Zinc in Biological Definition

Semen

... ejaculation can contain up to 5 m g of zinc . zinc serves to help to stabilize the DNA containing chromatin in the sperm cells. A zinc deficiency may result in lowered fertility ...

Signal transduction

... EEEE FFFF -C where CCCC is the DNA-binding domain that contains zinc fingers , and EEEE the ligand-binding domain. The latter is also ... , used for communication with the translational apparatus. The zinc fingers in the DNA-binding domain stabilize DNA binding by holding contact ...

Alcohol

... hydroxyl group is replaced by a chlorine atom. If primary or secondary alcohols are to be reacted with hydrochloric acid , an activator such as zinc chloride is needed. Alternatively the conversion may be performed directly using thionyl chloride . [1] Alcohols may likewise be converted ...

Alpha helix

... lysine . α helices have particular significance in DNA binding motifs, including helix-turn-helix motifs, leucine zipper motifs and zinc finger motifs. This is because of the structural coincidence of the α helix diameter of 12 being the same as the width of the major groove in ...

Bacterium

... nitrogen , sulfur , phosphorus , vitamins and metallic elements such as sodium , potassium , calcium , magnesium , manganese , iron , zinc , cobalt , copper and nickel for normal growth. For some species, additional trace elements such as selenium , tungsten , vanadium or ...

Bacterium

... nitrogen , sulfur , phosphorus , vitamins and metallic elements such as sodium , potassium , calcium , magnesium , manganese , iron , zinc , cobalt , copper and nickel for normal growth. For some species, additional trace elements such as selenium , tungsten , vanadium or ...

Pigment

... White ) Ultramarine (Ultramarine Green Shade , French Ultramarine ) Umber (Raw Umber , Burnt Umber ) Venetian Red Yellow ochre zinc white External links Pigments through the ages Earliest evidence of art found ...