Cryptocyanin, a crustacean molting protein: evolutionary link with arthropod hemocyanins and insect hexamerins.
AuthorsTerwilliger NB, Dangott L, Ryan M
JournalProc Natl Acad Sci U S A
PubMed ID10051586
'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. It is markedly similar in sequence, size, and structure to hemocyanin, the copper-containing oxygen-transport protein found in many arthropods. Cryptocyanin does not bind oxygen, however, and ... More
Male gametic cell-specific gene expression in flowering plants.
AuthorsXu H, Swoboda I, Bhalla PL, Singh MB
JournalProc Natl Acad Sci U S A
PubMed ID10051681
'The role of the male gamete-the sperm cell-in the process of fertilization is to recognize, adhere to, and fuse with the female gamete. These highly specialized functions are expected to be controlled by activation of a unique set of genes. However, male gametic cells traditionally have been regarded as transcriptionally ... More