Water, ions, and hemoglobin: effects on allostery and polymerization

MA Rotter, J Jiang, SM Ferrone… - The Journal of Physical …, 2018 - ACS Publications
… show that the effects of chloride or carbon dioxide on decreasing the affinity of hemoglobin
for … Our results have implications for the allosteric mechanism of oxygen regulation. Were the …

[HTML][HTML] Hemoglobin allostery: variations on the theme

A Bellelli, M Brunori - Biochimica et Biophysica Acta (BBA)-Bioenergetics, 2011 - Elsevier
… role of tertiary and quaternary allosteric effects may be better … R Hb and are locked by ionic
interactions (salt bridges) in … variation is the absence of a water molecule in the heme pocket …

New look at hemoglobin allostery

Y Yuan, MF Tam, V Simplaceanu, C Ho - Chemical reviews, 2015 - ACS Publications
… The allosteric effectors, 2,3-BPG and IHP, significantly affect … behind an Fe 3+ ion for reacting
with water to form aquomet-… the Fe 2+ ion of the deoxy-Mb to interact with water. The aquo-…

Hemoglobin: structure, function and allostery

MH Ahmed, MS Ghatge, MK Safo - Vertebrate and invertebrate respiratory …, 2020 - Springer
… or exogenous ligands or effectors affect Hb allostery. … Hb \( \zeta_{2} \beta_{2}^{s} \) inhibits
polymerization of deoxygenated … chloride ions are found in the larger T structure central water

Mapping polymerization and allostery of hemoglobin s using point mutations

P Weinkam, A Sali - The Journal of Physical Chemistry B, 2013 - ACS Publications
… at a high ionic strength of 2 M phosphate (s), (9) and (4) ionic … described above, polymerization
mutation effects are defined … significant mutation effects on hemoglobin oxygen binding …

[HTML][HTML] The effect of water on the rate of conformational change in protein allostery

RA Goldbeck, SJ Paquette, DS Kliger - Biophysical Journal, 2001 - cell.com
hemoglobin, an allosteric protein in which reduced water … chromatography to strip small ions
and the organic phosphate, 2,3… sodium phosphate buffer stock gave polymer solutions of 10, …

[HTML][HTML] The role of hydration on the mechanism of allosteric regulation: in situ measurements of the oxygen-linked kinetics of water binding to hemoglobin

AG Salvay, JR Grigera, MF Colombo - Biophysical Journal, 2003 - cell.com
hemoglobin is the rate-limiting step of Hb cooperative reaction. This evidences that water
binding is a crucial step on the allosteric … After the original studies of water effects on allosteric

Chloride Ions Stabilize Human Adult Hemoglobin in the T-State, Competing with Allosteric Interaction of Oxygen Molecules

I Kurisaki, Y Takahashi, Y Kitamura… - The Journal of Physical …, 2021 - ACS Publications
effect of solvated O 2 supports our earlier observation for the allosteric regulation of hemoglobin
that such ions are essential and water molecules around the ions may be unimportant for …

Hemoglobin–ligand binding: Understanding Hb function and allostery on atomic level

MK Safo, MH Ahmed, MS Ghatge, T Boyiri - Biochimica et Biophysica Acta …, 2011 - Elsevier
… dioxide, chloride ions also contribute to the Bohr effect by … to bind deeper in the central
water cavity in both the T and R … inhibited deoxygenated sickle Hb polymerization, resulting in …

The allosteric properties of hemoglobin: insights from natural and site directed mutants

A Bellelli, M Brunori, AE Miele… - Current Protein and …, 2006 - ingentaconnect.com
… and function of hemoglobin, and analyzes the effect of point … than the heme, with hydrogen
ions, carbon dioxide, chloride (and … or ions bias the allosteric transition and are thus called the …