F
b
R
s
Fibrous
H IS
td
Histidine
H
u
M
Human
I SL
e
Isoleucine
L
e
Leucine
L ip
OX
se Lipooxygenase
M
us
L
Muscles
P E
pt
Peptide
P
l
T
Plants
p
R
t
Proteins
R e
at
Reactions
S e
D
Seeds
S ys
T
System
V
a
L
Valine
V
i
T
Vitamin
23.1 Introduction
Proteins (p
R
t ) are the most abundant organic molecules of the living system (S ys
T ).
The name protein is derived from the Greek word “proteios” meaning holding the
first place. In 1838 the Dutch chemist Mulder used the term p
R
t to denote the high
molecular weight nitrogen-rich and most abundant substances present in animals
and plants (P
l
T ). The body (B
D
Y ) regularly needs nutrients for carrying out original
B
D
Y functions, among these, p
R
t are the most important compounds because they
aid in building (B u
Ld ) cells and tissues for a human(H
u
M ) B
D
Y . A high p
R
t richen
diet is needed for B u
Ld B
D
Y or muscles (M
us
L ). If the B
D
Y deficiencies in fat and
carbohydrates, it creates energy production by using p
R
t as they are requisite for
M
us
L mass B u
Ld M
us
L . It reduces the long polymer chain of p
R
t from the amino acid
(A m
a ) monomer. The A m
a monomers is coupled with the peptide (P E
pt ) bonds
between the amino and carboxyl groups. It is applied in p
R
t in industry and in the
H
u
M B
D
Y . So, an effort produced to review on enzymes and p
R
t and their pharmaceutical application.
23.1.1 Classification of p
R
t
Based on the structure, composition, shape and solubility of A m
a , p
R
t are assorted
into following classes: simple, fibrous (F
b
R
s ), conjugated (C o
Nj
T ) and derived p
R
t .
Simple p
R
t are two types such as (a) Globular p
R
t (Albumins (A L
B
M ), Globulins,
Glutelins, Histones, Globins, Protamines, and Prolamins etc.), (b) F
b
R
s p
R
t
(Collagens, Elastin, and Keratins etc.). The example of C o
Nj
T p
R
t is Nucleo, Glyco,
794
O. P. Panda et al.
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