Results 11 to 20 of about 1,498,974 (158)

The Alternative Choice of Constitutive Exons throughout Evolution [PDF]

open access: yes, 2007
Alternative cassette exons are known to originate from two processes exonization of intronic sequences and exon shuffling. Herein, we suggest an additional mechanism by which constitutively spliced exons become alternative cassette exons during evolution.
Adi Doron-Faigenboim   +9 more
core   +5 more sources

Autophagy takes an alternative pathway [PDF]

open access: yesAutophagy, 2010
ATG5 and ATG7 are considered as essential molecules for induction of macroautophagy. However, we found that cells lacking ATG5 or ATG7 can still form autophagosomes/autolysosomes and perform autophagy-mediated protein degradation when subjected to certain stresses.
Shigeomi Shimizu   +2 more
openaire   +3 more sources

The "backdoor pathway" of androgen synthesis in human male sexual development. [PDF]

open access: yes, 2019
Mammalian sex determination (male versus female) is largely controlled by genes, whereas sex differentiation (development of reproductive structures) is largely controlled by hormones. Work in the 20th century indicated that female external anatomy was a
Auchus, Richard J, Miller, Walter L
core   +2 more sources

The Trypanosoma cruzi enzyme TcGPXI is a glycosomal peroxidase and can be linked to trypanothione reduction by glutathione or tryparedoxin. [PDF]

open access: yes, 2002
Trypanosoma cruzi glutathione-dependent peroxidase I (TcGPXI) can reduce fatty acid, phospholipid, and short chain organic hydroperoxides utilizing a novel redox cycle in which enzyme activity is linked to the reduction of trypanothione, a parasite ...
Bromley, Elizabeth V   +5 more
core   +4 more sources

Properdin and factor H: Opposing players on the alternative complement pathway "see-saw" [PDF]

open access: yes, 2013
This article has been made available through the Brunel Open Access Publishing Fund.Properdin and factor H are two key regulatory proteins having opposite functions in the alternative complement pathway.
Abdul-Aziz, M   +5 more
core   +1 more source

Serine biosynthesis with one carbon catabolism represents a novel pathway for ATP generation in cells using alternative glycolysis with zero net ATP production [PDF]

open access: yes, 2011
Recent experimental evidence indicates that some cancer cells have an alternative glycolysis pathway with net zero ATP production, implying that upregulation of glycolysis in these cells may not be related to the generation of ATP.
Alexei Vazquez   +2 more
core   +5 more sources

Arginyltransferase, Its Specificity, Putative Substrates, Bidirectional Promoter, and Splicing-derived Isoforms [PDF]

open access: yes, 2006
Substrates of the N-end rule pathway include proteins with destabilizing N-terminal residues. Three of them, Asp, Glu, and (oxidized) Cys, function through their conjugation to Arg, one of destabilizing N-terminal residues that are recognized directly by
Brower, Christopher S.   +7 more
core   +2 more sources

Searching for pathways involving dressed states in optimal control theory [PDF]

open access: yes, 2011
Selective population of dressed states has been proposed as an alternative control pathway in molecular reaction dynamics [Wollenhaupt et al., J. Photochem. Photobiol. A: Chem., 2006, 180, 248].
Bergmann   +33 more
core   +1 more source

Alternative pathways of T lymphocyte activation. [PDF]

open access: yesThe Journal of experimental medicine, 1978
Data presented in this paper suggest that there may be two alternative pathways which T lymphocytes can use in generating a cytotoxic response to alloantigens in vitro. First, there is the pathway taken when stimulator and responder cells differ by an entire H-2 complex where Ly1+2- helper T lymphocytes respond to I region encoded lymphocyte defined ...
Bach, F H, Alter, B J
openaire   +3 more sources

Natural antisense transcripts with coding capacity in Arabidopsis may have a regulatory role that is not linked to double-stranded RNA degradation [PDF]

open access: yes, 2005
BACKGROUND: Overlapping transcripts in antisense orientation have the potential to form double-stranded RNA (dsRNA), a substrate for a number of different RNA-modification pathways.
Jen, C.H.   +3 more
core   +2 more sources

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