This gene controls the operator gene in cooperation with a chemical substance called inducer present in the cytoplasm. A regulator gene is not necessarily adjacent to the operator gene which it controls. The regulator gene codes for and produces a protein called repressor.
The Gram-positive bacteria include staphylococci (staph), streptococci (strep), pneumococci, and the bacterium responsible for diphtheria (Cornynebacterium diphtheriae) and anthrax (Bacillus anthracis). The Danish bacteriologist J.M.C. Gram (1853-1938) devised a method of staining bacteria using a dye called crystal (gentian) violet. Gram's method helps distinguish between different types of bacteria. The gram-staining characteristics of bacteria are denoted as positive or negative, depending upon whether the bacteria take up and retain the crystal violet stain or not.
This Unknown consisted of one gram positive and one gram negative. The Unknown in #102 identified as Unknown A was classified as gram positive cocci. After close observations and multiple biochemical tests were performed Unknown A was identified to be Staphylococcus epidermidis.taphylococcus epidermidis, is a gram positive, and is part of our normal flora. This bacterium is one of thirty-three species belonging to the genus Staphylococcus (Staphylococcus) .