L-Cysteine (CAS# 52-90-4)

Ohun-ini Kemikali:

Fọọmu Molecular	C3H7NO2S
Ojuami Iyo	220 ℃
Ojuami Boling	293.9 °C ni 760 mmHg
Yiyi pato (α)	8.75º(C=12, 2N HCL)
Omi Solubility	280 g/L (25℃)
Ifarahan	Funfun okuta lulú
Ibi ipamọ Ipo	2-8℃
Ni imọlara	Ifarabalẹ si imọlẹ
MDL	MFCD00064306
Ti ara ati Kemikali Properties	Double Crystal monoclinic tabi orthogonal crystal, yo ojuami 178 ℃,[alpha] 26.5(mol/L hydrochloric acid), pẹlu imine lenu, ni didoju tabi die-die ojutu ipilẹ jẹ rọrun lati jẹ ifoyina afẹfẹ sinu cystine, agbegbe ekikan jẹ iduroṣinṣin, tiotuka ninu omi, ethanol, acetic acid, insoluble in ether, acetone, ethyl acetate, benzene, carbon disulfide ati erogba tetrachloride.
Lo	Fun itọju àléfọ, urticaria, freckles ati awọn arun awọ-ara miiran, lẹsẹsẹ awọn ọja rẹ ni lilo pupọ ni oogun, ounjẹ ati ile-iṣẹ ohun ikunra.

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Alaye ọja

ọja Tags

Awọn aami ewu	Xn – ipalara
Awọn koodu ewu	R22 – Ipalara ti o ba gbe R36 / 37/38 - Irritating si oju, eto atẹgun ati awọ ara.
Apejuwe Abo	S26 - Ni ọran ti olubasọrọ pẹlu awọn oju, fi omi ṣan lẹsẹkẹsẹ pẹlu ọpọlọpọ omi ki o wa imọran iṣoogun. S37 / 39 - Wọ awọn ibọwọ ti o dara ati aabo oju / oju

Ọrọ Iṣaaju

L-cysteine (L-Cysteine) jẹ amino acid ti ko ṣe pataki, ti a fi sinu koodu nipasẹ awọn codons UGU ati UGC, ati pe o jẹ amino acid ti o ni sulfhydryl. Nitori wiwa awọn ẹgbẹ sulfhydryl, majele rẹ jẹ kekere, ati bi antioxidant, o le ṣe idiwọ iran ti awọn ipilẹṣẹ ọfẹ. & & L-cysteine jẹ amino acid ti kii ṣe pataki. O si jẹ ẹya activator ti NMDA. O tun ṣe ọpọlọpọ awọn ipa ninu aṣa sẹẹli, gẹgẹbi atẹle: 1. Amuaradagba sobusitireti; Ẹgbẹ sulfhydryl ni cysteine ṣe ipa pataki ninu dida awọn ifunmọ disulfide, ati pe o tun ṣe iduro fun kika awọn ọlọjẹ, iran ti awọn ẹya ile-ẹkọ giga ati awọn ile-ẹkọ giga. 2. Iṣọkan Acetyl-CoA; 3. daabobo awọn sẹẹli lati aapọn oxidative; 4. jẹ orisun akọkọ ti sulfur ni aṣa sẹẹli; 5. Ionophore irin. & & Iṣẹ iṣe-ara: Cysteine jẹ pola α-amino acid ti o ni awọn ẹgbẹ sulfhydryl ninu ẹgbẹ aliphatic. Cysteine jẹ amino acid pataki ni majemu ati amino acid saccharogenic fun ara eniyan. O le ṣe iyipada lati methionine (methionine, amino acid pataki fun ara eniyan) ati pe o le yipada si cystine. Idinku ti cysteine ti bajẹ sinu pyruvate, hydrogen sulfide ati amonia nipasẹ iṣẹ ti desulphurase labẹ awọn ipo anaerobic, tabi nipasẹ transamination, ọja agbedemeji β-mercaptopyruvate ti bajẹ sinu pyruvate ati sulfur. Labẹ awọn ipo ifoyina, lẹhin ti a ti sọ di oxidized si cysteine sulfurous acid, o le jẹ jijẹ sinu pyruvate ati sulfurous acid nipasẹ transamination, ati ki o decomrated sinu taurine ati taurine nipasẹ decarboxylation. Ni afikun, cysteine jẹ agbo-ara ti ko duro, ni irọrun redox, ati interconverts pẹlu cystine. O tun le jẹ dipọ pẹlu awọn agbo ogun aromatic majele lati ṣajọpọ mercapturic acid lati detoxify. Cysteine jẹ oluranlowo idinku, eyi ti o le ṣe igbelaruge dida ti giluteni, dinku akoko ti o nilo fun dapọ ati agbara ti o nilo fun lilo oogun. Cysteine ṣe irẹwẹsi eto amuaradagba nipasẹ yiyipada awọn ifunmọ disulfide laarin awọn ohun elo amuaradagba ati inu awọn ohun elo amuaradagba, ki amuaradagba na jade.

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