In practice, engineers and managers have to make choices on the type, quality, and costs of the safety solutions available within the constraints imposed by the essential safety requirements.
Nevertheless, such cases can increase the evolvability of the pigmentary system because it releases it from functional constraints imposed by other essential functions of the ancestral gene.
COI1 proteins were observed to be highly conserved, confirming the high degree of COI1 conservation during the evolution, which reflects the selective pressure imposed by the essential functions of COI1 in plants.
If we have for all essential reactions i∈ Ψ, then the optimal (i.e. maximum) capability τ* is given by (6) Therefore, increasing the maximum value of the objective τ* requires the relaxation of the upper bound imposed by the essential reactions on the objective τ.
However, because the paralog that keeps the pigmentation function will be released from functional constraints imposed by other essential functions present in the ancestral gene, the duplication still might facilitate evolution of pigmentation by specializing one of the paralogs for the pigmentation function (Braasch et al. 2008).
Four of the five Sal-contacting residues in the RNAP BH-HN are conserved from bacterial RNAP to human RNAP (β′ residues 778, 779, 782, and 785), presumably reflecting constraints on sequence variation imposed by the functionally essential, conformationally dynamic, BH-HN.
These results suggested that both hydrophobicity and folding imposed by this second disulfide bond were essential for antilisterial activity of the C-terminal hydrophobic peptide (Bhugaloo-Vial et al., 1999).
The document takes into account the special requirements imposed by the medical environment and by the essential contribution of the medical laboratory service to patient care.
Moreover, in line with their dual role, they must achieve congruence between the goals of subordinates (whose commitment is essential) and the goals imposed by superiors (whose approval they seek).
We stress that in-depth exploration of the impacts imposed by biofilm in MD, FO and PRO systems is essential before developing new approaches for biofouling mitigation.
