part of ciliary pocket ciliary centrin arm https://github.com/geneontology/go-ontology/issues/20062 cellular_component A rod-shaped protein complex containing Centrin4 protein that flanks the flagellum attachment zone (FAZ) filament and the quartet microtubules. 2020-09-30T18:20:22Z GO:0120269 Note that cilia and eukaryotic flagella are deemed to be equivalent. In diplomonad species, such as Giardia, the axoneme may extend intracellularly up to 5um away from the plane of the plasma membrane. krc intracellular protein-containing complex