Adinokaryon is aeukaryoticnucleus present indinoflagellates in which thechromosomes are fibrillar in appearance (i.e. with unmaskedDNA fibrils) and are more or less continuously condensed.
Nucleus with a dark nucleolus. The cell usually measures between 20 and 30 micrometers.
Histones are absent.[3] However, recent EST sequencing has revealed the presence of histones in one of the closest relative to dinoflagellates,Perkinsus marinus and an early-branching dinoflagellate,Hematodinium sp.[4] However, histone-like proteins of bacterial origins are found in the coding regions at periphery of the dinokaryon's chromosomes.[5]
^FENSOME R.A., TAYLOR F.J.R., NORRIS G., SARJEANT W.A.S., WHARTON D.I. & WILLIAMS G.L. 1993. A classification of living and fossil dinoflagellates. American Museum of Natural History, Micropaleontology, Special Publication 7: 1-351.
^Gornik, S.G., Ford, K.L., Mulhern, T.D., Bacic, A., McFadden, G.I., and Waller, R.F.(2012). Loss of nucleosomal DNA condensation coincides with appearance of a novel nuclear protein in dinoflagellates. Curr. Biol. 22,2303–2312
