Protein Z [SEP] found in taxon
serine residue that would make it catalytically active as a serine protease.
History.
Protein Z was first isolated in cattle blood by Prowse and Esnouf in 1977, and Broze & Miletich determined it in human plasma in 1984.
Structure.
Structural analysis of protein Z will allow better understanding of its function. The Ramachandran plot for protein Z indicates it will form alpha helices. The final structure, all alpha domain, was determined by x-ray diffraction. It consists of chain A and B, which are
Zapsalis
Zapsalis is a genus of dromaeosaurine theropod dinosaurs. It is a tooth taxon, often considered dubious because of the fragmentary nature of the fossils, which include teeth but no other remains.
The type species is "Zapsalis abradens", from the Judith River Formation of Montana, dating to 75 million years ago, during the Campanian stage. Additional teeth attributed to "Z. abradens" have been found in the Dinosaur Park Formation, also dated to about 75 Ma ago. While "Zapsalis"-like teeth have been found in