How many 3-tuples are possible for the following amino acid sequence?
MADCMWDISEASE
Counting Consecutive 3-Tuples in Amino Acid Sequence
A 3-tuple, in this context, refers to a consecutive subsequence of three amino acids within the given sequence.
The provided amino acid sequence is: MADCMWDISEASE
First, determine the total number of amino acids in the sequence. Counting each letter:
- M, A, D, C, M, W, D, I, S, E, A, S, E
- There are 13 amino acids in the sequence. Let this length be $N = 13$.
To find the number of possible 3-tuples, we can list them starting from each possible position:
- MAD
- ADC
- DCM
- CMW
- MWD
- WDI
- DIS
- ISE
- SEA
- EAS
- ASE
Counting these listed 3-tuples, we find there are 11 possible combinations.
Alternatively, the number of k-length subsequences (tuples) in a sequence of length $N$ is given by the formula: $N - k + 1$.
In this case, $N = 13$ and $k = 3$.
Number of 3-tuples = $13 - 3 + 1 = 11$.
Therefore, there are 11 possible 3-tuples.
Important Questions from Molecular Structure of Genes and Chromosomes
- All pseudogenes DO NOT code for a __________.
- C-value paradox refers to
- DNA sample collected from an unidentified bacterial species (Y) contains 13% of adenine. The G+C content (in percentage) of Y is ________
The contour length of a B-DNA molecule that encodes a bacterial protein of 33 kDa is _________ nm.
Consider the average molecular weight of an amino acid as 110 Da and helix rise per base pair for B-DNA as 0.34 nm.
(Round off to the nearest integer)
- Which of the following methods is/are used for identifying histone modifications?
