Results 51 to 60 of about 8,590,312 (311)

Structural and biochemical analysis of a B12 superbinder

open access: yesFEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices   +3 more
wiley   +1 more source

GESTATION LENGTH OF KARI SHEEP [PDF]

open access: yes, 2008
Previously, the concept of a gestation period of sheep shorter than 121 days was unheard of in the field of sheep biology. Our findings during a farmers’ survey in the Lotkho area of Chitral, Pakistan, revealed that the sheep native to the region,
Sohail Ahmad
core  

Length-weight relationship and diet of the catfish Cambeva guareiensis (Siluriformes; Trichomycteridae)

open access: yes, 2021
: The length-weight relationship (LWR) and diet of a small trichomycterid catfish, Cambeva guareiensis, was studied based on 58 specimens captured in Corrente stream, Guareí River basin, São Paulo, Brazil.
Carolina V. Silva (12658652)   +6 more
core   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

Sex-Specific Vulnerability of Fish to Dredging in the Mediterranean Coastal Lagoon (Lake Manzala, Egypt)

open access: yesAquatic Sciences and Engineering
Lagoon dredging disrupts aquatic ecosystems and fish populations. A study in Lake Manzala, Egypt, assessed these impacts by analyzing 2616 fish across ten species.
Azza El-ganainy   +2 more
doaj   +1 more source

Some Growth Characteristics of Barbus cyclolepis Heckel, 1837 and Gobio bulgaricus Drensky, 1926 (Teleostei) Species Living in Karasu Stream (Istanbul)

open access: yesTurkish Journal of Bioscience and Collections, 2021
Objective: In this study, some growth characteristics of Barbus cyclolepis Heckel, 1837 and Gobio bulgaricus Drensky, 1926 species living in Karasu Stream, were investigated. Materials and Methods: Sampling was carried out seasonal (August 2017, November
Çiğdem Çelik, Müfit Özuluğ
doaj   +1 more source

The heterodimeric amino acid transporters (HAT) of the SLC7/SLC3 family: A structure−function relationships and relevance to human pathology

open access: yesFEBS Letters, EarlyView.
Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise   +5 more
wiley   +1 more source

Iterative Construction of Reversible Variable-Length Codes and Variable-Length Error-Correcting Codes

open access: yes, 2004
We propose a generic algorithm for the construction of efficient reversible variable-length codes (RVLCs) and variable-length error-correcting (VLEC) codes, which optimizes the codeword length distribution.
Wang, J., Yang, L-L., Hanzo, L.
core   +1 more source

Growth of the Anchovy Anchoa tricolor in a brazilian subtropical estuary

open access: yesAnais da Academia Brasileira de Ciências, 2018
This study aimed to describe the growth parameters of Anchoa tricolor in a subtropical estuary. From August 2010 to July 2011, 10.009 specimens of the anchovy Anchoa tricolor, mean total length 4.2 cm (±1.45), were captured in the intertidal region of ...
BARBARA M. DE CARVALHO   +2 more
doaj   +1 more source

Leucine‐rich glioma inactivated 1 (LGI1) is a ganglioside‐binding protein

open access: yesFEBS Letters, EarlyView.
Neuronal hyperexcitability associated with a decrease/absence of the extracellular protein LGI1 has been suggested to be primarily due to the downregulation of Kv1 channel expression. The molecular mechanisms underlying this decrease have not yet been elucidated.
Kévin Debreux   +7 more
wiley   +1 more source

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