DL-Methionine Cas: 59-51-8 99-101% Dawb mus rau dawb crystal hmoov
| Catalog Number | xwm 90288 |
| Khoom npe | DL-Methionine |
| CAS | 63-68-3 |
| Molecular Formula | C5H11NO2S |
| Molecular Luj | 149.21134 ib |
| Cov ntaub ntawv khaws cia | Ambient |
| Harmonized tariff Code | 29304090 ib |
Khoom Specification
| Assay | 99 - 101% |
| Qhov tshwm sim | Dawb mus rau dawb crystal |
| Qib | EP 7.0 |
| pH | 5.4-6.1 |
| SO4 | 200 ppm max |
| Pb | 20 ppm max |
| Poob rau ziab | 0.5% max |
| Sulfated tshauv | 0.1% max |
| Cl | 200 ppm max |
| Yam khoom | 0.2% max |
| Tus kheej | IR |
Cellulose yog cov khoom siv txuas ntxiv dua tshiab tshaj plaws hauv ntiaj teb thiab yog ib feem tseem ceeb ntawm cov nroj tsuag cell phab ntsa.Nyob rau hauv cov nroj tsuag vascular, cellulose synthesis yog catalyzed los ntawm ib tug loj, plasma membrane-localized cellulose synthase complex (CSC), visualized raws li ib tug hexameric rosette qauv.Peb qhov tshwj xeeb cellulose synthase (CESA) isoforms yog xav tau rau CSC sib dhos thiab ua haujlwm.Txawm li cas los xij, elucidation ntawm tus lej lossis stoichiometry ntawm CESAs hauv CSC tseem tsis tau paub.Hauv txoj kev tshawb no, peb qhia 1: 1: 1 stoichiometry ntawm peb Arabidopsis thaliana Secondary cell phab ntsa isozymes: CESA4, CESA7, thiab CESA8.Qhov piv txwv no tau txiav txim siab siv txoj kev yooj yim tab sis zoo nkauj ntawm kev tiv thaiv kab mob ntau yam siv cov tshuaj tiv thaiv kab mob tshwj xeeb isoform thiab (35) S-labeled protein cov qauv rau txhua CESA.Tsis tas li ntawd, kev soj ntsuam equimolar stoichiometry tau pom tias tau kho raws lub axis ntawm qia, uas sawv cev rau kev loj hlob gradient.Peb cov txiaj ntsig tau ntxiv cov kev soj ntsuam spectroscopic tsis ntev los no taw qhia txog 18-chain cellulose microfibril.Ua ke, peb npaj siab tias CSC yog tsim los ntawm hexamer ntawm catalytically active CESA trimers, nrog rau txhua CESA nyob rau hauv equimolar nqi.Qhov kev tshawb pom no yog qhov tseem ceeb ua ntej hauv kev nkag siab yuav ua li cas CESAs koom ua ke los tsim cov kev txiav txim siab dua, uas yog qhov tseem ceeb ntawm kev txiav txim siab ntawm cellulose microfibril thiab cell phab ntsa.
