7dpk

Structural highlights

Function

GSDA_ARATH Catalyzes the hydrolytic deamination of guanosine, producing xanthosine and ammonia. Deaminates exclusively guanosine and 2'-deoxyguanosine but no other aminated purines, pyrimidines, or pterines. Deamination of guanosine by GSDA is the only source of xanthosine production in Arabidopsis.^[1]

See Also

• Deaminase 3D structures

References

1. ↑ Dahncke K, Witte CP. Plant purine nucleoside catabolism employs a guanosine deaminase required for the generation of xanthosine in Arabidopsis. Plant Cell. 2013 Oct;25(10):4101-9. doi: 10.1105/tpc.113.117184. Epub 2013 Oct, 15. PMID:24130159 doi:http://dx.doi.org/10.1105/tpc.113.117184