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Deaminase
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| - | <StructureSection load=' | + | <StructureSection load='1p6o' size='350' side='right' caption='Structure of yeast cytosine deaminase complex with pyrimidine-based inhibitor, acetate, Ca+2 (green) and Zn+2 (grey) ions (PDB entry [[1p6o]])' scene='55/551217/Cv/1'> |
| + | __TOC__ | ||
== Function == | == Function == | ||
'''Deaminase''' removes an amine group from an amino acid and the rest of the molecule is recycled. <br /> | '''Deaminase''' removes an amine group from an amino acid and the rest of the molecule is recycled. <br /> | ||
* '''Cytosine deaminase''' (CDA) converts cytosine to uracil. <br /> | * '''Cytosine deaminase''' (CDA) converts cytosine to uracil. <br /> | ||
| - | * '''Cytidine deaminase''' (CDDA) converts cytidine to uridine. <ref>PMID: | + | * '''Cytidine deaminase''' (CDDA) converts cytidine to uridine. <ref>PMID:12651944</ref> <br /> |
* '''5-methylcytosine deaminase''' (MCDA) produces thymine. <br /> | * '''5-methylcytosine deaminase''' (MCDA) produces thymine. <br /> | ||
* '''Guanine deaminase''' (GDA) converts guanine to xanthine. <ref>PMID:22662200</ref><br /> | * '''Guanine deaminase''' (GDA) converts guanine to xanthine. <ref>PMID:22662200</ref><br /> | ||
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* '''L-serine deaminase''' (LSD) converts L-serine to pyruvate.<br /> | * '''L-serine deaminase''' (LSD) converts L-serine to pyruvate.<br /> | ||
* '''D-serine deaminase''' (DSD) converts D-serine to pyruvate.<br /> | * '''D-serine deaminase''' (DSD) converts D-serine to pyruvate.<br /> | ||
| + | * '''Aminofutalosine deaminase''' deaminates aminofutalosine which is an intermediate in the menaquinone biosynthesis in ''Helicobacter pylori'' <ref>PMID:34077175</ref>. <br /> | ||
== Relevance == | == Relevance == | ||
Cytosine deaminase is used in cancer therapy. After treatment by 5-fluorouracil, the cytosine deaminase gene is introduced to the tumor resulting in intratumor chemotherapy. <ref>PMID:17938268</ref> | Cytosine deaminase is used in cancer therapy. After treatment by 5-fluorouracil, the cytosine deaminase gene is introduced to the tumor resulting in intratumor chemotherapy. <ref>PMID:17938268</ref> | ||
| - | </StructureSection> | ||
| - | == | + | == Disease == |
| - | + | Mutation in adenine deaminase results in deficiency of the enzyme and is the cause of severe combined immunodeficiency (SCID). | |
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| - | + | == Structural highlights == | |
| - | + | The <scene name='55/551217/Cv/3'>active site of cytosine deaminase contains a catalytically active zinc</scene> atom.<ref>PMID:12906827</ref> | |
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| - | + | == 3D Structures of deaminase == | |
| + | [[Deaminase 3D structures]] | ||
| - | + | </StructureSection> | |
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| - | **[[3r0x]], [[3r0z]] – DSD – ''Salmonella enterica''<BR /> | ||
| - | **[[3ss7]], [[3ss9]] – EcDSD + PLP <BR /> | ||
| - | **[[3gwq]] – DSD - ''Burkholderia xenovorans''<BR /> | ||
| - | }} | ||
== References == | == References == | ||
<references/> | <references/> | ||
[[Category:Topic Page]] | [[Category:Topic Page]] | ||
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References
- ↑ Bransteitter R, Pham P, Scharff MD, Goodman MF. Activation-induced cytidine deaminase deaminates deoxycytidine on single-stranded DNA but requires the action of RNase. Proc Natl Acad Sci U S A. 2003 Apr 1;100(7):4102-7. Epub 2003 Mar 21. PMID:12651944 doi:http://dx.doi.org/10.1073/pnas.0730835100
- ↑ Egeblad L, Welin M, Flodin S, Graslund S, Wang L, Balzarini J, Eriksson S, Nordlund P. Pan-Pathway Based Interaction Profiling of FDA-Approved Nucleoside and Nucleobase Analogs with Enzymes of the Human Nucleotide Metabolism. PLoS One. 2012;7(5):e37724. Epub 2012 May 25. PMID:22662200 doi:10.1371/journal.pone.0037724
- ↑ Feng M, Harijan RK, Harris LD, Tyler PC, Frohlich RFG, Brown M, Schramm VL. Aminofutalosine Deaminase in the Menaquinone Pathway of Helicobacter pylori. Biochemistry. 2021 Jun 22;60(24):1933-1946. doi: 10.1021/acs.biochem.1c00215., Epub 2021 Jun 2. PMID:34077175 doi:http://dx.doi.org/10.1021/acs.biochem.1c00215
- ↑ Negroni L, Samson M, Guigonis JM, Rossi B, Pierrefite-Carle V, Baudoin C. Treatment of colon cancer cells using the cytosine deaminase/5-fluorocytosine suicide system induces apoptosis, modulation of the proteome, and Hsp90beta phosphorylation. Mol Cancer Ther. 2007 Oct;6(10):2747-56. PMID:17938268 doi:http://dx.doi.org/10.1158/1535-7163.MCT-07-0040
- ↑ Ireton GC, Black ME, Stoddard BL. The 1.14 A crystal structure of yeast cytosine deaminase: evolution of nucleotide salvage enzymes and implications for genetic chemotherapy. Structure. 2003 Aug;11(8):961-72. PMID:12906827
