Results 71 to 80 of about 555,047 (351)

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Ocena zawartości azotanów w wodach rzeki Dunajec

Agronomy Science, 2006
Human activities transform the natural environment and cause an extreme biogen inflow to surface waters. The current investigation was aimed to estimate the effect of agricultural and domestic human activities at lowland area of the Dunajec watershed on ...
Barbara Wiśniowska-Kielian, Marcin Niemiec   +1 more
doaj  

Observations of total RONO2 over the boreal forest: NO x sinks and HNO3 sources [PDF]

, 2013
In contrast with the textbook view of remote chemistry where HNO 3 formation is the primary sink of nitrogen oxides, recent theoretical analyses show that formation of RONO2 (ΣANs) from isoprene and other terpene precursors is the primary net chemical ...
Apel, E, Blake, DR, Browne, EC, Brune, WH, Cantrell, CA, Cohen, RC, Cubison, MJ, Diskin, GS, Jimenez, JL, Min, KE, Weinheimer, AJ, Wennberg, PO, Wisthaler, A, Wooldridge, PJ   +13 more
core   +1 more source

Norfloxacinium nitrate

IUCrData
In the title salt [systematic name: 4-(3-carboxy-1-ethyl-6-fluoro-4-oxo-1,4-dihydroquinolin-7-yl)piperazin-1-ium nitrate], C16H19FN3O3 +·NO3 −, proton transfer from nitric acid to the N atom of the piperazine ring of norfloxacin has occurred to form a molecular salt.
Abdusamat Rasulov, Batirbay Torambetov, Bekmurod Alimnazarov, Shakhnoza Kadirova, Jabbor Suyunov, Yusufjon Nazarov, Jamshid Ashurov   +6 more
openaire   +3 more sources

The planar cell polarity protein Vangl2 interacts with the PDZ‐domains of Scribble but not with a unique PDZ‐like domain in Inturned

FEBS Letters, EarlyView.
Structural and biochemical characterisations show that the planar cell polarity (PCP) protein Inturned harbours a unique PDZ‐like domain that does not bind canonical PDZ‐binding motifs (PBMs) like that of another PCP protein Vangl2. In contrast, the apical‐basal polarity protein Scribble contains four PDZ domains that bind Vangl2, but one PDZ domain ...
Stephan Wilmes, Jan Brysch, Carmen Gelze, Lilli Meier, Daniel Kümmel   +4 more
wiley   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Effect of NOx level on secondary organic aerosol (SOA) formation from the photooxidation of terpenes [PDF]

, 2007
Secondary organic aerosol (SOA) formation from the photooxidation of one monoterpene (α-pinene) and two sesquiterpenes (longifolene and aromadendrene) is investigated in the Caltech environmental chambers.
Chan, A. W. H., Chhabra, P. S., Dalleska, N. F., Flagan, R. C., Kroll, J. H., Kwan, A. J., McCabe, D. C., Murphy, S. M., Ng, N. L., Seinfeld, J. H., Sorooshian, A., Surratt, J. D., Wennberg, P. O.   +12 more
core   +1 more source

Comprehensive inter-laboratory calibration of reference materials for δ18O versus VSMOW using various on-line high-temperature conversion techniques [PDF]

, 2009
Internationally distributed organic and inorganic oxygen isotopic reference materials have been calibrated by six laboratories carrying out more than 5300 measurements using a variety of high-temperature conversion techniques (HTC) in an evaluation ...
Accoe, Bao, Barkan, Belcher, Belcher, Benson, Bircumshaw, Boettger, Boschetti, Brand, Brand, Brotherton, Böhlke, Coplen, Coplen, Coplen, Coplen, Coplen, Crowley, Dennis, Epstein, Farquhar, Farquhar, Gehre, Gehre, Gonfiantini, Gonfiantini, Halas, Hannon, Hayes, Hoshino, Johnston, Kornexl, Kornexl, Kornexl, Koziet, Kroopnic, Lang, Luz, Maltsev, Meijer, Meyer, Meyer, Muller, Murphy, Olsen, Pella, Revesz, Santrock, Santrock, Schmidt, Schuetze, Stalker, Sternberg, Sternberg, Sternberg, Sternberg, Stuart-Williams, Unterzaucher, Unterzaucher, Unterzaucher, van Hook, Wedeking, Werner, Werner, Werner, Werner   +66 more
core   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source