Results 61 to 70 of about 16,549 (213)

Antibacterial activity of the Antarctic bacterium Janthinobacterium sp. SMN 33.6 against multi-resistant Gram-negative bacteria

Electronic Journal of Biotechnology, 2014
Background: The increment of resistant strains to commonly used antibiotics in clinical practices places in evidence the urgent need to search for new compounds with antibacterial activity.
Geraldine Asencio, Paris Lavin, Karen Alegría, Mariana Domínguez, Helia Bello, Gerardo González-Rocha, Marcelo González-Aravena   +6 more
doaj   +1 more source

Linear Aminolipids with Moderate Antimicrobial Activity from the Antarctic Gram-Negative Bacterium Aequorivita sp.

Marine Drugs, 2018
The combination of LC-MS/MS based metabolomics approach and anti-MRSA activity-guided fractionation scheme was applied on the Gram-negative bacterium Aequorivita sp. isolated from shallow Antarctic sea sediment using a miniaturized culture chip technique.
Giuseppina Chianese, Fortunato Palma Esposito, Delphine Parrot, Colin Ingham, Donatella de Pascale, Deniz Tasdemir   +5 more
doaj   +1 more source

Separate origins of ice-binding proteins in antarctic chlamydomonas species. [PDF]

PLoS ONE, 2013
The green alga Chlamydomonas raudensis is an important primary producer in a number of ice-covered lakes and ponds in Antarctica. A C. raudensis isolate (UWO241) from Lake Bonney in the McMurdo Dry Valleys, like many other Antarctic algae, was found to ...
James A Raymond, Rachael Morgan-Kiss
doaj   +1 more source

Ca2+-stabilized adhesin helps an Antarctic bacterium reach out and bind ice. [PDF]

Biosci Rep, 2014
The large size of a 1.5-MDa ice-binding adhesin [MpAFP (Marinomonas primoryensis antifreeze protein)] from an Antarctic Gram-negative bacterium, M. primoryensis, is mainly due to its highly repetitive RII (Region II). MpAFP_RII contains roughly 120 tandem copies of an identical 104-residue repeat.
Vance TD, Olijve LL, Campbell RL, Voets IK, Davies PL, Guo S.   +5 more
europepmc   +5 more sources

Lichen bleaching as a response to long‐term experimental warming in the High Arctic

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Lichens are an important component of Arctic ecosystems. Studies have indicated a decline in the abundance of Arctic lichens during recent decades, which is often attributed to competitive pressure from vascular plants.
Jiří Šubrt, Mariana García Criado, Kevin K. Newsham, Claudia Colesie   +3 more
wiley   +1 more source

Genomic insights into the cold adaptation and secondary metabolite potential of Pseudoalteromonas sp. WY3 from Antarctic krill

Frontiers in Microbiology
In the Antarctic marine ecosystem, krill play a pivotal role, yet the intricate microbial community intertwined with these diminutive crustaceans remains largely unmapped.
Yuanyuan Wang, Jinxuan Xie, Zhengqi Feng, Linbo Ma, Wenbo Wu, Changjun Guo, Jianguo He   +6 more
doaj   +1 more source

Lactic acid production by Carnobacterium sp. isolated from a maritime Antarctic lake using eucalyptus enzymatic hydrolysate

Biotechnology Reports, 2021
Carnobacterium sp., a lactic acid bacterium isolated from a maritime Antarctic lake, was evaluated for lactic acid production from a lignocellulosic hydrolysate.
Laura Camesasca, Juan Andrés de Mattos, Eugenia Vila, Florencia Cebreiros, Claudia Lareo   +4 more
doaj   +1 more source

Discovery of a cryptic aminoacidic triad involved in the temperature adaptation of GH1 enzymes

The FEBS Journal, EarlyView.
Cold‐active enzymes retain high catalytic activity at low temperatures but are characterized by thermal instability, a behavior not fully understood. Comparison between a cold‐active GH1 and its mesophilic counterparts highlights the role of a three‐residue motif (W‐M‐F) in conferring structural stability to a mesophilic GH1.
Stefania Digiovanni, Gabriel Oanca, Marco Orlando, Marina Lotti, Johan Åqvist, Marco Mangiagalli   +5 more
wiley   +1 more source

A novel promising laccase from the psychrotolerant and halotolerant Antarctic marine Halomonas sp. M68 strain

Frontiers in Microbiology, 2023
Microbial communities inhabiting the Antarctic Ocean show psychrophilic and halophilic adaptations conferring interesting properties to the enzymes they produce, which could be exploited in biotechnology and bioremediation processes.
Melissa Bisaccia, Elisa Binda, Elena Rosini, Gabriella Caruso, Ombretta Dell'Acqua, Maurizio Azzaro, Pasqualina Laganà, Gabriella Tedeschi, Gabriella Tedeschi, Elisa M. Maffioli, Elisa M. Maffioli, Loredano Pollegioni, Flavia Marinelli   +12 more
doaj   +1 more source

Characterisation of bacterioplankton communities in the meltwater ponds of Bratina Island, Victoria Land, Antarctica [PDF]

, 2014
A unique collection of Antarctic aquatic environments (meltwater ponds) lies in close proximity on the rock and sediment-covered undulating surface of the McMurdo Ice Shelf, near Bratina Island (Victoria Land, Antarctica).
Archer, Stephen David James, Cary, S. Craig, Herbold, Craig W., McDonald, Ian R.   +3 more
core   +2 more sources