Bilin (biochemistry)
Bilins, bilanes or bile pigments are biological pigments formed in many organisms as a metabolic product of certain porphyrins. Bilin (also called bilichrome) was named as a bile pigment of mammals, but can also be found in lower vertebrates, invertebrates, as well as red algae, green plants and cyanobacteria. Bilins can range in color from red, orange, yellow or brown to blue or green.
In chemical terms, bilins are linear arrangements of four pyrrole rings (tetrapyrroles). In human metabolism, bilirubin is a breakdown product of heme. Hydroxymethyl bilane is a major anabolic product, from the biosynthetic reaction of porphobilinogen (PBG) and uroporphyrinogen I synthase (known as porphobilinogen deaminase).
Examples of bilins are found in animals, and phycocyanobilin, the chromophore of the photosynthetic pigment phycocyanin in algae and plants. In plants, bilins also serve as the photopigments of the photoreceptor protein phytochrome. An example of an invertebrate bilin is micromatabilin, which is responsible for the green color of the Green Huntsman Spider, Micrommata virescens.
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Olive-Eyed
by: PollenI'm counting up the tolls
That I have paid for living my life
I'm patchin up the holes
Being gouged by this mass condemnation
But I won't be responsible for the things they've said and done
And I won't be responsible for any battles lost or won
Every person in this world can drop dead except for you
Every person in this world is on their side but you
And wherever you may go
I will go
I've come in from the cold
And I'm so glad that I've found my home
I'm keepin all I hold
It's not often that you get the things you've asked for
But you can't be responsible for the things they'll take away
I won't be opposable
Don't want to fight for every day
The questions you ask me have answers
Plain and clear
I will go and leave forever on the day
They find the boy who loves you half as much as I do
And until that day I will remain and never go away
But I can't be responsible for all the things they've done to you
They won't be held accountable and there's nothing you can do
They depend on the truth
Every person in this world can drop dead except for you
Every person in this world is on their side but you
And wherever you may go
Latest News for: bilane
Ordissimo SA: BILAN semestriel au 31/12/2024 du contrat de liquidité (Ordissimo SA)
Verimatrix : Bilan semestriel du contrat de liquidité (Verimatrix SA)
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