Summary 3.1.1.4 - Proteins

Place) :
Amino acid sequence
polymer of amino acids
-




Uses : -
channels in cell membrane ,
transport/carrie
-



enzymes ,
hormones ,
antibodies ,


peptide
~

STRUCTURE ↓ <carboxyla PEPTIDEBONDS
#O
: :

H
Hell -
C-COOH
-
group
C
form by
amine

'variable
/- I b OH
,
rest of molecule condensation tho


PRIMARY :

Sequence of amino acids
=
polymer
held by peptide bonds
-




SECONDARY Sequence :

of amino acid formed :




into beta pleated sheete n both held by hydrogen bonds
-




I
-
into alpha helix shape &

TERTIARY :

betto pleated sheet or helix folded into 3D shape

held by -disritide
bridges
-




hydrogen bonds
-




Ionic bonds in R
groups
-




QUARTERNARY multiple proteins bound
together
:




GLOBULAR <spherical and soluble) and FIBROUS
(long chains ,
no 30 insoluble
, ,
repetitive sequence , cross
linkages) PROTEIN)
(insulin,haemoglobin ametabolic reactions
(strong e,
Cieratin collagen
,


suitable for structural roles.


Test :



-



bieuret added to sample in Waterbath (MaOH + Cu ,
SOi)
-

it lilas-protein