Avtor/Urednik     Hancock, John M.; Simon, Michelle M
Naslov     Simple sequence repeats in proteins and their significance for network evolution
Tip     članek
Vol. in št.     Letnik 345, št. 1
Leto izdaje     2005
Obseg     str. 113-118
ISSN     0378-1119 - Gene
Jezik     eng
Abstrakt     Only 5-6% of mammalian genomes are genes; the remainders are made up primarily of transposable elements and different types of simple sequence repeat (SSRs) (micro- and minisatellites and cryptic repeats), which tend to accumulate in organisms with larger genomes. SSRs are also found at the level of protein sequences and may or may not be encoded by SSRs at the DNA sequence level. Studies of proteins containing SSRs indicate that they tend to belong to particular functional classes, particularly transcription factors and protein kinases. Protein SSRs coded for by pure codon repeats evolve rapidly while those encoded by mixtures of codons evolve slowly. We outline a conceptualization of how protein SSRs may arise and become fixed in proteins during evolution, and suggest that emergence and change in length of protein SSRs may affect the topology of protein interaction networks.
Proste vsebinske oznake     proteins
simple sequence repeats
genomes
beljakovine
enostavne ponovitve zaporedja
genomi