Here we suggest a possible evolutionary mechanism enabling fixation of toxin gene duplicates upon speciation.
Darkness The dark phase should take place in total darkness, and the fixation lights should be dimmed to the minimum necessary to enable fixation.
This trait can be used as an advanced breeding tool in agriculture since it would enable fixation of hybrid vigor and seed propagation of desirable genotypes [ 4- 7].
Unlike other mycobacteria that can grow with CO as the sole carbon source, M. tb lacks ribulose-bisphosphate carboxylase (RuBisCO), an enzyme found in plants enabling fixation of carbon dioxide.
It enables the fixation of amine-terminated molecules with high degrees of derivatization (∼700 pmol/cm2), without inducing modification of the membrane morphology nor cytotoxicity.
The GlcD protein helps protect the Calvin cycle by converting two molecules of 2PG into one 3-phosphoglycarate (3PGA) molecule (the product of RubisCO's carboxylase activity), and thus enables Ci fixation to proceed.
Examples include nitrogenase, which enables the fixation of nitrogen, and hemoglobin, which enables the transport of oxygen.
The present results suggest that a bisphosphonate coating enables metaphyseal fixation similar to that of hydroxyapatite coatings, with no difference from uncoated pins in cortical bone.
In addition, the stem and sleeve have various combinations and independent reaming in the proximal metaphyseal region of the femur and the diaphyseal region enables robust fixation with respect to various intramedullary canal shapes.
This finding may have significant consequences since it enables sulcus fixation of the original IOL model selected for intracapsular implantation through the existing wound instead of switching to another backup IOLs demanding wound enlargement.
