N-acetyl-D-glucosamine-asparagine structure in ribosome-inactivating proteins from the seeds of Luffa cylindrica and Phytolacca americana.
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چکیده
منابع مشابه
Complete amino acid sequence of luffin-b, a ribosome-inactivating protein from sponge gourd (Luffa cylindrica) seeds.
The complete amino acid sequence of luffin-b has been determined. All the twenty-seven tryptic peptides were isolated by reverse-phase HPLC from the tryptic digests of intact luffin-b and one of its CNBr fragments (CB4), and sequenced using the DABITC/PITC double coupling method. The overlap of these peptides was achieved by analyzing the CNBr fragments and their chymotryptic peptides. Luffin-b...
متن کاملIsolation and partial characterization of three protein-synthesis inhibitory proteins from the seeds of Luffa cylindrica.
Three new proteins which inhibit protein synthesis in rabbit reticulocyte lysates were isolated from an extract of sponge gourd (Luffa cylindrica) seeds by chromatography on a AF-Blue Toyopearl column followed by FPLC with a Mono S column. These three protein-synthesis inhibitory proteins (PSIs) have molecular masses of 19 kDa, 15 kDa, and 9 kDa, and were designated 19K-PSI, 15K-PSI, and 9K-PSI...
متن کاملStructural analysis of a type 1 ribosome inactivating protein reveals multiple L-asparagine-N-acetyl-D-glucosamine monosaccharide modifications: Implications for cytotoxicity
Pokeweed antiviral protein (PAP) belongs to the family of type I ribosome‑inactivating proteins (RIPs): Ribotoxins, which function by depurinating the sarcin‑ricin loop of ribosomal RNA. In addition to its antibacterial and antifungal properties, PAP has shown promise in antiviral and targeted tumor therapy owing to its ability to depurinate viral RNA and eukaryotic rRNA. Several PAP genes are ...
متن کاملSynthesis of oseltamivir and tamiphosphor from N-acetyl-D-glucosamine.
Using N-acetyl-D-glucosamine as a starting material, the anti-influenza drugs oseltamivir and tamiphosphor were synthesized via a pivotal intermediate of aldehyde 8. An intramolecular Horner-Wadsworth-Emmons reaction was utilized to construct the highly functionalized cyclohexene ring. The existing N-acetyl group was transformed into an azido group for the subsequent aziridination, followed by ...
متن کاملRibosome Inactivating Proteins from Rosaceae.
Ribosome-inactivating proteins (RIPs) are widespread among higher plants of different taxonomic orders. In this study, we report on the RIP sequences found in the genome/transcriptome of several important Rosaceae species, including many economically important edible fruits such as apple, pear, peach, apricot, and strawberry. All RIP domains from Rosaceae share high sequence similarity with con...
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1991
ISSN: 0002-1369,1881-1280
DOI: 10.1271/bbb1961.55.1375