L-Cystine CAS: 56-89-3 99% Nga tioata ma, te paura tioata ranei
| Nama Putumōhio | XD90322 |
| Ingoa Hua | L-Cystine |
| CAS | 56-89-3 |
| Tātai rāpoi | C6H12N2O4S2 |
| Taumaha rāpoi | 240.30 |
| Nga Taipitopito Rokiroki | Ambient |
| Waehere Rere Whakariterite | 29309013 |
Whakatakotoranga Hua
| Te ahua | Kiriata ma, paura tioata ranei |
| Te whakamatautau | 99% |
| Kōeke | USP32 |
| Te hurihanga motuhake | -215° ki te -225° |
| Nga konganuku taumaha | <0.0015% |
| AS | 1.5ppm te teitei |
| SO4 | 0.040% te teitei |
| Fe | <0.003% |
| Ngaronga i te whakamaroke | 0.20%max |
| Te toenga i runga i te mura | 0.10%max |
| Cl | 0.10%max |
Ko nga hanganga karaihe o te carboxypeptidase T (CpT) matatini me te phenylalanine me te arginine taputapu tairitenga - waikawa benzylsuccinic me te (2-guanidinoethylmercapto) waikawa succinic - i whakatauhia e te tikanga whakakapi irapoo i nga whakataunga o te 1.57 Å me te 1.62 Å ki te whakamarama i te waahanga whanui. o te whākōkī.Ko nga toenga Leu211 me te Leu254 (kei roto ano hoki i te carboxypeptidase A me te carboxypeptidase B) i whakaatuhia he tohu hanganga mo te mohio ki nga taputapu hydrophobic, engari ko te Asp263 mo te mohio ki nga taputapu pai.Ko nga whakarereketanga o enei tohu ka whakarereke i te ahua o te tïpako: ko te momo CpT Leu211Gln ka whiwhi i nga ahuatanga B-rite ki te carboxypeptidase, me te momo CpT Asp263Asn ko te carboxypeptidase A-rite te whiriwhiri.Ko te porowhita Pro248-Asp258 e taunekeneke ana ki a Leu254 me Tyr255 i whakaatuhia he kawenga mo te mohio ki te toenga C-terminal o te taputapu.Ko te herenga o te papaahi ki te waahi S1' ka arahi ki te nekehanga o te herenga o te herenga o tenei koropiko, a ko te nekehanga o te mekameka taha o Leu254 ka whakaawe i te whakarereketanga o te toenga Glu277 he mea nui mo te catalysis.He tirohanga hou tenei ki te kowhiringa o te tïpako o te metallocarboxypeptidases e whakaatu ana i te hiranga o nga taunekeneke i waenga i te waahi S1 me te pokapū catalytic.
