Protein
Polynucleotide 3'-phosphatase ZDP
Organism
Arabidopsis thaliana
Function
Nick-sensing 3'-phosphoesterase involved in a base excision repair pathway required for active DNA demethylation. The N-terminal DNA-binding domain binds specifically to gap sites and sharply bends the target DNA. Lacks 5'-kinase activity but is capable of 3'-phosphoglycolate end processing. Inactive on 3'-alpha,beta-unsaturated aldehyde (3'-dRP). Protects partially genes from transcriptional silencing by preventing promoter DNA hypermethylation.
Similarity
In the C-terminal section; belongs to the DNA 3' phosphatase family.
Sequence
MITVAPFVSLRFQFPLYIINRSTLFFRERTQYLVYNTCHILRTTAKTMPVVAEYAKSNRSSCRSCSNKIAVKSLRLGLISKGRGGVDMTRWHHFDCFPTDSESIASVDDIQGLSALEKEDQDALTKLVEQCGKVPAKKPDEKKGKAKKHIMGPKGLTKAATSSKVIADNAKSSRSSCNRCSQTIVSKDLRVGLVTEDSRGFDITRWHHLGCFPIDFHPIDSVEDIGGYSSLEKGDQMELKYLAEVNKKDKTLIDDVQKMDEGDDEAIADNELTEETKKGKHSPVAKLVEQPGEPAKEDEDEESKKPASDEISEQKTKDVKNSPDSSKVISEYAKSSRSTCKKCSQTIAAKELRLGLVTRNFRGFDMKQWHHLGCFPVDSDPIVSVEDIGGFSELQSGDQDALKELVQQCGKQTLVDKMDEDNDDTEAKIKLTEETNKRKHSEVGEMVEEDESLTKAKQQMAKTHKVNMSESTSQVEVEAEITLSASDVKDKYRDANLLPKWKAFETVIFLERDDGLNDSEKIAAFDFDGCLAKTSVKIVGADAWSLMYPSIPEKLQSLHDQGYKLVIFTNESNIDRWKNKRQAAVDSKIGRLNSFIERVKVPIQVFIACGVSSSGGKGGKDDLYRKPKAGMWQLMKKHFNSGIAIDMDKSFYVGDAAGRKMDHSDADIKFAQASGLKFFTPEEYFIPSSTSPGT