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Simple explanation of the mechanisms of apoptosis triggered by internal signals (bcl-2), along the caspase-9, caspase-3 and caspase-7 pathway; and by external signals (FAS and TNF), along the caspase 8 pathway. Accessed 25 March 2007. Apoptosis & Caspase 7, PMAP-animation; Caspases at the U.S. National Library of Medicine Medical Subject ...
Simple explanation of the mechanisms of apoptosis triggered by internal signals (bcl-2), along the caspase-9, caspase-3 and caspase-7 pathway; and by external signals (FAS and TNF), along the caspase 8 pathway. Accessed 25 March 2007. WikiPathways – Apoptosis pathway Archived 2008-09-16 at the Wayback Machine "Finding Cancer's Self-Destruct ...
Caspase-3 shares many of the typical characteristics common to all currently-known caspases. For example, its active site contains a cysteine residue (Cys-163) and histidine residue (His-121) that stabilize the peptide bond cleavage of a protein sequence to the carboxy-terminal side of an aspartic acid when it is part of a particular 4-amino acid sequence.
Caspase-9 is an enzyme that in humans is encoded by the CASP9 gene.It is an initiator caspase, [5] critical to the apoptotic pathway found in many tissues. [6] Caspase-9 homologs have been identified in all mammals for which they are known to exist, such as Mus musculus and Pan troglodytes.
Caspase-7, apoptosis-related cysteine peptidase, also known as CASP7, is a human protein encoded by the CASP7 gene. CASP7 orthologs [ 5 ] have been identified in nearly all mammals for which complete genome data are available.
Signaling pathway of TNF-R1. Dashed grey lines represent multiple steps. The death-inducing signaling complex (DISC) is a multi-protein complex formed by members of the death receptor family of apoptosis-inducing cellular receptors. [1] A typical example is FasR, which forms the DISC upon trimerization as a result of its ligand binding.
Moreover, the biochemical form of caspase-8 differed in the two pathways. For the death pathway, the caspase-8 zymogen is cleaved into subunits that assemble to form the mature, highly active caspase heterotetramer whereas for the activation pathway, the zymogen appears to remain intact perhaps to limit its proteolytic function but enhance its ...
Apoptosis inducing factor is involved in initiating a caspase-independent pathway of apoptosis (positive intrinsic regulator of apoptosis) by causing DNA fragmentation and chromatin condensation. Apoptosis inducing factor is a flavoprotein. [2] It also acts as an NADH oxidase. Another AIF function is to regulate the permeability of the ...
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