Enzymes
| UniProtKB help_outline | 1,040 proteins |
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Reaction participants Show >> << Hide
- Name help_outline urea Identifier CHEBI:16199 (CAS: 57-13-6) help_outline Charge 0 Formula CH4N2O InChIKeyhelp_outline XSQUKJJJFZCRTK-UHFFFAOYSA-N SMILEShelp_outline NC(N)=O 2D coordinates Mol file for the small molecule Search links Involved in 25 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline cyanamide Identifier CHEBI:16698 (CAS: 420-04-2) help_outline Charge 0 Formula CH2N2 InChIKeyhelp_outline XZMCDFZZKTWFGF-UHFFFAOYSA-N SMILEShelp_outline NC#N 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H2O Identifier CHEBI:15377 (CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,264 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:23056 | RHEA:23057 | RHEA:23058 | RHEA:23059 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Two duplicated genes DDI2 and DDI3 in budding yeast encode a cyanamide hydratase and are induced by cyanamide.
Li J., Biss M., Fu Y., Xu X., Moore S.A., Xiao W.
Two DNA damage-inducible genes in Saccharomyces cerevisiae, DDI2 and DDI3, are identical and encode putative HD domain-containing proteins, whose functions are currently unknown. Because Ddi2/3 also shows limited homology to a fungal cyanamide hydratase that converts cyanamide to urea, we tested t ... >> More
Two DNA damage-inducible genes in Saccharomyces cerevisiae, DDI2 and DDI3, are identical and encode putative HD domain-containing proteins, whose functions are currently unknown. Because Ddi2/3 also shows limited homology to a fungal cyanamide hydratase that converts cyanamide to urea, we tested the enzymatic activity of recombinant Ddi2. To this end, we developed a novel enzymatic assay and determined that the Km value of the recombinant Ddi2/3 for cyanamide is 17.3 ± 0.05 mm, and its activity requires conserved residues in the HD domain. Unlike most other DNA damage-inducible genes, DDI2/3 is only induced by a specific set of alkylating agents and surprisingly is strongly induced by cyanamide. To characterize the biological function of DDI2/3, we sequentially deleted both DDI genes and found that the double mutant was unable to metabolize cyanamide and became much more sensitive to growth inhibition by cyanamide, suggesting that the DDI2/3 genes protect host cells from cyanamide toxicity. Despite the physiological relevance of the cyanamide induction, DDI2/3 is not involved in its own transcriptional regulation. The significance of cyanamide hydratase activity and its induced expression is discussed. << Less
Comments
Published in Stransky, H. and Amberger, A. Isolation and properties of a cyanamide hydratase (EC 4.2.1) from Myrothecium verrucaria. Z. Pflanzenphysiol. 70 (1973) 74–87.