L-Arginine CAS: 74-79-3 99% Dawb crystalline hmoov los yog crystalline hmoov
| Catalog Number | xwm 90323 |
| Khoom npe | L-Arginine |
| CAS | 74-79-3 ib |
| Molecular Formula | C6H14N4O2 |
| Molecular Luj | 174.20 Nws |
| Cov ntaub ntawv khaws cia | Ambient |
| Harmonized tariff Code | 29252900 ib |
Khoom Specification
| Qhov tshwm sim | Dawb crystalline hmoov los yog crystalline hmoov |
| Assay | 99% |
| Kev txheeb xyuas | Infrared Absorption |
| Poob rau ziab | ≤ 0.5% |
| Chromatographic purity | Tsis pub ntau tshaj 0.5% ntawm ib tus neeg impurity pom; Tsis pub ntau tshaj 2.0% ntawm tag nrho impurities pom |
| Residue ntawm Ignition | ≤ 0.3% |
| Cov hlau hnyav (PB) | ≤ 0.0015% |
| Hlau (raws li Fe) | ≤ 0.003% |
| Sulfate (raws li SO4) | ≤ 0.03% |
| Usp qib | USP 33 |
| Chloride (CI) | ≤ 0.05% |
| Kev sib hloov tshwj xeeb [ α ] D 2 5 | +26.3 ° ~ +27.7 ° C |
Lub tshuab ntawm Mycobacterium smegmatis G (MbsG), ib qho flavin-dependent l-lysine monooxygenase, tau tshawb xyuas nyob rau hauv lub xeev ruaj khov thiab ceev cov tshuaj tiv thaiv uas siv thawj thiab hnyav kinetic isotope teebmeem, substrate analogs, pH thiab hnyav viscosity teebmeem raws li kev sojntsuam.Cov txiaj ntsig tau qhia tias l-lysine khi ua ntej NAD(P)H, uas ua rau txo qis tus nqi tas li rau kev txo qis flavin.l-lysine khi tsis muaj kev cuam tshuam rau tus nqi ntawm flavin oxidation, uas tshwm sim nyob rau hauv ib-kauj ruam txheej txheem yam tsis muaj kev soj ntsuam ntawm ib tug C4a-hydroperoxyflavin intermediate.Cov teebmeem zoo sib xws tau txiav txim siab nrog ntau cov substrate analogs.Flavin oxidation yog pH ywj siab thaum lub kcat / Km thiab kred / KD pH profiles rau NAD(P)H nthuav tawm ib qho pKa qhov tseem ceeb ntawm ∼6.0, nrog kev ua haujlwm nce ntxiv thaum pH txo qis.Thaum qis pH, cov enzyme ua ntau dua, ua kom muaj hydrogen peroxide thiab superoxide ntau dua.Hydride hloov yog ib feem ntawm tus nqi-txheej ntawm nruab nrab pH thiab ua ntau tus nqi txwv ntawm qhov pH.Ib qho kev cuam tshuam ntawm cov kuab tshuaj viscosity ntawm kcat / Km rau NAD (P) H tau pom ntawm nruab nrab pH thaum lub cev hnyav viscosity tshwm sim ntawm qis pH.Ua ke, cov txiaj ntsig tau qhia txog cov txheej txheem tshwj xeeb uas qhov kev txwv tus nqi thiab pH-sensitive conformational hloov tshwm sim nyob rau hauv lub reductive ib nrab-reactions, uas cuam tshuam rau cov efficiency ntawm lysine hydroxylation.
