Ketopantoate hydroxymethyltransferase. II. Physical, catalytic, and regulatory properties.
نویسندگان
چکیده
منابع مشابه
determination of some physical and mechanical properties red bean
چکیده: در این تحقیق، برخی خواص فیزیکی و مکانیکی لوبیا قرمز به-صورت تابعی از محتوی رطوبت بررسی شد. نتایج نشان داد که رطوبت بر خواص فیزیکی لوبیا قرمز شامل طول، عرض، ضخامت، قطر متوسط هندسی، قطر متوسط حسابی، سطح تصویر شده، حجم، چگالی توده، تخلخل، وزن هزار دانه و زاویه ی استقرار استاتیکی در سطح احتمال 1 درصد اثر معنی داری دارد. به طوری که با افزایش رطوبت از 54/7 به 12 درصد بر پایه خشک طول، عرض، ضخام...
15 صفحه اولExperimental and Metabolic Modeling Evidence for a Folate-Cleaving Side-Activity of Ketopantoate Hydroxymethyltransferase (PanB)
Tetrahydrofolate (THF) and its one-carbon derivatives, collectively termed folates, are essential cofactors, but are inherently unstable. While it is clear that chemical oxidation can cleave folates or damage their pterin precursors, very little is known about enzymatic damage to these molecules or about whether the folate biosynthesis pathway responds adaptively to damage to its end-products. ...
متن کاملCatalytic and thermodynamic properties of tetrahydromethanopterin-dependent serine hydroxymethyltransferase from Methanococcus jannaschii.
The reaction catalyzed by serine hydroxymethyltransferase (SHMT), the transfer of Cbeta of serine to tetrahydropteroylglutamate, represents in Eucarya and Eubacteria a major source of one-carbon (C1) units for several essential biosynthetic processes. In many Archaea, C1 units are carried by modified pterin-containing compounds, which, although structurally related to tetrahydropteroylglutamate...
متن کاملPhysical Separatino of the Catalytic and Regulatory Proteins of Hepatic
Both the catalytic protein (C) and the guanine nucleotide-binding regulatory protein (G/F) of rabbit hepatic adenylate cyclase were solubilized in active form in sodium cholate at high ionic strength. Upon precipitation by (NH4)*S04, C was selectively aggregated such that it was largely excluded from Ultrogel AcA 34 when chromatographed in cholate solution at high ionic strength. G/F eluted wit...
متن کاملPurification and regulatory properties of mung bean (vigna radiata L.) serine hydroxymethyltransferase.
Serine hydroxymethyltransferase, the first enzyme in the pathway for interconversion of C(1) fragments, was purified to homogeneity for the first time from any plant source. The enzyme from 72-h mung bean (Vigna radiata L.) seedlings was isolated using Blue Sepharose CL-6B and folate-AH-Sepharose-4B affinity matrices and had the highest specific activity (1.33 micromoles of HCHO formed per minu...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1976
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(17)33413-0