - 12148
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:000238284600077
- scopus:33745778027
- ISSN
- 1520-5207
- DOI
- 10.1021/jp056033o
- language
- English
- LU publication?
- yes
- id
- c4b33f89-42e0-4cbc-b018-49ec595078c4 (old id 405978)
- date added to LUP
- 2016-04-01 16:46:34
- date last changed
- 2024-10-12 03:23:13
@article{c4b33f89-42e0-4cbc-b018-49ec595078c4,
abstract = {{Structural properties of the acidic proline rich protein PRP-1 of salivary origin in bulk solution and adsorbed onto a negatively charged surface have been studied by Monte Carlo simulations. A simple model system with focus on electrostatic interactions and short-ranged attractions among the uncharged amino acids has been used. In addition to PRP-1, some mutants were considered to assess the role of the interactions in the systems. Contrary to polyelectrolytes, the protein has a compact structure in salt-free bulk solutions, whereas at high salt concentration the protein becomes more extended. The protein adsorbs to a negatively charged surface, although its net charge is negative. The adsorbed protein displays an extended structure, which becomes more compact upon addition of salt. Hence, the conformational response upon salt addition in the adsorbed state is the opposite as compared to that in bulk solution. The conformational behavior of PRP-1 in bulk solution and at charged surfaces as well as its propensity to adsorb to surfaces with the same net charge are rationalized by the block polyampholytic character of the protein. The presence of a triad of positively charged amino acids in the C-terminal was found to be important for the adsorption of the protein.}},
author = {{Skepö, Marie and Linse, Per and Arnebrant, T}},
issn = {{1520-5207}},
language = {{eng}},
number = {{24}},
pages = {{12141--12148}},
publisher = {{The American Chemical Society (ACS)}},
series = {{The Journal of Physical Chemistry Part B}},
title = {{Coarse-grained modeling of proline rich protein 1 (PRP-1) in bulk solution and adsorbed to a negatively charged surface}},
url = {{http://dx.doi.org/10.1021/jp056033o}},
doi = {{10.1021/jp056033o}},
volume = {{110}},
year = {{2006}},
}