Advances in Protein Chemistry, 8 by M L Anson; J T Edsall

By M L Anson; J T Edsall


Show description

Read or Download Advances in Protein Chemistry, 8 PDF

Best botany books

Rye: Genetics, Breeding, and Cultivation

As a result of its significant iciness hardiness, rye is a cereal that performed an enormous function within the feeding of ecu populations through the center a while. fresh information indicates that rye is grown on approximately five. four million hectares, with an international creation of roughly thirteen million lots. whereas nonetheless a tremendous bread foodstuff in lots of international locations, rye produced for bread making has lowered or stagnated, while construction is expanding for different marketplace segments.

Handbook of Essential Oils: Science, Technology, and Applications

Egyptian hieroglyphs, chinese language scrolls, and Ayurvedic literature checklist physicians administering fragrant oils to their sufferers. this present day society seems to technology to rfile  health and wellbeing offerings and the oils don't disappoint. The becoming physique of proof in their efficacy for greater than simply scenting a room underscores the necessity for construction criteria, quality controls parameters for uncooked fabrics and complete items, and well-defined stable production Practices.

Water Relations of Plants

This e-book attemps to explain the significance of water via describing the criteria that regulate the plant water stability and exhibit how they have an effect on the physiological approach that determines the quanity and caliber of progress

Additional info for Advances in Protein Chemistry, 8

Sample text

For the extraction of the peptide, the medium is saturated with ammonium sulfate and extracted with isopropyl alcohol. The peptide is adsorbed from the isopropyl solution on to alumina, and then eluted into water. It ia then precipitated from aqueous solution with picric acid. The polymyxin picrate is converted to the hydrochloride derivative from which it undergoes further purification (475,522). By saturation with ammonia (55) the free base can be precipitated from a concentrated aqueous solution of the hydrochloride.

558) noted that chicken pancreas conjugase is inhibited by p-aminobenzoyltriglutamic acid, and Sims and Totter (528) observed this to be true for yeast p-amiiiobenzoylpolyglutamic acid, which also inhibits rat NATURALLY OCCURRING PEPTIDER 49 liver conjugase in vitro. The action of this polypeptide on pig kidney conjugase is not known. Mims, Swendseid, and Bird (417) have shown that deoxy- and ribonucleic acids are powerful inhibitors of pig kidney and intestinal conjugases. The inhibitory effect of these nucleic acids disappears after they have been acted upon by ribonuclease or deoxyribonucleodepolymerase.

The identity of the naturally occurring substance and the synthetic peptide has been confirmed by a comparison of their infrared (82)and ultraviolet (83) spectra. (3) Pteroylheptaglutamic Acid. The structure of the vitamin B, conjugate is not yet entirely clear. Pfiffner el al. (462) from ultraviolet absorption spectra data believe that this conjugate is built up of vitamin B, linked with a lateral, nonultraviolet-absorbing, nitrogen-containing chain. Acid hydrolysis of the conjugate (461) liberates 7 moles of L ( + ) glutamic acid for each mole of p-aminobenzoic acid.

Download PDF sample

Rated 4.14 of 5 – based on 14 votes