Mechanisms of endosperm initiation

Effect of incipient gullying mechanisms on topographic threshold conditions for gully initiation in southwestern Iran

V(D)J recombination: mechanisms of initiation.

V(D)J recombination assembles immunoglobulin and T cell receptor genes during lymphocyte development through a series of carefully orchestrated DNA breakage and rejoining events. DNA cleavage requires a series of protein-DNA complexes containing the RAG1 and RAG2 proteins and recombination signals that flank the recombining gene segments. In this review, we discuss recent advances in our unders...

Initiation of the blood coagulation mechanisms.

IN the physiology of hemostasis the coagulation of the blood is one of the dominant events. When the complicated chemical interactions fail, persistent bleeding and even a fatal outcome may be expected. Since blood may remain fluid in the blood vessels for a lifetime, but nevertheless clot in a few minutes when shed, it is consequential to ask what initiates the complicated chemical interaction...

Molecular mechanisms of translation initiation in eukaryotes.

Translation initiation is a complex process in which initiator tRNA, 40S, and 60S ribosomal subunits are assembled by eukaryotic initiation factors (eIFs) into an 80S ribosome at the initiation codon of mRNA. The cap-binding complex eIF4F and the factors eIF4A and eIF4B are required for binding of 43S complexes (comprising a 40S subunit, eIF2/GTP/Met-tRNAi and eIF3) to the 5' end of capped mRNA...

The four mechanisms of dental resorption initiation.

The aim of this study is to present a classification with a clinical application for root resorption, so that diagnosis will be more objective and immediately linked to the source of the problem, leading the clinician to automatically develop the likely treatment plan with a precise prognosis. With this purpose, we suggest putting together all diagnosed dental resorptions into one of these four...