3.7Types Of Protein Flashcards

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1
Q

What are the main characteristics globular proteins

A

Compact
Water soluble as hydrophilic groups are ok the outside
Spherical

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2
Q

What is insulin

What are some of its characteristic to help carry out its function

A

A globular protein that’s a hormone involved in the regulation of blood glucose concentration
It’s soluble to travel in the bloodstream

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3
Q

What are conjugated proteins

A

Globular protein that contain a non-protein component called a prosthetic group

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4
Q

What proteins are globular proteins

A

Insulin

Conjugated proteins

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5
Q

What proteins are conjugated proteins and what prosthetic group do they contain

A

Haemoglobin snd catalase

Contain a haem group which contains iron II

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6
Q

What is haemoglobin

A

Red oxygen carrying pigment found in the red blood cells

It has 4 subunits which each contain a haem group and the iron in the haem group combines to the oxygen molecule

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7
Q

What is catalase

A

It’s an enzyme that has 4 protein subunits which each contain a haem group
The haem groups allows the catalase to interact with hydrogen peroxide and speed up breakdowns

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8
Q

What are fibrous proteins characteristics

A

They are formed from long insoluble molecules and have a high % of hydrophobic groups
They have a limited and repetitive amino acid sequence giving them organised structures
They are long and strong and don’t fold

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9
Q

What are types of fibrous proteins

A

Collagen
Keratin
Elastin

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10
Q

What is keratin

A

It’s present in hair nails and skin

Contains cysteine giving the protein strong disulfide bonds makingbit insoluble

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11
Q

What is elastin

A

It’s in elastic fibres in walls of blood vessels and alveoli of lungs and give structures the flexibility to expand when needed

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12
Q

What is elastin makes from

A

Tropoelastin which are stretchy molecules

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13
Q

What is collagen

A

A connective tissue found in the skin tendons ligaments and nervous system
It’s made of 3 polypeptides that are wound in a rope like structure giving it flexibility

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