Despite the extremely narrow range of substances that can be used by methanogens, methane production is very common during the anaerobic decomposition of many organic materials, including cellulose, starch, proteins, amino acids, fats, alcohols, and most other substrates.
It can be deduced from Figure 9 that cells growing with acetate are probably in an overreduced state, which is unexpected because the amount of reduction equivalents that can be derived from this carbon source should be lower than from most other substrates.
In particular, the species F. proliferatum, F. oxysporum, A. fumigatus, Penicillium expansum, Mucor hiemalis, Rhizoctonia cerealis, S. homeocarpa, Cylindrocarpon didymum, T. viride, Macrophoma phaseolina and Penicillium sp. had activities greater than two standard deviations from the mean for at least one of the eight substrates tested and also had high activity on most other substrates.
Several species of Fusarium (Fusarium sp., F. acuminatum, F. avenaceum, F. incarnatum, F. graminearum, F. crookwellense, F. moniliforme, F. culmorum, F. compactum, F. proliferatum and F. oxysporum) clustered together and were highly active on grass cell walls and xylans, as well as being higher than average on most other substrates.
(i) The presence of the guiding bar in TR1 allows for the use of only path A, and this path allows only the oxidized C-terminal redox center to approach the N-terminal redox center for reduction to the exclusion of most other substrates.
370, 116 127], restricts the motion of the C-terminal tail containing the C-terminal Gly-Cys-Sec-Gly, redox active tetrapeptide so that only this C-terminal redox center can be reduced by the N-terminal redox center, with the exclusion of most other substrates.
IDE degrades several other intermediate-sized peptides, including atrial natriuric peptide, glucagon, and the amyloid β-protein (Aβ) [11]; however, unlike insulin, most other IDE substrates are known to be hydrolyzed by multiple proteases.
However, the physiological significance of γ-secretase-mediated cleavage events in most of the other substrates remains to be clarified.
Among the other substrates, the most abundant was AKG (550 μM), which was ∼3 fold higher than 3PG.
This is in direct contrast to the very narrow range of substrates recognised by most other Type I systems.
Bone metastatic 4T1.2 cells similarly adhered most avidly to vitronectin but poorly to other substrates, whereas 4T1.13 cells showed moderate binding to collagen IV and vitronectin.
