MYTUTOR SUBJECT ANSWERS

312 views

Explain what the stages of protein folding are and how the protein is held in its 3D shape

Break this question down into the four stages: primary, secondary, tertiary and quarternary and for each one describe the structure and what the non-covelant interactions are that hold the protein together. Make sure your sentences are clear and concise, not waffley!

There are four stages of protein folding, primary, secondary, tertiary and quarternary.

The primary structure is the sequence of amino acids held together by peptide bonds

The secondary structure is the protein beginning to fold up. It can have two types of structure: the alpha helix, a coil shape held by hydrogen bonds in the same direction as the coil. The beta pleated sheet is an S shape pattern, also with hydrogen bonds holding the structure together. The hydrogen bonds are between NH and CO groups on the peptides.

The tertiary structure is the protein folded into its precise 3D structure, relating to the functon. This is held together by a range of non-covelant interactions between side groups, including ionic interations, disuplhide bridges, hydrophobic interactions, Van der Waals forces and hydrogen bonds.

The quarternary structure is when single peptides bond to other peptides, for example in haemoglobin.

Abigail C. A Level Biology tutor, GCSE Chemistry tutor, GCSE Maths tu...

9 months ago

Answered by Abigail, an A Level Biology tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

161 SUBJECT SPECIALISTS

£20 /hr

Idrees A.

Degree: Medicine (Bachelors) - Bristol University

Subjects offered:Biology, Science+ 4 more

Biology
Science
Human Biology
Chemistry
-Personal Statements-
-Medical School Preparation-

“Hi, my name is Idrees and I am a medical student at the University of Bristol. I am a friendly, enthusiastic and approachable person with an unmoveable passion for science and teaching. I have tutored Biology and Chemistry to many GCS...”

£24 /hr

Coral B.

Degree: Palaeontology & Evolution (Masters) - Bristol University

Subjects offered:Biology, Science+ 2 more

Biology
Science
Maths
Chemistry

“Hi! I’m Coral and I’m currently a first year Palaeontology & Evolution student at the University of Bristol. I’ve been a tutor for the past three years, helping younger students of all abilities all the way up to GCSE. During this tim...”

£36 /hr

Hannah S.

Degree: Medicinal Chemistry and Pharmacology (Masters) - Liverpool University

Subjects offered:Biology, English Language+ 3 more

Biology
English Language
Chemistry
-Personal Statements-

“I'm currently studying medicinal chemistry and pharmacology at the University of Liverpool as part of an 'integrated masters' course designed to fast track students interested in a chemistry as a profession or continuing study to a PhD...”

About the author

Abigail C.

Currently unavailable: for new students

Degree: Biosciences (Masters) - Durham University

Subjects offered:Biology, Maths+ 1 more

Biology
Maths
Chemistry

“About me I am studying biological sciences at Durham University. I have always really loved science, and I hope to enthuse others with this and help them to be willing to learn. There were some topics I found challenging but eventua...”

You may also like...

Posts by Abigail

An equilibrium between hydrogen and nitrogen to make ammonia. Explain what would happen to the amount of product if a) pressure was increased b) temperature was increased c) a catalyst was added. Energy change -92KJ/mol

Explain what the stages of protein folding are and how the protein is held in its 3D shape

Make x the subject of the equation y=(2(1+x))/(3x-1)

Other A Level Biology questions

What is meant by the term polygenic inheritance? [2 marks]

How are chloroplasts adapted to their function?

How does speciation occur?

What is the function of the myelin sheath?

View A Level Biology tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok