A characteristic feature of apoptosis is the cumulative effects of biochemical and morphological changes which include cell-cycle arrest, halt DNA repair and homeostasis, inactivate apoptosis inhibitor proteins, and facilitate ultra-structural modifications, breakdown of cellular contents, and marking for death [96,102].
The different protein spots might come from post translation modification or breakdown of OmpA proteins, which has been observed in many other bacteria genus.
Among clostridial genomes sequenced to date, C. phytofermentans has the highest number of genes encoding enzymes for the modification and breakdown of complex carbohydrates.
Reactive oxygen and nitrogen species produced from the immune response and during cellular respiration (occasions of oxidative stress) initiate the modification and breakdown of cellular macromolecules, including polyunsaturated lipids and DNA.
The morphological changes in apoptotic cells are accompanied by several biochemical modifications, including DNA breakdown, protein cross-linking and protein cleavage which lead to the phagocytic recognition of apoptotic cells by adjacent cells [ 25].
For example, among angiosperms it is known that modifications to, or breakdown of, the RdDM pathway can lead to repeat amplification, as shown, for example, by the inactivity of an orthologue of RDR2 in Z. mays resulting in enhanced transposon activity (Woodhouse et al. 2006).
Equal volumes of urine samples from the 10 individuals were pooled, and protease and phosphatase inhibitors (Roche, Germany) were added to prevent protein enzymatic breakdown or modification prior to processing.
Other cell surface-modifying enzymes upregulated in the necrotrophic phase are triacylglycerol lipase precursors and a cutinase suggesting lipid breakdown and modification of the protective surfaces of the plant cells.
In addition to MMPs, advanced glycemic end products (AGEs) are prominent candidates possibly responsible for a disturbance in collagen breakdown and chemical modification of collagen [20], [21].
Carbohydrate-active enzymes (CAZymes) are responsible for the breakdown, biosynthesis or modification of glycoconjugates, oligo- and polysaccharides.
