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Table 2 Comparison of Ca 2+ -dependent regulation of outer arm dynein between Ciona sperm flagella and Chlamydomonas flagella

From: Calcium sensors of ciliary outer arm dynein: functions and phylogenetic considerations for eukaryotic evolution

 

Ciona

Chlamydomonas

Outer arm dynein

Two-headed

Tree-headed

Ca2+sensor

Calaxin

LC4 (+DC3)

Target heavy chain

β HCa

γ HCa

Low Ca2+

Binding to IC2b

Binding to HC

Binding to β-tubulin

High Ca2+

Binding to HC

Binding to HC

Binding to IC2

Binding to IC1b

MTs sliding

Suppression

ND

Flagellar asymmetry

High Ca2+

Low Ca2+

  1. The nomenclatures of the components of dynein are confusing because these were originally named based on electrophoretic mobility in SDS-gel (see references [56,57,166,174]). a Chlamydomonas γ HC corresponds to Ciona β HC. b Chlamydomonas IC1 corresponds to Ciona IC2.
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Cilia

ISSN: 2046-2530

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