Results 11 to 20 of about 2,586 (153)

Metabolic activity and community structure of prokaryotes associated with particles in the twilight zone of the South China Sea [PDF]

open access: yesFrontiers in Microbiology, 2022
The twilight zone is an important depth of the ocean where particulate organic matter (POM) remineralization takes place, and prokaryotes contribute to more than 70% of the estimated remineralization.
Hao Liu   +8 more
doaj   +4 more sources

What the geological past can tell us about the future of the ocean’s twilight zone [PDF]

open access: yesNature Communications, 2023
Paleontological reconstructions of plankton community structure during warm periods of the Cenozoic (last 66 million years) reveal that deep-dwelling ‘twilight zone’ (200–1000 m) plankton were less abundant and diverse, and lived much closer to the ...
Katherine A. Crichton   +6 more
doaj   +2 more sources

EnsembleFam: towards more accurate protein family prediction in the twilight zone [PDF]

open access: yesBMC Bioinformatics, 2022
Background Current protein family modeling methods like profile Hidden Markov Model (pHMM), k-mer based methods, and deep learning-based methods do not provide very accurate protein function prediction for proteins in the twilight zone, due to low ...
Mohammad Neamul Kabir, Limsoon Wong
doaj   +2 more sources

Bacterial distribution in Twilight zone of the Indian sector of Southern Ocean: V3- V4 rDNA hypervariable region data [PDF]

open access: yesData in Brief, 2023
Twilight zones in oceans represent the oceanic waters between 200 m to 1000 m in depth, wherein sunlight is diffused and intensity is
Alok K. Sinha   +2 more
doaj   +2 more sources

Biological function in the twilight zone of sequence conservation [PDF]

open access: yesBMC Biology, 2017
Strong DNA conservation among divergent species is an indicator of enduring functionality. With weaker sequence conservation we enter a vast ‘twilight zone’ in which sequence subject to transient or lower constraint cannot be distinguished easily from ...
Chris P. Ponting
doaj   +2 more sources

Community differences and potential function along the particle size spectrum of microbes in the twilight zone [PDF]

open access: yesMicrobiome
Background The twilight zone, which extends from the base of the euphotic zone to a depth of 1000 m, is the major area of particulate organic carbon (POC) remineralization in the ocean. However, little is known about the microbial community and metabolic
Yue Zhang, Hongbin Liu, Hongmei Jing
doaj   +2 more sources

Science in the Twilight Zone—Rebuttal

open access: yesIssues in Science and Technology Librarianship, 1998
The author responds to articles in this issue by Rob Kirby, Emily R. Mobley, and David Flaxbart.
Albert Henderson
doaj   +2 more sources

Fine-tuning structural RNA alignments in the twilight zone [PDF]

open access: yesBMC Bioinformatics, 2010
Background A widely used method to find conserved secondary structure in RNA is to first construct a multiple sequence alignment, and then fold the alignment, optimizing a score based on thermodynamics and covariance.
Schirmer Stefanie   +2 more
doaj   +2 more sources

Evolutionary distances in the twilight zone--a rational kernel approach. [PDF]

open access: yesPLoS ONE, 2010
Phylogenetic tree reconstruction is traditionally based on multiple sequence alignments (MSAs) and heavily depends on the validity of this information bottleneck. With increasing sequence divergence, the quality of MSAs decays quickly.
Roland F Schwarz   +6 more
doaj   +2 more sources

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