...Nutritional sources of cystine are virtually free of the toxic side effects associated with the single molecule of cysteine, N-acetyl cysteine...... continued below

Quality Cystine from 'House Of Nutrition'

Douglas Lab's L-Cystine 500 mg 60 caps The Best Current Available Price ! Find Out Here Nutritional sources of cystine are virtually free of the toxic side effects associated with the single molecule of cysteine, N-acetyl cysteine. The greatest dietary source of cystine is bio-active, unpasteurized or low-heat pasteurized undenatured whey proteins. Supplemental N-acetyl cysteine is claimed to be a source of cystine, but the dose of this supplement is limited by side effects...

Cystine Dairy Milk Back To Top

Montiff's Pure L-Cystine 500 mg 100 caps The Best Current Available Price ! Find Out Here Nutritional sources of cystine are virtually free of the toxic side effects associated with the single molecule of cysteine, N-acetyl cysteine. The greatest dietary source of cystine is bio-active, unpasteurized or low-heat pasteurized undenatured whey proteins. Supplemental N-acetyl cysteine is claimed to be a source of cystine, but the dose of this supplement is limited by side effects...

Cystine Dairy Milk Back To Top

 

Cystine

Cystine is the amino acid dimer formed when a pair of cysteine molecules are joined by a disulfide bond.

It is described by the formula (SCH2CH(NH2)CO2H)2. It is a colorless solid, and melts at 247-249 °C.

It was discovered in 1810 by William Hyde Wollaston but was not recognized as a component of proteins until it was isolated from the horn of a cow in 1899.

Through formation of disulfide bonds within and between protein molecules, cystine is a significant determinant of the tertiary structure of most proteins.

Disulfide bonding, along with hydrogen bonding and hydrophobic interactions is partially responsible for the formation of the gluten matrix in bread.

Human hair contains approximately 5% cystine by mass.

Back To Top

Properties

The disulfide link is readily reduced to give the corresponding thiol, cysteine.

This reaction is typically effected with thiols such as mercaptoethanol or dithiothreitol.

(SCH2CH(NH2)CO2H)2 + 2 RSH → 2 HSCH2CH(NH2)

CO2H + RSSR

Nutritional sources

Supplemental N-acetyl cysteine is claimed to be a source of cystine, but the dose of this supplement is limited by side effects.

One of the richest nutritional sources of cystine in the diet is undenatured whey proteins from milk.

The disulfide-bonded cystine is not digested or significantly hydrolized by the stomach, but is transported by the blood stream to the tissues of the body.

Here, within the cells of the body, the weak disulfide bond is cleaved to give cysteine, from which glutathione can be synthesized.

Back To Top

In animal feed

Disulfide bonds can be broken at temperatures above about 150 °C, especially at low moisture levels (below about 20%).

Side effects

Nutritional sources of cystine are virtually free of the toxic side effects associated with the single molecule of cysteine, N-acetyl cysteine.

The greatest dietary source of cystine is bio-active, unpasteurized or low-heat pasteurized undenatured whey proteins. *

Cystine
Properties
Molecular formula	C6H12N2O4S2
Molar mass	240.3 g mol−1
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references

*

Read the complete Article in Wikipedia, Feb 22, 2009

* Cystine. (2009, January 24). In Wikipedia,

The Free Encyclopedia.

Retrieved 16:10, February 23, 2009, from

http://en.wikipedia.org/w/index.php?title=

Cystine&oldid=266116450

Back To Top

______________________

_______________________

_______________________

Please enjoy the information...More Products Coming Soon

________________________

 

 

________________________

 

Reiki

Supplements     Vitamins and Minerals
Homeopathy                                   Ayurvedic 

Healing Herbs                  Herbal Teas                 Herbal Tinctures

 Solar Home & RV Systems   Solar Landscape Lighting   Wind Energy Systems

Solar Water Heating Systems                          Solar Pool & Spa Heaters

Hydro Power             Solar Water Pumps             Solar Panels

Shop By Brand                             Shop Alphabetically

Amino Acids          Aromatherapy

Books/eBooks

____________________

_______________________

_______________________

See references for complete information including notes, comments, complete symptoms, sources, concerns and cautions.

_______________________

Disclaimer :

In accordance with FDA regulation, we do not make any therapeutic claims for any Dietary Supplements in accordance with the Dietary Supplement Health and Education Act.

Information on this website is provided for informational purposes only and is not intended as a substitute for the advice provided by your physicians, health care professional or other professional. You should not use the information on this website for diagnosing or treating any health problem, symptom or disease, prescribing any medication or other treatment, or in place of any other professional advice. This information is not intended to diagnose, treat, cure or prevent any diseases. You should consult with a healthcare professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem. Your discretion is advised.

Copyright © 2007

________________________

Back To Top