Parthenolide Inhibits Tubulin Carboxypeptidase Activity
نویسندگان
چکیده
منابع مشابه
Parthenolide inhibits tubulin carboxypeptidase activity.
Microtubules are centrally involved in cell division, being the principal components of mitotic spindle. Tubulin, the constituent of microtubules, can be cyclically modified on its alpha-subunit by enzymatic removal of the COOH-terminal tyrosine residue by an ill-defined tubulin carboxypeptidase (TCP) and its readdition by tubulin tyrosine ligase (TTL). We and others have previously shown that ...
متن کاملAssociation of tubulin carboxypeptidase with microtubules in living cells.
Tubulin carboxypeptidase is the enzyme that releases the C-terminal tyrosine from alpha-tubulin, converting tyrosine-terminated (Tyr) to detyrosinated (Glu) tubulin. The present study demonstrates that this enzyme is associated with microtubules in living cells. We extracted cultured cells (COS-7) with Triton X-100 under microtubule-stabilizing conditions and found tubulin carboxypeptidase acti...
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Mycoplasma salivarium produced citrulline, ammonia, and ATP from N-benzoylglycyl-L-arginine. The activity was inhibited by EDTA and was therefore concluded to be due to an arginine-specific carboxypeptidase. The activity was also found to exist in M. orale, M. buccale, M. faucium, and M. hominis.
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Detyrosination of α-tubulin seems to be conserved in all eukaryotes. However, its biological function in plants has remained obscure. A conserved C-terminal tyrosine is removed by a still unidentified tubulin-tyrosine carboxypeptidase (TTC) and can be religated by a tubulin-tyrosine ligase (TTL). To obtain insight into the still elusive biological function of this detyrosination-tyrosination cy...
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One approach to the general problem of the structure and function of enzymes involves proteolytic hydrolysis with examination of the structure, composition, and catalytic activity of the hydrolysis products. Fragments retaining partial enzyme activity have been obtained from trypsin and pepsin by autolysis (2, 3) and from trypsinogen by peptic digestion (4). Over half of the amino acid residues...
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ژورنال
عنوان ژورنال: Cancer Research
سال: 2007
ISSN: 0008-5472,1538-7445
DOI: 10.1158/0008-5472.can-06-3732