Metabolic map on the catabolism of asparagine and aspartate

Video about functional groups

Carbonyl group

The carbonyl group is characterized by the presence of an oxygen atom covalently linked via a double bond to a carbon atom. Depending on the position within the molecule to which it belongs, it can be called aldehyde group or ketone group. The first concerns the carbonyl groups that are located at an end of the molecule, that is, includes groups that are located on the first or the last carbon in the molecule. The ketone group refers to a carbonyl group which is at an internal position within the molecule. If the carbonyl is an aldehyde group, the molecule name ends with the suffix "al". If it is a ketone, it ends with "one".

Oxygen is more electronegative than carbon, which causes the carbonyl group to present a high polarity. As it is more electronegative, oxygen tends to relocate the electronic cloud, pulling it towards it. Consequently, carbon displays a partial positive charge and oxygen a partial negative charge.
Finally, it should also be noted that the term "carbonyl" can also be applied to carbon monoxide, when acting as a ligand in an inorganic or organometallic complex.
In the analysis of the composition of molecules, the carbonyl group can be identified by infrared spectroscopy (it absorbs between approximately 1600-1900 cm^-1) or nuclear magnetic resonance (about 160-220 ppm).

Music about enzyme catalysis

This music is about enzyme catalysis and is an adaptation made by Dr. Ahern (www.davincipress.com/metabmelodies.html) of the song Close to You.

http://www.mediafire.com/?omzv9utktseeodu

Catalyze
My enzymes
Truly are inclined
To convert
Things they bind
Turn the key
Covalently
Cat-a-lyze
 

How do cells

Regulate these roles?
Allo-ster-ic controls
Two forms, see
States R and T
Mod-u-late
 
Competing inhibition keeps
The substrates from the active site
They raise Km, but leave Vmax and shirk
While the non-competers bind elsewhere
And lift the plot made on Lineweaver-Burk

Other ways
Enzymes can be blocked
When things bind
Then get locked
Stuck not free
Tied to the key
Su-i-cide

Penicillin’s action stops
Peptidoglycan cross-links in
Bacterial cell walls in awesome ways
Beta lactam ring’s reactive site
Starts bonding with D-D-transpeptidase
 
So there are
Several enzyme states
Counteract-ing substrates
Now you see
Blocking the key
Regulates
 
Cat-a-lysts
Have to be controlled
Some get slowed
Put on hold
It's sublime
How the enzymes
(slow) Cat-a-lyze
 
ahhhhhhhhhhhhhhhhhhh - cat-a-lyzeahhhhhhhhhhhhhhhhhhh - cata-
lyzeahhhhhhhhhhhhhhhhhhh - cat-a-lyze

Tattos - Atom (2)

Musica about cellular respiration (2)

Animation about the action of epinephrine on hepatocytes

The liver is a central organ in our metabolism. There are many hormones that act on it, being epinephrine (also called adrenaline) one of them. Here it goes an animation that explain the action of that homone on liver cells.

http://www.mediafire.com/?qrr3tyft7nblzq9

Cartoon abou functional groups