ISSN:
1615-6102
Keywords:
Flagellate green algae
;
Fibrous flagellar roots
;
System II fibres
;
System I fibres
;
Centrin
;
Assemblin
;
Phosphorylation
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary In flagellate green algae two types of fibrous flagellar roots can be distinguished: system I fibres, cross-striated bundles of 2nm filaments (striation periodicity about 30 nm), which are associated with flagellar root microtubules, and system II fibres, contractile bundles of 4–8 nm filaments which are often cross-striated (striation periodicity variable but greater than 80 nm). The major protein of system II fibres is centrin, a Ca2+-modulated phosphoprotein, which is a member of the EF-hand protein family. The major protein of system I fibres (of severalChlamydomonas-type green algae) is a 34 kDa phosphoprotein, named assemblin. Because of the solubility characteristics of system I fibres and the properties of their major protein (paracrystal-formation in vitro, several isoelectric variants, heptad motifs in parts of the amino acid sequence), assemblin is presumably related to the k-m-e-f class of α-helical fibrous proteins.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01320813
