Describe how an amino acid forms a polypeptide.

Describe how an amino acid forms a polypeptide.

Q: Describe the structure of an amino acid and the formation of a peptide bond.

A. Proteins are made up of organic molecules called amino acids. There are thousands of different proteins with diverse functions: storage, transport, structural support, cellular communication, enzymes and hormones.

However, all these proteins are constructed from the same set of 20 amino acids, linked together in polymers.

The amino acids in a protein are bonded to each other with peptide bonds - hence the term for a polymer of amino acids is a polypeptide.

There are 20 different amino acids, and they all share the same general structure. In the centre of the amino acid is an assymetric carbon atom called the alpha carbon. This carbon is covalently bonded to four different groups: an amino group, a carboxyl group, a hydrogen atom, and a variable group symbolised by R.

The R group (also known as a side chain) is different for each of the 20 amino acids. For example the amino acid Alanine has a methyl group at this position, whereas Glycine has a hydrogen atom.

The amino group of one amino acid will bond to the carboxyl group of the next amino acid. This bond is called a peptide bond and it is formed by a dehydration reaction, where a water molecule is removed.

Many amino acids joined by peptide bonds form a polypeptide.

____________________

describe how an amino acid forms a polypeptide
two amino acids joined together by a peptide bond is called this
amino acid structure
peptide bond structure
polypeptide chain
what is a peptide bond
peptide bond formation mechanism
peptide bond
definition biology
primary structure of protein

Scholarships for Study in Africa » Scholarships for African Students » Undergraduate Scholarships » African Women Scholarships & Grants » Developing Countries Scholarships » Erasmus Mundus Scholarships for Developing Countries » Fellowship Programs » Funding Grants for NGOs » Government Scholarships » LLM Scholarships » MBA Scholarships » PhD and Masters by Research Scholarships » Public Health Scholarships - MPH Scholarships » Refugees Scholarships » Research Grants » Scholarships and Grants

Scholarships in Australia » Scholarships in Austria » Scholarships in Belgium » Scholarships in Canada » Scholarships in Germany » Scholarships in Italy » Scholarships in Japan » Scholarships in Korea » Scholarships in Netherlands » Scholarships in UK » Scholarships in USA

What is an Operating System? » Computer Shortcut Keys and their Functions » Keyboard Function Keys

Short Stories for Kids - Moral Stories – English Short Stories for Children - Moral Stories for Kids - Stories for Kids - Funny Story for Kids - Scary Stories for Kids - Really Funny Short Stories - Bedtime Stories
Proverb Stories
Powerful Motivational Quotes for Students » Success Quotes » English Short Stories for Kids

Cabin Crew Jobs & Career Advice » Secretary Job Description » Receptionist Job Description » Top 100 Interview Questions and Answers » How to Prepare for an Interview » How to Write a CV » How to Choose a Career » Computer Shortcut Keys and their Functions

Scholarships in Australia » Scholarships in Belgium » Scholarships in Canada » Scholarships in Germany » Scholarships in Italy » Scholarships in Japan » Scholarships in Korea » Scholarships in Netherlands » Scholarships in UK » Scholarships in USA

Click here to post comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Biology Notes FAQ.

Scholarship 2019/20

Undergraduate Scholarships 2019/2020
Masters Scholarships,
PhD Scholarships,
International Scholarships.