Posted by:
ZFelicien
at Fri Oct 3 10:41:23 2008 [ Email Message ] [ Show All Posts by ZFelicien ]
Albino (T-) Amelanistic:
Amelanism (Tyrosinase negative) is a congenital mutation that is the result of an amino acid disorder that results (in) “Hypopigmentation” of systematic (organs) and ocular (eyes) tissue.
The pigmentation in cells is dependent on the cell’s ability to manufacture and isolate melanin. Melanin is synthesized from the amino acid tyrosine by the enzyme tyrosinase. This process occurs within organelles called melanosomes which are located in cells called melanocytes. These melanocytes are responsible for the pigmentation of cells (for example skin and eyes cells)
In Albinism (T-) tyrosinase is not present, the amino acid tyrosinase can not be synthesized therefore melanin is absent. A total lack of dark pigment is the result, leaving dark areas white and red pupils.
Lavender Amelanistic (T+):
In the "Lavender" (Tyrosinase positive) mutation the Tyrosinase enzyme is present but the cells are unable to isolate the synthesized melanin in the melanosomes. This results in lavender/brown pigmentation as well as ruby red pupils.
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RE: Brooks Genes - ZFelicien, Fri Oct 3 10:41:23 2008