The earliest pathways for moving around Manhattan Island followed animal and Native American trails across difficult terrain; Broadway still follows one of these routes, which extended northward through the island.
Thus, some of the earliest pathways may have arisen from the Horowitz scheme, some from the semi-enzymatic proposal and later ones from Jensen's enzyme recruitment hypothesis.
The earliest pathway-based approaches followed from Fisher's test, comparing the distributions counts of differentially expressed genes (DEGs) in each pathway with the overall distribution (Khatri and Drghici, 2005).
ORA, often called functional enrichment analysis, is the earliest pathway-based analysis approach to identify an over-represented pathway with a list of susceptible genes obtained by using traditional statistical tests for contingency tables (e.g., Fisher's exact test, see Table 1) [32].
The earliest pathways overrepresented in genes specifically up-regulated at 6-h time point after surgery include snare interactions in vesicular transport and basal transcription factors.
As such it is an essential cofactor in two enzymes in the methanogenic branch of the acetyl-coenzyme A pathway, considered to be one of the earliest pathways at the origin of life [ 63, 64].
Importantly, the steady-state levels of the two terminal enzyme transcripts (BAPT and DBTNBT) are much lower than transcripts of early pathway steps.
Studies using molecular-genetic gain- and loss-of-function reagents have characterized many of the steps involved in this early pathway in Xenopus.
The early pathway enzyme genes GGPPS, TASY, and T5αH are up-regulated by MJ elicitation within 6 h and continue through 24 h before their abundances decrease.
PrPC molecules were delayed in their transit along the early pathway of the secretory compartment, however, they did not aggregate, and were not resistant to Proteinase K (PK) or become detergent-insoluble.
White petals fail to produce the stress responsive flavonoid intermediates in the anthocyanin biosynthetic pathway (ABP), suggesting an early pathway blockage.
