L-Cysteine CAS: 52-90-4 98-101% White crystalline powder
| Catalog Number | XD90321 |
| Product Name | L-Cysteine |
| CAS | 52-90-4 |
| Molecular Formula | HSCH2CH(NH2)CO2H |
| Molecular Weight | 121.16 |
| Storage Details | 2 kusvika ku8 °C |
| Harmonised Tariff Code | 29309013 |
Chigadzirwa Specification
| Chitarisiko | White crystalline powder |
| Assay | 98.0% - 101.0% |
| Kutenderera chaiko | +8.3°~ +9.5° |
| pH | 4.5 ~ 5.5 |
| SO4 | 0.03% yakakura |
| Fe | 10ppm max |
| Kurasika paKuomesa | 0.5% max |
| Residue paIgnition | 0.1% max |
| NH4 | 0.02% yakakura |
| AS2O3 | 1ppm mukuru |
| Cl | ≤0.2% |
| Heavy metal (sePb) | 10ppm max |
| State of Solution | 95.0% min |
Iron-sulfur clusters inoshanda semacofactors emhando dzakasiyana-siyana dzemapuroteni, ane mabasa akasiyana-siyana mumasero eprokaryotic uye eukaryotic.Michina yakatsaurirwa inounganidza masumbu uye nekuaendesa kune ekupedzisira anogashira mamorekuru mune yakadzorwa maitiro.Mune prototypical Gram-negative bhakitiriya Escherichia coli, maviri aripo iron-sulfur cluster assembly masisitimu, iron-sarufa cluster (ISC) uye sulfur assimilation (SUF) nzira, dzakabatana.ISC pathway regulator, IscR, chinhu chinyorwa chemhando yehelix-turn-helix inogona kurongedza [2Fe-2S] cluster.Redox mamiriro uye kuwanikwa kwesimbi kana sarufa inogadzirisa iyo ligation mamiriro eiyo labile IscR cluster, iyo inozogadzirisa shanduko muDNA sequence yakasarudzika yemutongi: cluster-ine IscR inogona kusunga kumhuri yevanokurudzira gene (rudzi-1) nepo iyo Clusterless fomu inongoziva boka rechipiri rekutevedzana (mhando-2).Nekudaro, iron-sarufa cluster biogenesis muGram-posi tive bacteria haina kunyatso kuratidzwa, uye zvipenyu zvakawanda zveboka iri zvinongoratidzira imwe chete yesimbi-sarufa magungano masisitimu.Chinhu chinocherechedzwa ndecheyakasarudzika yeGram-positive dissimilatory simbi inodzikisa bhakitiriya Thermincola potens, uko majini kubva kumasystem ese ari maviri anogona kuzivikanwa, kunyangwe paine sangano rakatsauka kubva kune iro reGram-negative bacteria.Takaratidza kuti rimwe remajini aya rinovharira homolog inoshanda yeIscR uye rinogona kunge rine chekuita nekutonga kwe iron-sulfur cluster biogenesis muT. potens.Mamiriro ezvakaita uye biochemical maitiro eT. potens uye E. coli IscR akaburitsa chivakwa chakafanana zvinoshamisa uye akafumura kuchengetedzwa kusingatarisirwe kweiyo yakasarudzika nzira yekutevedzana kwerusarura hunhu hweboka iri rakasiyana remanyorero ekudzora.
