Results 51 to 60 of about 10,455 (304)

Resolution of Key Roles for the Distal Pocket Histidine in Cytochrome c Nitrite Reductases [PDF]

, 2015
Cytochrome c nitrite reductases perform a key step in the biogeochemical N-cycle by catalyzing the six-electron reduction of nitrite to ammonium. These multi-heme cytochromes contain a number of His/His ligated c-hemes for electron transfer and a ...
Burlat, Benedicte, Butt, Julea, Cheesman, Myles, Clarke, Tom, Kern, Melanie, Lockwood, Colin, Richardson, David, Simon, Jorg   +7 more
core   +5 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

NITROGEN CYCLE IN NATURE: POSITIVE AND NEGATIVE EFFECTS [PDF]

Vestnik Issyk-Kulʹskogo universiteta
This study examines the process of nitrogen cycling in nature, as well as its positive and negative effects on ecosystems. Nitrogen is one of the most common elements in nature, is part of the main biological compounds and is one of the most important ...
Beknazarova Zh. M.
doaj   +1 more source

Microbial ecosystem constructed in water for successful organic hydroponics [PDF]

, 2008
Conventional hydroponics systems generally use only chemical fertilisers, not organic ones, since there are no microbial ecosystems present in such systems to mineralise organic compounds to inorganic nutrients.
Hiromi Ohmori, Makoto Shinohara, Yoichi Uehara   +2 more
core   +1 more source

Changes in Biochemical Activity of Podzolic Chernozem under the Influence of Buckwheat Cultivation in the Conditions of Traditional and Organic Farming Systems [PDF]

, 2017
Проведено дослідження та виявлено зміни біологічної активності чорнозему опідзоленого Лісостепу України при вирощуванні гречки, як основної сільськогосподарської культури так і культури попередника за показниками ферментативної активності і процесів ...
Tsygichko, Ganna
core   +3 more sources

Photo-ammonification of Organic Nitrogenous Compounds in the Soil [PDF]

Nature, 1938
IN recent years Gopala Rao and Dhar1, Gopala Rao2, Dhar and co-workers3 and Corbet4 have shown that nitrification in soils occurs partly as a photochemical reaction under the influence of sunlight. Dhar and co-workers5 have also brought forward considerable evidence to show that fixation of atmospheric nitrogen is favoured by sunlight.
G. GOPALA RAO, CH. I. VARADANAM
openaire   +1 more source

Infrared laser sampling of low volumes combined with shotgun lipidomics reveals lipid markers in palatine tonsil carcinoma

Molecular Oncology, EarlyView.
Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff, Manuela Moritz, Dennis Eggert, Anna Worthmann, Joerg Heeren, Henrike Zech, Till S. Clauditz, Waldemar Wilczak, Hartmut Schlüter, Christian S. Betz, Arne Böttcher, Jan Hahn   +11 more
wiley   +1 more source

Peroxidasin enables melanoma immune escape by inhibiting natural killer cell cytotoxicity

Molecular Oncology, EarlyView.
Peroxidasin (PXDN) is secreted by melanoma cells and binds the NK cell receptor NKG2D, thereby suppressing NK cell activation and cytotoxicity. PXDN depletion restores NKG2D signaling and enables effective NK cell–mediated melanoma killing. These findings identify PXDN as a previously unrecognized immune evasion factor and a potential target to improve
Hsu‐Min Sung, David Bickel, Lena C. M. Krause, Daria Ezeriņa, Christian Ickes, Julian Wojtachnia, Christine S. Gibhardt, Magdalena Shumanska, Khadija Wahni, Andrea Paluschkiwitz, Julia Malo Pueyo, Ekaterina Baranova, Wim Vranken, Hedwig Stanisz, Ioana Stejerean‐Todoran, Michael P. Schön, Joris Messens, Ivan Bogeski   +17 more
wiley   +1 more source

Nitrogen removal in marine environments: recent findings and future research challenges [PDF]

, 2005
Respiratory reduction of nitrate (denitrification) is recognized as the most important process converting biologically available (fixed) nitrogen to N2. In current N cycle models, a major proportion of global marine denitrification (50–70%) is assumed to
Aller, Robert Curwood, Canfield, Donald E., Dalsgaard, Tage, Engström, Pia, Gilbert, Franck, Hulth, Stefan, Sundbäck, Kristina, Thamdrup, Bo   +7 more
core   +3 more sources

Identification of serum protein biomarkers for pre‐cancerous lesions associated with pancreatic ductal adenocarcinoma

Molecular Oncology, EarlyView.
This work identified serum proteins associated with pancreatic epithelial neoplasms (PanINs) and early‐stage PDAC. Proteomics screens assessed genetically engineered mice with abundant PanINs, KPC mice (Lox‐STOP‐Lox‐KrasG12D/+ Lox‐STOP‐Lox‐Trp53R172H/+ Pdx1‐Cre) before PDAC development and also early‐stage PDAC patients (n = 31), compared to benign ...
Hannah Mearns, Jaclyn S. Long, Sergio Lilla, Kelly Hodge, Marcus J. G. W. Ladds, Colin Nixon, Paula Fernández‐Palanca, Sara Zanivan, Pilar Acedo, Stephen P. Pereira, Kevin M. Ryan   +10 more
wiley   +1 more source