Characteristics of Palindromic Sequences in Proteins
Author Information
Author(s): Sheari Armita, Kargar Mehdi, Katanforoush Ali, Arab Shahriar, Sadeghi Mehdi, Pezeshk Hamid, Eslahchi Changiz, Marashi Sayed-Amir
Primary Institution: Institute for Studies in Theoretical Physics and Mathematics (IPM), Tehran, Iran
Hypothesis
What is the role of sequence complexity in the evolution of palindromic sequences in proteins?
Conclusion
Palindromic sequences in proteins are abundant mainly due to their occurrence in low-complexity regions, rather than having a significant role in protein function.
Supporting Evidence
- Palindromic peptides are significantly less complex than randomly generated palindromes.
- Palindromic sequences often overlap with conserved protein Blocks.
- Palindromic sequences show a tendency to form α-helical structures.
Takeaway
This study found that palindromic sequences in proteins are common because they often appear in simple protein regions, not because they help proteins work better.
Methodology
The study analyzed 1094 proteins to compare the complexity and structural characteristics of palindromic sequences with randomly generated sequences.
Limitations
The study may not account for all factors influencing the presence of palindromic sequences in proteins.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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