Post-translational modifications of tubulin:

Lysine acetylation

Detyrosylation

Polyglutamylation

Polyglycylation

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#Section 2: General Biology

MoFe protein 

2 pairs of identical subunits (tetramer, nif D & nif K)

A total of MW 180 ~ 235kD

Each subunit has 2 Mo-Fe-S clusters.

Both Fe proteins and MoFe proteins are sensitive to O2. 

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#Section 3: Genetics, Cellular and Molecular Biology

Rab GTPases 

associate with transport vesicles and act as key regulators of vesicle trafficking to and fusion with the appropriate target membrane.

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#Id: 9183

#Section 3: Genetics, Cellular and Molecular Biology

The selection gradient measures the strength of directional selection acting on a quantitative trait.

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#Section 2: General Biology

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#Section 2: General Biology

Three factors are important in maintaining low O2 concentrations in nodules. 

First, entry of O2 into the nodule is controlled by a variable‐permeability barrier in the nodule parenchyma