cysteinic

cysteine

[sis-tee-een, -in]
noun Biochemistry.
a crystalline amino acid, C 3 H 7 O 2 NS, a component of nearly all proteins, obtained by the reduction of cystine. Abbreviation: Cys; Symbol: C

Origin:
1880–85; alteration of cystine

cysteinic, adjective
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World English Dictionary
cysteine (ˈsɪstɪˌiːn, -ɪn)
 
n
a sulphur-containing amino acid, present in proteins, that oxidizes on exposure to air to form cystine. Formula: HSCH2CH(NH2)COOH
 
[C19: variant of cystine]
 
cyste'inic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

cysteine cys·te·ine (sĭs'tē-ēn', -ĭn, sĭ-stē'ĭn)
n.
Abbr. Cys
An alpha-amino acid found in most proteins and especially abundant in keratin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
cysteine   (sĭs'tə-ēn')  Pronunciation Key 
A nonessential amino acid. Chemical formula: C3H7NO2S. See more at amino acid.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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