Cryptocyanin

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.

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.

Cryptocyanin is also synthesized in the hepatopancreas R cells.

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.

"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.

We used transverse pumping in conjunction with theoretical calculations to show that the degree of polarization of the induced emission from cryptocyanin and phthalocyanin can vary from 1 to 0 in accordance with the excitation conditions.