##### Asked by: Zaki Vez

asked in category: General Last Updated: 28th February, 2020# How many combinations of proteins can be made?

**can**be arranged in

**many**different

**combinations**, it's possible for your body to make thousands of different kinds of

**proteins**from just the same 21 amino acids. You may see books that say there are only 20 amino acids.

In this manner, how many proteins are possible?

Proteins coded in human genome are expected to number about 3.5 × 10^{4}. If any combinations of **20** amino acids are equally possible, there are 1.3 × 10^{130} ( = **20**^{100}) possible amino acid sequences in proteins being composed of 100 amino acids.

how do you find all possible combinations? **Combinations** are a way to calculate the total outcomes of an event where order of the outcomes does not matter. To calculate **combinations**, we will use the formula nCr = n! / r! * (n - r)!, where n represents the total number of items, and r represents the number of items being chosen at a time.

People also ask, how do you combine foods to make a complete protein?

**Combinations include:**

- Nuts or seeds with whole grains (peanut butter on whole wheat toast)
- Whole grains with beans (beans and rice; hummus and pita bread; bean-based chili and crackers; refried beans and tortillas)
- Beans with nuts or seeds (salad with chickpeas and sunflower seeds)

How many different combinations are there for a protein thats three amino acids long?

Since each of the 20 **amino acids** is chemically distinct and each can, in principle, occur at any position in a **protein** chain, **there** are 20 × 20 × 20 × 20 = 160,000 **different possible** polypeptide chains four **amino acids long**, or 20^{n} **different possible** polypeptide chains n **amino acids long**.