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Full-Text Articles in Biology

Single Molecule Analysis Of The Arabidopsis Fra1 Kinesin Shows That It Is A Functional Motor Protein With Unusually High Processivity, Chuanmei Zhu, Ram Dixit Sep 2011

Single Molecule Analysis Of The Arabidopsis Fra1 Kinesin Shows That It Is A Functional Motor Protein With Unusually High Processivity, Chuanmei Zhu, Ram Dixit

Biology Faculty Publications & Presentations

The Arabidopsis FRA1 kinesin contributes to the organization of cellulose microfibrils through an unknown mechanism. The cortical localization of this kinesin during interphase raises the possibility that it transports cell wall-related cargoes along cortical microtubules that either directly or indirectly influence cellulose microfibril patterning. To determine whether FRA1 is an authentic motor protein, we combined bulk biochemical assays and single molecule fluorescence imaging to analyze the motor properties of recombinant, GFP-tagged FRA1 containing the motor and coiled-coil domains (designated as FRA1(707)–GFP). We found that FRA1(707)–GFP binds to microtubules in an ATP-dependent manner and that its ATPase activity is dramatically stimulated …


Determining The Composition Of The Dwelling Tubes Of Antarctic Pterobranchs, Lukasz J. Sewera Apr 2011

Determining The Composition Of The Dwelling Tubes Of Antarctic Pterobranchs, Lukasz J. Sewera

Honors Projects

Pterobranchs are a group of marine invertebrates within the Hemichordata, which share characteristics with both chordates and echinoderms. Pterobranchs live in colonies of secreted tubes, coenicia, which are composed of a gelatinous material of unknown composition. Visually, the tubes appear similar to the tunic of tunicates, a group of invertebrates within the Chordata. The nonproteinaceous tunic of tunicates is composed of cellulose, which is unusual. The goal of this study was to determine the composition of the pterobranch coenicium. Some aspects of pterobranch phylogeny are still unclear even after multiple molecular and morphological studies. Identification of any new shared characteristics …


Quantitative Analysis Of Lignocellulosic Components Of Non-Treated And Steam Exploded Barley, Canola, Oat And Wheat Straw Using Fourier Transform Infrared Spectroscopy, P. K. Adapa, L. G. Schonenau, Thomas Canam, T. Dumonceaux Jan 2011

Quantitative Analysis Of Lignocellulosic Components Of Non-Treated And Steam Exploded Barley, Canola, Oat And Wheat Straw Using Fourier Transform Infrared Spectroscopy, P. K. Adapa, L. G. Schonenau, Thomas Canam, T. Dumonceaux

Thomas Canam

Rapid and cost effective quantification of lignocellulosic components (cellulose, hemicelluloses and lignin) of agricultural biomass (barley, canola, oat and wheat) is essential to determine the effect of various pre-treatments (such as steam explosion) on biomass used as feedstock for the biofuel industry. Fourier Transformed Infrared (FTIR) spectroscopy was considered as an option to achieve this objective. Regression equations having R2 values of 0.89, 0.99 and 0.98 were developed to predict the cellulose, hemicelluloses and lignin compounds of biomass, respectively. The average absolute difference in predicted and measured cellulose, hemicellulose and lignin in agricultural biomass was 7.5%, 2.5%, and 3.8%, respectively.


Quantitative Analysis Of Lignocellulosic Components Of Non-Treated And Steam Exploded Barley, Canola, Oat And Wheat Straw Using Fourier Transform Infrared Spectroscopy, P. Adapa, L. Schonenau, Thomas Canam, T. Dumonceaux Jan 2011

Quantitative Analysis Of Lignocellulosic Components Of Non-Treated And Steam Exploded Barley, Canola, Oat And Wheat Straw Using Fourier Transform Infrared Spectroscopy, P. Adapa, L. Schonenau, Thomas Canam, T. Dumonceaux

Faculty Research & Creative Activity

Rapid and cost effective quantification of lignocellulosic components (cellulose, hemicelluloses and lignin) of agricultural biomass (barley, canola, oat and wheat) is essential to determine the effect of various pre-treatments (such as steam explosion) on biomass used as feedstock for the biofuel industry. Fourier Transformed Infrared (FTIR) spectroscopy was considered as an option to achieve this objective. Regression equations having R2 values of 0.89, 0.99 and 0.98 were developed to predict the cellulose, hemicelluloses and lignin compounds of biomass, respectively. The average absolute difference in predicted and measured cellulose, hemicellulose and lignin in agricultural biomass was 7.5%, 2.5%, and 3.8%, respectively.


Quantitative Analysis Of Lignocellulosic Components Of Non-Treated And Steam Exploded Barley, Canola, Oat And Wheat Straw Using Fourier Transform Infrared Spectroscopy, P. K. Adapa, L. G. Schonenau, Thomas Canam, T. Dumonceaux Jan 2011

Quantitative Analysis Of Lignocellulosic Components Of Non-Treated And Steam Exploded Barley, Canola, Oat And Wheat Straw Using Fourier Transform Infrared Spectroscopy, P. K. Adapa, L. G. Schonenau, Thomas Canam, T. Dumonceaux

Faculty Research & Creative Activity

Rapid and cost effective quantification of lignocellulosic components (cellulose, hemicelluloses and lignin) of agricultural biomass (barley, canola, oat and wheat) is essential to determine the effect of various pre-treatments (such as steam explosion) on biomass used as feedstock for the biofuel industry. Fourier Transformed Infrared (FTIR) spectroscopy was considered as an option to achieve this objective. Regression equations having R2 values of 0.89, 0.99 and 0.98 were developed to predict the cellulose, hemicelluloses and lignin compounds of biomass, respectively. The average absolute difference in predicted and measured cellulose, hemicellulose and lignin in agricultural biomass was 7.5%, 2.5%, and 3.8%, respectively.