Post-translational modification is essential for catalytic activity of nitrile hydratase
نویسندگان
چکیده
منابع مشابه
The Alpha Subunit of Nitrile Hydratase Is Sufficient for Catalytic Activity and Post-Translational Modification
Nitrile hydratases (NHases) possess a mononuclear iron or cobalt cofactor whose coordination environment includes rare post-translationally oxidized cysteine sulfenic and sulfinic acid ligands. This cofactor is located in the α-subunit at the interfacial active site of the heterodimeric enzyme. Unlike canonical NHases, toyocamycin nitrile hydratase (TNHase) from Streptomyces rimosus is a unique...
متن کاملPost-translational modifications in nitrile hydratase family
Fe-type nitrile hydratase (NHase) from Rhodococcus sp. N771 has a novel non-heme iron active center with two post-translationally modified cysteine residues, cysteine-sulfenic and -sulfinic acids. The modified residues are involved in the sequence motif, Cys-Xxx-Leu-Cys-Ser-Cys (Xxx = Ser(Fetype)/Thr(Co-type)), which is conserved among all known NHases as well as in the homologous enzyme, thioc...
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Nitrile is a functional group that usually is transformed to amides or carboxylic acids under strong reaction conditions in acidic or basic media and high temperatures. Amides have also been prepared from nitriles at room temperature using strong oxidizing agents such as hydrogen peroxide or sodium superoxide in DMSO. On the other hand biocatalytic hydrolysis of nitriles mediated by nitrilase, ...
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Post-translational modifications (PTMs) have been recognized to impact protein function in two ways: (i) orthosterically, via direct recognition by protein domains or through interference with binding; and (ii) allosterically, via conformational changes induced at the functional sites. Because different chemical types of PTMs elicit different structural alterations, the effects of combinatorial...
متن کاملPost-translational modification by SUMO.
Post-translational modifications (PTMs) are chemical alterations to a protein following translation, regulating stability and function. Reversible phosphorylation is an example of an important and well studied PTM involved in a number of cellular processes. SUMOylation is another PTM known to modify a large number of proteins and plays a role in various cellular processes including: cell cycle ...
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ژورنال
عنوان ژورنال: Protein Science
سال: 2000
ISSN: 0961-8368,1469-896X
DOI: 10.1110/ps.9.5.1024