Zistina
| Zistina | |
|---|---|
 | |
| Formula kimikoa | C6H12N2O4S2 |
| SMILES kanonikoa | 2D eredua |
| SMILES isomerikoa | N[C@@H](CSSC[C@H](N)C(O)=O)C(O)=O |
| MolView | 3D eredua |
| Konposizioa | Nitrogeno, sufre eta karbono |
| Mota | DL-cystine (en)  |
| Estereoisomeroa | D-cystine (en) eta L-cystine zwitterion (en) |
| Tautomeroa | L-cystine zwitterion (en) |
| Ezaugarriak | |
| Disolbagarritasuna | 0,011 g/100 g (ur, 25 ℃) |
| Masa molekularra | 240,023849 Da |
| Identifikatzaileak | |
| InChlKey | LEVWYRKDKASIDU-IMJSIDKUSA-N |
| CAS zenbakia | 56-89-3 |
| ChemSpider | 60997 |
| PubChem | 67678 eta 6992103 |
| Reaxys | 1728094 |
| Gmelin | 16283 eta 35491 |
| ChEBI | 51008 |
| ChEMBL | CHEMBL590540 |
| ZVG | 100168 |
| EC zenbakia | 200-296-3 |
| ECHA | 100.000.270 |
| CosIng | 75424 |
| RxNorm | 3036 |
| Human Metabolome Database | HMDB0000192 |
| KNApSAcK | C00001352 |
| UNII | 48TCX9A1VT |
| NDF-RT | N0000147293 |
| KEGG | D03636 |
| PDB Ligand | IYY |
Zistina konposatu organikoa da, C6H12N2O4S2 formula duena, organosufre konposatuen familiakoa, disulfuroen klasekoa. Zisteina aminoazidoaren dimeroa da, bi amino talde eta bi azido karboxiliko talde ditu; aminoazido ez-esentziala da. Solido kolorgea da. Uretan ia disolbaezina da. Narritagarria da[1].
Produktu naturala da eta ohikoa da elikagai askotan hala nola arrautzetan, okelan, esnekietan eta zereal integraletan. Halaber, animalien larruazalean, adarretan eta ilean aurki daiteke.
Sintesia
Zistina zisteinaren oxidazioz lortzen da.
![{\displaystyle {2\,\mathrm {HO} {\vphantom {A}}_{\smash[{t}]{2}}\mathrm {CCH} (\mathrm {NH} {\vphantom {A}}_{\smash[{t}]{2}})\mathrm {CH} {\vphantom {A}}_{\smash[{t}]{2}}\mathrm {SH} {}+{}{\mathchoice {\textstyle {\frac {1}{2}}}{\frac {1}{2}}{\frac {1}{2}}{\frac {1}{2}}}\,\mathrm {O} {\vphantom {A}}_{\smash[{t}]{2}}{}\mathrel {\longrightarrow } {}(\mathrm {HO} {\vphantom {A}}_{\smash[{t}]{2}}\mathrm {CCH} (\mathrm {NH} {\vphantom {A}}_{\smash[{t}]{2}})\mathrm {CH} {\vphantom {A}}_{\smash[{t}]{2}}\mathrm {S} ){\vphantom {A}}_{\smash[{t}]{2}}{}+{}\mathrm {H} {\vphantom {A}}_{\smash[{t}]{2}}\mathrm {O} }}](https://wikimedia.org/api/rest_v1/media/math/render/svg/0a4399ef138cd9138373a0087b504448e2cf9a8d)
Erabilera
Zistina aromatizatzaile, ore-trinkotzaile eta osagarri nutrizional gisa baliatzen da elikagai-industrian[2].
Erreferentzia
- ↑ (Ingelesez) PubChem. «Cystine» pubchem.ncbi.nlm.nih.gov (kontsulta data: 2025-05-01).
- ↑ «Cystine - Hazardous Agents | Haz-Map» haz-map.com (kontsulta data: 2025-05-01).
Kanpo estekak
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