L-Cystine CAS: 56-89-3 99% Kirisiti yera cyangwa ifu ya kristaline
| Umubare wa Cataloge | XD90322 |
| izina RY'IGICURUZWA | L-Cystine |
| URUBANZA | 56-89-3 |
| Inzira ya molekulari | C6H12N2O4S2 |
| Uburemere bwa molekile | 240.30 |
| Ibisobanuro birambuye | Ibidukikije |
| Amategeko agenga ibiciro | 29309013 |
Kugaragaza ibicuruzwa
| Kugaragara | Kirisiti yera cyangwa ifu ya kirisiti |
| Suzuma | 99% |
| Icyiciro | USP32 |
| Kuzenguruka byihariye | -215 ° kugeza kuri -225 ° |
| Ibyuma biremereye | <0.0015% |
| AS | 1.5ppm max |
| SO4 | 0.040% max |
| Fe | <0.003% |
| Gutakaza Kuma | 0,20% max |
| Ibisigaye kuri Ignition | 0,10% max |
| Cl | 0,10% max |
Imiterere ya kristu yububiko bwa carboxypeptidase T (CpT) hamwe na fenylalanine na arginine substrate igereranya - acide benzylsuccinic na (2-guanidinoethylmercapto) acide succinic - byagenwe nuburyo bwo gusimbuza molekile kumyanzuro ya 1.57 Å na 1.62 Å kugirango isobanure neza umwirondoro mugari wa substrate. ya enzyme.Ibisigisigi bya Leu211 na Leu254 (biboneka no muri carboxypeptidase A na carboxypeptidase B) byagaragaye ko ari ibintu byerekana imiterere yo kumenya insimburangingo ya hydrophobique, mu gihe Asp263 yari iyo kumenyekanisha insimburangingo zishyizwe neza.Guhinduka kwibi byemezo bihindura umwirondoro wa substrate: variant ya CpT Leu211Gln igura carboxypeptidase B imeze nka B, hamwe na CpT ihinduka Asp263Ku buryo bwa carboxypeptidase A-guhitamo.Umuzingo wa Pro248-Asp258 ukorana na Leu254 na Tyr255 wagaragaye ko ufite inshingano zo kumenyekanisha ibisigisigi bya C-terminal.Guhuza ibice kuri S1 'biganisha kuri ligand-dep endent ihinduka ryuyu muzingo, kandi Leu254 yiminyururu yuruhande itera guhindura ihinduka ryibisigisigi bya Glu277 byingenzi kuri catalizike.Ubu ni ubushishozi bushya muburyo bwo guhitamo metallocarboxypeptidase yerekana akamaro k'imikoranire hagati ya S1 'na santere ya catalitiki.
