Protons
Research News and Information

Saturday, November 21, 2009

The second Cu(II)-binding site in a proton-rich environment interferes with the aggregation of amyloid-beta(1-40) into amyloid fibrils.

15 Nov 2009 The overall morphology and Cu(II) ion coordination for the aggregated amyloid-beta(1-40) [Abeta(1-40)] in N-ethylmorpholine (NEM) buffer are affected by Cu(II) ion concentration. This effect is investigated by transmission electron microscopy (TEM), ... Read more...

Hybrid quantum/classical molecular dynamics simulations of the proton transfer reactions catalyzed by ketosteroid isomerase: analysis of hydrogen bonding, conformational motions, and electrostatics.

8 Nov 2009 Hybrid quantum/classical molecular dynamics simulations of the two proton transfer reactions catalyzed by ketosteroid isomerase are presented. The potential energy surfaces for the proton transfer reactions are described with the empirical valence ... Read more...

Clinical and radiobiological advantages of single-dose stereotactic light-ion radiation therapy for large intracranial arteriovenous malformations. Technical note.

30 Oct 2009 OBJECT: Radiation treatment of large arteriovenous malformations (AVMs) remains difficult and not very effective, even though seemingly promising methods such as staged volume treatments have been proposed by some radiation treatment centers. In ... Read more...

Latest indexed articles for 'Protons'

These are the very latest articles for this heading:

• The second Cu(II)-binding site in a proton-rich environment interferes with the aggregation of amyloid-beta(1-40) into amyloid fibrils. 15 Nov 2009
• Hybrid quantum/classical molecular dynamics simulations of the proton transfer reactions catalyzed by ketosteroid isomerase: analysis of hydrogen bonding, conformational motions, and electrostatics. 8 Nov 2009
• Clinical and radiobiological advantages of single-dose stereotactic light-ion radiation therapy for large intracranial arteriovenous malformations. Technical note. 30 Oct 2009
• No evidence for a different RBE between pulsed and continuous 20 MeV protons. 30 Oct 2009
• Proton beam radiotherapy versus three-dimensional conformal stereotactic body radiotherapy in primary peripheral, early-stage non-small-cell lung carcinoma: a comparative dosimetric analysis. 30 Oct 2009
• Study of robustness of IMPT and IMRT for prostate cancer against organ movement. 30 Oct 2009
• The cis-(5R,6S)-thymine glycol lesion occupies the wobble position when mismatched with deoxyguanosine in DNA. 18 Oct 2009
• The taste of carbonation. 14 Oct 2009
• Neuroscience. Enzyme lets you enjoy the bubbly. 14 Oct 2009
• Microsecond light-induced proton transfer to flavin in the blue light sensor plant cryptochrome. 12 Oct 2009
• Brainstem 1H nuclear magnetic resonance (NMR) spectroscopy: marker of demyelination and repair in spinal cord. 29 Sep 2009
• Physiologic reactions after proton beam therapy in patients with prostate cancer: significance of urinary autoactivation. 29 Sep 2009
• Brain injury after proton therapy or carbon ion therapy for head-and-neck cancer and skull base tumors. 29 Sep 2009
• Proton transfer versus nontransfer in compounds of the diazo-dye precursor 4-(phenyldiazenyl)aniline (aniline yellow) with strong organic acids: the 5-sulfosalicylate and the dichroic benzenesulfonate salts, and the 1:2 adduct with 3,5-dinitrobenzoic acid. 28 Sep 2009
• Multiple protonation states of vesicular acetylcholine transporter detected by binding of [3H]vesamicol. 27 Sep 2009
• High-resolution structure of the rotor ring of a proton-dependent ATP synthase. 25 Sep 2009
• Residues in the H+ translocation site define the pKa for sugar binding to LacY. 20 Sep 2009
• Tryptophan conformations associated with partial unfolding in ribonuclease T1. 14 Sep 2009
• Global and local mobility of apocalmodulin monitored through fast-field cycling relaxometry. 14 Sep 2009
• Crystal structure of the catalytic domain of the tumor-associated human carbonic anhydrase IX. 12 Sep 2009

See a longer list of these articles.

Technical information about 'Protons'

Definition: Stable elementary particles having the smallest known positive charge, found in the nuclei of all elements. The proton mass is less than that of a neutron. A proton is the nucleus of the light hydrogen atom, i.e., the hydrogen ion.

Registry Number: 0

Descriptor UI: D011522

Alternative terms: Protons; Proton; Hydrogen Ions; Hydrogen Ion; Ion, Hydrogen; Ions, Hydrogen;

Allowable Qualifiers: adverse effects; classification; diagnostic use; history; therapeutic use;

Tree Number: D01.248.497.300.459.700; D01.435.550; G01.249.765;

History Note: 66

Technical Notes: elementary particles; IM