An antibody specific for a conserved gamma-tubulin peptide identifies a plant polypeptide of 58 kDa. gamma-Tubulin antibody affinity purified from this polypeptide recognizes the centrosome in mammalian cells. Using immunofluorescence microscopy, we determined the distribution of this gamma-tubulin-related polypeptide during the complex changes in microtubule arrays that occur throughout the pl...

Multilamellar membranes are important building blocks for constructing self-assembled structures with improved barrier properties, such as multilamellar lipid vesicles. Polymeric vesicles (polymersomes) have attracted growing interest, but multilamellar polymersomes are much less explored. Here, we report the formation of polypeptide vesicles with unprecedented densely packed multilayer membran...

The regulation of the synthesis of one of the major polypeptides of chloroplast membranes in Chlamydomonas reinhardi y-1 has been studied in order to determine what factors are involved in the control mechanism. The polypeptide is synthesized in the cytoplasm and previously was designated as c (J. K Hoober. 1972. J. Cell Biol.52:84). Under normal conditions the synthesis of polypeptide c appear...

A collection of 17 monoclonal antibodies elicited against the light-harvesting chlorophyll a/b protein complex which serves photosystem II (LHC-II) of Pisum sativum shows six classes of binding specificity. Antibodies of two of the classes recognize a single polypeptide (the 28- or the 26- kD polypeptides), thereby suggesting that the two proteins are not derived from a common precursor. Other ...

Hydatidosis is a disease caused by infection with the metacestode stage of the dog tapeworm,Echinococcus granulosus. This is recognised as one of the world’s most important zoonoses, affecting bothhumans and their domestic animals. In the current study, 20 sheep cystic livers or lungs were collected.Hydatid fluid and protoscolices were isolated and the soluble protein was prepared. Polypeptide ...

As an approach to study the mechanism of the microbody transition (glyoxysomes to leaf peroxisomes) in greening pumpkin cotyledons, catalase molecules were purified from the two different types of microbody and their structural properties were compared. The purified glyoxysomal catalase was found to consist of four identical subunits (55 kDa), whereas the leaf peroxisomal catalase contains two ...

The effects of truncal vagotomy and parietal cell vagotomy on gastric acid secretion and plasma gastrin and pancreatic polypeptide release were studied in 28 duodenal ulcer patients under basal conditions and after modified sham feeding and infusion of pentagastrin (2 micrograms/kg/h). Before vagotomy gastric acid output in response to modified sham feeding was significantly higher than basal a...

The objective of this study is to enhance the inhibition of ice growth in the aqueous solution of a polypeptide, which is inspired by winter flounder antifreeze protein. We carried out measurements on unidirectional freezing of the polypeptide solution. The thickness of the solution was 0.02 mm, and the concentration of polypeptide was varied from 0 to 2 mg/mL. We captured successive microscopi...

VIPomas can occur as part of the type 1 multiple endocrine neoplasia (MEN) syndrome. VIP is the principal mediator of the watery diarrhea syndrome (also known as pancreatic cholera, Werner-Morrison syndrome, or diarrheogenic islet cell tumor). Watery diarrhea syndrome, with elevated VIP, has also been associated with neurogenic tumors (ganglioneuroma, neuroblastoma, pheochromocytoma), bronchoge...