Proton-Metal Cation Exchange in the Cell Wall of Nitella flexilis

When protons are exchanging for bivalent cations (Cu2+, Zn2+, or Ca2+) on the carboxylic groups of Nitella flexilis cell wall, the values of the respective global equilibrium constants do not change up to a protonation degree of 80%. These values drastically increase at higher proton concentrations...

Full description

Bibliographic Details
Main Authors: Van Cutsem, Pierre, Gillet, Claude
Format: Text
Language:English
Published: 1983
Subjects:
Articles
Nitella flexilis
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1066565
http://www.ncbi.nlm.nih.gov/pubmed/16663317
id ftpubmed:oai:pubmedcentral.nih.gov:1066565
record_format openpolar
spelling ftpubmed:oai:pubmedcentral.nih.gov:1066565 2023-05-15T17:23:48+02:00 Proton-Metal Cation Exchange in the Cell Wall of Nitella flexilis Van Cutsem, Pierre Gillet, Claude 1983-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1066565 http://www.ncbi.nlm.nih.gov/pubmed/16663317 en eng http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1066565 http://www.ncbi.nlm.nih.gov/pubmed/16663317 Articles Text 1983 ftpubmed 2013-08-30T07:44:41Z When protons are exchanging for bivalent cations (Cu2+, Zn2+, or Ca2+) on the carboxylic groups of Nitella flexilis cell wall, the values of the respective global equilibrium constants do not change up to a protonation degree of 80%. These values drastically increase at higher proton concentrations and tend to ≃3.4, which is the intrinsic pK value of the constitutive α-d-galacturonic acid monomer. These data suggest that the electric field in the matricial polymer and the cation bridges between pairs of negative sites have disappeared. Text Nitella flexilis PubMed Central (PMC)
institution Open Polar
collection PubMed Central (PMC)
op_collection_id ftpubmed
language English
topic Articles
spellingShingle Articles
Van Cutsem, Pierre
Gillet, Claude
Proton-Metal Cation Exchange in the Cell Wall of Nitella flexilis
topic_facet Articles
description When protons are exchanging for bivalent cations (Cu2+, Zn2+, or Ca2+) on the carboxylic groups of Nitella flexilis cell wall, the values of the respective global equilibrium constants do not change up to a protonation degree of 80%. These values drastically increase at higher proton concentrations and tend to ≃3.4, which is the intrinsic pK value of the constitutive α-d-galacturonic acid monomer. These data suggest that the electric field in the matricial polymer and the cation bridges between pairs of negative sites have disappeared.
format Text
author Van Cutsem, Pierre
Gillet, Claude
author_facet Van Cutsem, Pierre
Gillet, Claude
author_sort Van Cutsem, Pierre
title Proton-Metal Cation Exchange in the Cell Wall of Nitella flexilis
title_short Proton-Metal Cation Exchange in the Cell Wall of Nitella flexilis
title_full Proton-Metal Cation Exchange in the Cell Wall of Nitella flexilis
title_fullStr Proton-Metal Cation Exchange in the Cell Wall of Nitella flexilis
title_full_unstemmed Proton-Metal Cation Exchange in the Cell Wall of Nitella flexilis
title_sort proton-metal cation exchange in the cell wall of nitella flexilis
publishDate 1983
url http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1066565
http://www.ncbi.nlm.nih.gov/pubmed/16663317
genre Nitella flexilis
genre_facet Nitella flexilis
op_relation http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1066565
http://www.ncbi.nlm.nih.gov/pubmed/16663317
_version_ 1766114261394784256

Similar Items