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Biochemistry > Protein Classification Based on Chemical Composition > Flashcards

Protein Classification Based on Chemical Composition Flashcards

1
Q

2 Types of Protein

A
  1. Simple Protein

2. Conjugated Protein

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2
Q

6 Types of Conjugated Proteins

A
  1. Nucleoprotein
  2. Chromoprotein
  3. Lipoprotein
  4. Mucoprotein
  5. Phosphoprotein
  6. Metalloproteins
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3
Q

5 Types of Simple Proteins

A
  1. Albumins
  2. Globulins
  3. Glutelins
  4. Prolamins
  5. Scleroproteins or Albuminoids
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4
Q

It is made up of amino acid subunits joined together by peptide bonds?
In hydrolysis they yield only the amino acids and occasional small carbohydrate compounds?

A

Simple Proteins

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5
Q

Composed of simple proteins include materials such as carbohydrates, lipids, bound metal ions, nonprotein substance (prosthetic group) and other organic groups.

A

Conjugated Proteins

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6
Q

READ: Albumins

A

• These are soluble in water and diluted in aqueous solution.
• Can be coagulated by heat and precipitated from solution using saturated ammonium sulfate.
coagulated means it can be form as solid

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7
Q

What do you called the albumin in egg?

A

Egg albumin

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8
Q

What do you called the albumin in milk?

A

Lactoalbumin or lactalbumin

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9
Q

What do you called the albumin in blood?

A

Serum albumin

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10
Q

What do you called the albumin in muscles?

A

Myogen

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11
Q

What do you called the albumin in peas?

A

Legumin

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12
Q

READ: Globulins

A
  • These are insoluble in water but soluble in diluted salt solution.
  • It can coagulated by heat, and precipitate using half salt saturated solution ammonium sulfate.
  • Mostly it found in nuts.
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13
Q

What do you called the globulin in egg yolk?

A

Ovoglobulin

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14
Q

What do you called the globulin in muscles?

A

Myosin

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15
Q

What do you called the globulin in beans?

A

Phascolin

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16
Q

What do you called the globulin in almonds?

A

Amandin

17
Q

What do you called the globulin in peanuts?

A

Arachin

18
Q

READ: Glutelins

A
  • These are soluble in diluted solution of acid and alkalies (bases).
  • it is insoluble in water and neutral solvents
  • It only occur in plants.
19
Q

What do you called the glutelins in wheat?

A

Glutenin

20
Q

What do you called the glutelins in rice?

A

Oryzenin

21
Q

READ: Scleroproteins or Albuminoids

A
  • These are insoluble in all neutral solvents, dilute acid and alkalies (bases).
  • Entirely in animal proteins and constituents of exoskeletal structure connecting ang supporting fibrous tissues.
22
Q

What do you called the albumin in hair, horn and nails?

A

Keratin

23
Q

What do you called the albumin in bones?

A

Collagen

24
Q

What do you called the albumin in silk?

A

Fibroin and Sericin

25
Q

What do you called the albumin in our connective tissues?

A

Elastin

26
Q

READ: Prolamins

A
  • It is soluble in 70-80% of ROH
  • But insoluble in absolute ROH, in water, and neutral solvents.
  • Rich in Proline upon hydrolysis.
  • Usually found in plants - mostly seeds
27
Q

What do you called the prolamin in corn?

A

Zein

28
Q

What do you called the prolamin in wheat?

A

Gliadine

29
Q

What do you called the prolamin in barley?

A

Hordein

30
Q

What do you called the prolamin in kafir corn?

A

Kafirin

31
Q

READ: Nucleoprotein

A
  • Composed with simple protein in salt combination with nucleic acids (prosthetic group)
  • Most abundant in plant and animal tissues that have a large proportion to nuclear materials.
  • Examples are yeast, asparagus tips, thymes, and other glandular organs such as organ and sperm.
32
Q

READ: Mucoprotein or Mucoids

A
  • Simple protein in combination with mucopolysaccharides.
  • Present in tendons, bones, cartillages, and umbilical cord.
  • Also present in all animal mucins and blood-group substances.
33
Q

READ: Chromoproteins

A
  • Simple protein in combination with colored prosthetic group. (Chroma means color)
  • Hemoglobin - a respiratory proteins in which the prosthetic group in the iron-containing complex, heme. It is the iron-containing oxygen-transport metalloprotein in the red blood cells.
  • Cytochromes - prosthetic group is heme
  • Flavoproteins - prosthetic group is riboflavin.
  • Retins - Prosthetic group is carotenoid pigment (in carrots)
  • Catalase - it is enzyme that decomposes hydrogen peroxide (H2O2)
34
Q

READ: Prosphoprotein

A
  • Simple protein combined with phosphoric acid

* Examples are casein from milk and vitellin from egg yolk.

35
Q

READ: Metalloprotein

A 
• Enzyme protein containing metallic elements
• Examples are:
Fe - ferretin
Zn - alcohol dehydrogenase
Ca - calmodulin
Mo - dinitrogenase
Cu - plastocyatin
36
Q

READ: Lipoprotein

A
  • Proteins formed by combination of proteins with lipids such as lecithin and cephalin
  • Soluble in organic solvents but insoluble in water.
  • Phospholipid protein complex (lecithoprotein) - found in animal and plant such as milk, blood, cell nuclei, egg yolk etc.
  • Also found in bacterial antigens and viruses

Biochemistry (12 decks)

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