cryptocyanin

Noun

cryptocyanin (usually uncountable, plural cryptocyanins)

1. (usually) A hexameric protein associated with moulting in crustaceans
   • Cryptocyanin, a copper-free hexameric protein in crab (Cancer magister) hemolymph, has been characterized and the amino acid sequence has been deduced from its cDNA.1999 March 2, Nora B. Terwilliger, “Cryptocyanin, a crustacean molting protein: Evolutionary link with arthropod hemocyanins and insect hexamerins”, in PNAS, volume 95, number 5
   • We have studied expression patterns of members of the hemocyanin gene family, hemocyanin, cryptocyanin, and phenoloxidase, in Cancer magister to better understand the molecular basis of the complex regulation and physiological transformations that occur during molting.2013, Metalloproteins—Advances in Research and Application: 2013 Edition
2. (usually) Synonym of cryptocyanine.
   • One which has recently been tried, known as cryptocyanin, makes plates so sensitive to the extreme red (at the very end of the visible spectrum, near Fraunhofer's A line) that photographs of a landscape may be obtained, with this red light, almost instantaneously.1922, Scientific American, volume 127, page 418
   • "Koha" was a cipher name of ex-army for cryptocyanin O. A., which was synthesized by Dr. T. Ogata for sensitizing the photoplate to infrared rays.1952 May, Nobukatsu Shimada, “On the influence of "koha", a photosensitizing dye, against anemia caused by irradiation”, in Keio Journal of Medicine, volume 1, number 2

   Synonyms:

   cryptocyanine