Chameleon ‘aggregation-prone’ segments of apoA-I: A model of amyloid fibrils formed in apoA-I amyloidosis

Επιστημονική δημοσίευση - Άρθρο Περιοδικού uoadl:2710174 519 Αναγνώσεις

Μονάδα:
Βιβλιοθήκη και Κέντρο Πληροφόρησης
Τίτλος:
Chameleon ‘aggregation-prone’ segments of apoA-I: A model of amyloid fibrils formed in apoA-I amyloidosis
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Apolipoprotein A-I (apoA-I) is the major component of high density lipoproteins and plays a vital role
in reverse cholesterol transport. Lipid-free apoA-I is the main constituent of amyloid deposits found
in atherosclerotic plaques, an acquired type of amyloidosis, whereas its N-terminal fragments have
been associated with a hereditary form, known as familial apoA-I amyloidosis. Here, we identified and
verified four “aggregation-prone” segments of apoA-I with amyloidogenic properties, utilizing electron
microscopy, X-ray fiber diffraction, ATR FT-IR spectroscopy and polarized light microscopy. These segments
may act as conformational switches, possibly controlling the transition of the -helical apoA-I
content into the “cross-” architecture of amyloid fibrils. A structural model illuminating the structure
of amyloid fibrils formed by the N-terminal fragments of apoA-I is proposed, indicating that two of the
identified chameleon segments may play a vital part in the formation of amyloid fibrils in familial apoA-I
amyloidosis.
Έτος δημοσίευσης:
2015
Συγγραφείς:
Louros, N.N.,
Tsiolaki, P.L.,
Griffin, M.D.,
Howlett, G.J.,
Hamodrakas, S.J.,
Iconomidou, V.A.
Περιοδικό:
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Εκδότης:
Elsevier
Τόμος:
79
Αριθμός / τεύχος:
1
Σελίδες:
711-719
Λέξεις-κλειδιά:
Familial apolipoprotein A-I amyloidosis, “Aggregation-prone” peptide-analogues, Amyloid fibrils
Κύρια θεματική κατηγορία:
Αρχαιολογία
Το ψηφιακό υλικό του τεκμηρίου δεν είναι διαθέσιμο.