|
|
|
|
| LEADER |
01000naa a22002652 4500 |
| 001 |
NLM233127461 |
| 003 |
DE-627 |
| 005 |
20231224094443.0 |
| 007 |
tu |
| 008 |
231224s2013 xx ||||| 00| ||eng c |
| 028 |
5 |
2 |
|a pubmed24n0777.xml
|
| 035 |
|
|
|a (DE-627)NLM233127461
|
| 035 |
|
|
|a (NLM)24282335
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Closser, R G
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Characterization of salt interferences in second-harmonic generation detection of protein crystals
|
| 264 |
|
1 |
|c 2013
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
|
| 338 |
|
|
|a Band
|b nc
|2 rdacarrier
|
| 500 |
|
|
|a Date Revised 21.10.2021
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a Studies were undertaken to assess the merits and limitations of second-harmonic generation (SHG) for the selective detection of protein and polypeptide crystal formation, focusing on the potential for false positives from SHG-active salts present in crystallization media. The SHG activities of salts commonly used in protein crystallization were measured and quantitatively compared with reference samples. Out of 19 salts investigated, six produced significant background SHG and 15 of the 96 wells of a sparse-matrix screen produced SHG upon solvent evaporation. SHG-active salts include phosphates, hydrated sulfates, formates and tartrates, while chlorides, acetates and anhydrous sulfates resulted in no detectable SHG activity. The identified SHG-active salts produced a range of signal intensities spanning nearly three orders of magnitude. However, even the weakest SHG-active salt produced signals that were several orders of magnitude greater than those produced by typical protein crystals. In general, SHG-active salts were identifiable through characteristically strong SHG and negligible two-photon-excited ultraviolet fluorescence (TPE-UVF). Exceptions included trials containing either potassium dihydrogen phosphate or ammonium formate, which produced particularly strong SHG, but with residual weak TPE-UVF signals that could potentially complicate discrimination in crystallization experiments using these precipitants
|
| 650 |
|
4 |
|a Journal Article
|
| 650 |
|
4 |
|a protein crystals
|
| 650 |
|
4 |
|a second-harmonic generation
|
| 700 |
1 |
|
|a Gualtieri, E J
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Newman, J A
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Simpson, G J
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Journal of applied crystallography
|d 1998
|g 46(2013), Pt 6 vom: 01. Dez., Seite 1903-1906
|w (DE-627)NLM098121561
|x 0021-8898
|7 nnns
|
| 773 |
1 |
8 |
|g volume:46
|g year:2013
|g number:Pt 6
|g day:01
|g month:12
|g pages:1903-1906
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_350
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 46
|j 2013
|e Pt 6
|b 01
|c 12
|h 1903-1906
|