Results 121 to 130 of about 2,703,759 (384)

Tonic signaling of the B‐cell antigen‐specific receptor is a common functional hallmark in chronic lymphocytic leukemia cell phosphoproteomes at early disease stages

open access: yesMolecular Oncology, EarlyView.
B‐cell chronic lymphocytic leukemia (B‐CLL) and monoclonal B‐cell lymphocytosis (MBL) show altered proteomes and phosphoproteomes, analyzed using mass spectrometry, protein microarrays, and western blotting. Identifying 2970 proteins and 316 phosphoproteins, including 55 novel phosphopeptides, we reveal BCR and NF‐kβ/STAT3 signaling in disease ...
Paula Díez   +17 more
wiley   +1 more source

Comprehensive Mapping of Cyclotides from Viola philippica by Using Mass Spectrometry-Based Strategy

open access: yesMolecules
Cyclotides are plant cyclic peptides with exceptional stability and diverse bioactivity, making them promising candidates for biomedical applications. Therefore, the study of cyclotides has attracted increasing attention in recent years.
Liyan Yu   +6 more
doaj   +1 more source

Datasets: Sensitivity and protein digestion course of proteomic Filter Aided Sample Preparation

open access: yes, 2019
Sensitivity of FASP was tested using SDS lysates from HeLa cells and mouse brain. Peptides were analyzed using a QExactive HF-X instrument. Whole cell lysates of Hela cells were processed with FASP using single or double, consecutive or successive ...
Wisniewski, J., Zettl, K.
core   +1 more source

The melanocortin receptors and their accessory proteins. [PDF]

open access: yes, 2013
The five melanocortin receptors (MCRs) named MC1R-MC5R have diverse physiological roles encompassing pigmentation, steroidogenesis, energy homeostasis and feeding behavior as well as exocrine function.
Chan, LF   +3 more
core   +2 more sources

Comprehensive identification of peptides in tandem mass spectra using an efficient open search engine

open access: yesNature Biotechnology, 2018
We present a sequence-tag-based search engine, Open-pFind, to identify peptides in an ultra-large search space that includes coeluting peptides, unexpected modifications and digestions.
Hao Chi   +18 more
semanticscholar   +1 more source

Aberrant expression of nuclear prothymosin α contributes to epithelial‐mesenchymal transition in lung cancer

open access: yesMolecular Oncology, EarlyView.
Nuclear prothymosin α inhibits epithelial‐mesenchymal transition (EMT) in lung cancer by increasing Smad7 acetylation and competing with Smad2 for binding to SNAI1, TWIST1, and ZEB1 promoters. In early‐stage cancer, ProT suppresses TGF‐β‐induced EMT, while its loss in the nucleus in late‐stage cancer leads to enhanced EMT and poor prognosis.
Liyun Chen   +12 more
wiley   +1 more source

First Generic Teriparatide: Structural and Biological Sameness to Its Reference Medicinal Product

open access: yesPharmaceutics
Teriparatide is an anabolic peptide drug indicated for the treatment of osteoporosis. Recombinant teriparatide was first approved in 2002 and has since been followed by patent-free alternatives under biosimilar or hybrid regulatory application.
Jimena Fernández-Carneado   +11 more
doaj   +1 more source

Determination of ADP/ATP translocase isoform ratios in malignancy and cellular senescence

open access: yesMolecular Oncology, EarlyView.
The individual functions of three isoforms exchanging ADP and ATP (ADP/ATP translocases; ANTs) on the mitochondrial membrane remain unclear. We developed a method for quantitatively differentiating highly similar human ANT1, ANT2, and ANT3 using parallel reaction monitoring. This method allowed us to assess changes in translocase levels during cellular
Zuzana Liblova   +18 more
wiley   +1 more source

Crystal structure of N-{N-[N-acetyl-(S)-leucyl]-(S)-leucyl}norleucinal (ALLN), an inhibitor of proteasome

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The title compound, C20H37N3O4, also known by the acronym ALLN, is a tripeptidic inhibitor of the proteolytic activity of the proteasomes, enzyme complexes implicated in several neurodegenerative diseases and other disorders, including cancer.
Andrzej Czerwinski   +3 more
doaj   +1 more source

Power and limitations of electrophoretic separations in proteomics strategies [PDF]

open access: yes, 2009
Proteomics can be defined as the large-scale analysis of proteins. Due to the complexity of biological systems, it is required to concatenate various separation techniques prior to mass spectrometry.
Aebersold   +225 more
core   +3 more sources

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