Globular vs Fibrous Proteins

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  • Created by: Aleena
  • Created on: 11-04-19 17:48
Differences in Primary Structure?
Globular-don't follow regular patterns Fibrous-regular,repetitve sequence
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Difference in Secondary?
Globular-more complex due to complex 1st sequence Fibrous-simple
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Difference in Roles?
Globular-Metabolic Fibrous-Structural
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Difference in Properties?
Globular- soluble + more sensitive to pH/temp (as its metabolic, it needs to react) Fibrous- insoluble + less sensitive as its structural protein, so needs to withstand things
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Why are Globular proteins soluble?
the hydrophobic R-groups are on the inside & hydrophillic R-groups are on the outside
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Difference in Shape?
Globular-compact, ball-like shape Fibrous- long,rope-like shape
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Enzymes are globular or fibrous?
Globular because it allows them to have a specificaly shaped active site for the substrate to fit into
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Collagen and Keratin are globular or fibrous?
Fibrous
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Haemogloblin is G or F?
G
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Number of polypeptide chains in haemogloblin?
4
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Number of polypeptide chains in collagen?
3
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Helical Structure of Haemoglobin & Collagen?
Haemogloblin:right-handed alpha helix Collagen:left-handed alpha helix
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Types of amino acids in Haemo. and Collagen?
H: most of the 20 different amino acids present C: 3 amino acids e.g glycine
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Prosthetic Group?
Non-protein part of a protein molecule that is permanently attached to it and is important for the functioning of the protein
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Prosthetic Group of Haemoglobin?
Haem group-contains iron, enables oxygen transport
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Difference in role of Haemoglobin & Collagen?
H: Transport of Oxygen C: provides strength in many areas of the body e.g artery walls,cartilage,elastcity of skin
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Conjugated Protein?
A globular protein with a prosthetic group e.g Haemoglobin
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Other cards in this set

Card 2

Front

Difference in Secondary?

Back

Globular-more complex due to complex 1st sequence Fibrous-simple

Card 3

Front

Difference in Roles?

Back

Preview of the front of card 3

Card 4

Front

Difference in Properties?

Back

Preview of the front of card 4

Card 5

Front

Why are Globular proteins soluble?

Back

Preview of the front of card 5
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