In maize (Zea mays) leaves, the HC toxin inhibits histone deacetylases to effect changes in host gene expression, presumably those genes involved in defense against C. carbonum.

TLS Online TPP Program

#Id: 7734

#XL - Q Biochemistry

The number of electrons in a neutral atom is equal to the number of protons.

TLS Online TPP Program

#Id: 7733

#XL - Q Biochemistry

Atoms are made of the same three basic particles: protons, neutrons, and electrons.

TLS Online TPP Program

#Id: 8132

#XL - Q Biochemistry

Lipids as pigments in plants and bird feathers.

Birds acquire the pigments that color their feathers red or yellow by eating plant materials that contain carotenoid pigments, such as canthaxanthin and zeaxanthin.

The differences in pigmentation between male and female birds are the result of differences in intestinal uptake and processing of carotenoids.

TLS Online TPP Program

#Id: 8131

#XL - Q Biochemistry

In most mammalian tissues, ubiquinone (also called coenzyme Q) has 10 isoprene units.

Dolichols of animals have 17 to 21 isoprene units (85 to 105 carbon atoms), bacterial dolichols have 11, and those of plants and fungi have 14 to 24.

TLS Online TPP Program

#Id: 8130

#XL - Q Biochemistry

TLS Online TPP Program

#Id: 8129

#XL - Q Biochemistry

Some other biologically active isoprenoid compounds or derivatives.