Cargando…

Sequence Complexity of Amyloidogenic Regions in Intrinsically Disordered Human Proteins

An amyloidogenic region (AR) in a protein sequence plays a significant role in protein aggregation and amyloid formation. We have investigated the sequence complexity of AR that is present in intrinsically disordered human proteins. More than 80% human proteins in the disordered protein databases (D...

Descripción completa

Detalles Bibliográficos
Autores principales: Das, Swagata, Pal, Uttam, Das, Supriya, Bagga, Khyati, Roy, Anupam, Mrigwani, Arpita, Maiti, Nakul C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3940659/
https://www.ncbi.nlm.nih.gov/pubmed/24594841
http://dx.doi.org/10.1371/journal.pone.0089781
Descripción
Sumario:An amyloidogenic region (AR) in a protein sequence plays a significant role in protein aggregation and amyloid formation. We have investigated the sequence complexity of AR that is present in intrinsically disordered human proteins. More than 80% human proteins in the disordered protein databases (DisProt+IDEAL) contained one or more ARs. With decrease of protein disorder, AR content in the protein sequence was decreased. A probability density distribution analysis and discrete analysis of AR sequences showed that ∼8% residue in a protein sequence was in AR and the region was in average 8 residues long. The residues in the AR were high in sequence complexity and it seldom overlapped with low complexity regions (LCR), which was largely abundant in disorder proteins. The sequences in the AR showed mixed conformational adaptability towards α-helix, β-sheet/strand and coil conformations.