| Id |
Subject |
Object |
Predicate |
Lexical cue |
| T1 |
0-78 |
Sentence |
denotes |
A modular nanoparticle-based system for reagentless small molecule biosensing. |
| T2 |
79-198 |
Sentence |
denotes |
Metalloprotein tethered CdSe nanoparticles have been generated to provide selective and reagentless maltose biosensing. |
| T3 |
199-398 |
Sentence |
denotes |
As opposed to cell or protein detection by semiconducting nanoparticle bioconjugates, a modular method for small-molecule detection using semiconducting nanoparticle bioconjugates has been difficult. |
| T4 |
399-492 |
Sentence |
denotes |
Here we report a method for reagentless protein-based semiconducting nanoparticle biosensors. |
| T5 |
493-691 |
Sentence |
denotes |
This method uses Ru(II) complex-CdSe nanoparticle interactions and the maltose-induced conformation changes of maltose binding protein to alter the CdSe nanoparticle fluorescence emission intensity. |
| T6 |
692-876 |
Sentence |
denotes |
In this proof-of-principle system, the maltose-induced protein conformation changes alter the Ru(II) complex-CdSe nanoparticle interaction, which increases the CdSe emission intensity. |
| T7 |
877-1045 |
Sentence |
denotes |
Altered CdSe emission intensity effects are best described as electron transfer from the Ru(II) complex to the CdSe excited state forming the nonfluorescent CdSe anion. |
| T8 |
1046-1198 |
Sentence |
denotes |
Four surface-cysteine, Ru(II) complex-attached maltose-binding proteins have been studied for maltose dependent alteration of CdSe emission intensities. |
| T9 |
1199-1416 |
Sentence |
denotes |
With 3.0-3.5 nm diameter CdSe nanoparticles, all ruthenated maltose-binding proteins display similar maltose-dependent increases (1.4-fold) in CdSe emission intensity and maltose binding affinities (KA = 3 x 106 M-1). |
| T10 |
1417-1527 |
Sentence |
denotes |
For these four systems, the only difference was the sample-to-sample variation in maltose-dependent responses. |
| T11 |
1528-1681 |
Sentence |
denotes |
Thus, very few surface cysteine mutations need to be examined to find a successful biosensor, as opposed to analogous systems using organic fluorophores. |
| T12 |
1682-1873 |
Sentence |
denotes |
This strategy generates a unimolecular, or reagentless, semiconducting nanoparticle biosensor for maltose, which could be applied to other proteins with ligand-dependent conformation changes. |