Involved in repair of UV radiation-induced DNA damage. Catalyzes the photoreactivation of pyrimidine [6-4] pyrimidone photoproduct (6-4 products). Binds specifically to DNA containing 6-4 products and repairs these lesions in a visible light-dependent manner. Not required for repair of cyclobutane pyrimidine dimer (CPD). Arabidopsis thaliana (taxid: 3702) EC: 4EC: .EC: 1EC: .EC: 9EC: 9EC: .EC: 1EC: 3
Blue light-dependent regulator of the circadian feedback loop. Inhibits CLOCK|NPAS2-ARNTL E box-mediated transcription. Acts, in conjunction with CRY2, in maintaining period length and circadian rhythmicity. Has no photolyase activity. Capable of translocating circadian clock core proteins such as PER proteins to the nucleus. May inhibit CLOCK|NPAS2-ARNTL transcriptional activity through stabilizing the unphosphorylated form of ARNTL.
Blue light-dependent regulator of the circadian feedback loop. Inhibits CLOCK|NPAS2-ARNTL E box-mediated transcription. Acts, in conjunction with CRY2, in maintaining period length and circadian rhythmicity. Has no photolyase activity. Capable of translocating circadian clock core proteins such as PER proteins to the nucleus. May inhibit CLOCK|NPAS2-ARNTL transcriptional activity through stabilizing the unphosphorylated form of ARNTL.
Blue light-dependent regulator of the circadian feedback loop. Inhibits CLOCK|NPAS2-ARNTL E box-mediated transcription. Acts, in conjunction with CRY2, in maintaining period length and circadian rhythmicity. Has no photolyase activity. Capable of translocating circadian clock core proteins such as PER proteins to the nucleus. May inhibit CLOCK|NPAS2-ARNTL transcriptional activity through stabilizing the unphosphorylated form of ARNTL.
Blue light-dependent regulator of the circadian feedback loop. Inhibits CLOCK|NPAS2-ARNTL E box-mediated transcription. Acts, in conjunction with CRY2, in maintaining period length and circadian rhythmicity. Has no photolyase activity. Capable of translocating circadian clock core proteins such as PER proteins to the nucleus. May inhibit CLOCK|NPAS2-ARNTL transcriptional activity through stabilizing the unphosphorylated form of ARNTL.
Blue light-dependent regulator of the circadian feedback loop. Inhibits CLOCK|NPAS2-ARNTL E box-mediated transcription. Acts, in conjunction with CRY2, in maintaining period length and circadian rhythmicity. Has no photolyase activity. Capable of translocating circadian clock core proteins such as PER proteins to the nucleus. May inhibit CLOCK|NPAS2-ARNTL transcriptional activity through stabilizing the unphosphorylated form of ARNTL.
Score = 56.6 bits (135), Expect = 4e-08, Method: Compositional matrix adjust.
Identities = 23/50 (46%), Positives = 31/50 (62%)
Query: 1 MPKEYIYEPWTAPLTIQTRAKCIIGRDYPAPVVSHDSASKECKRKLGEAY 50
P YIYEPW AP ++Q A CIIG DYP P+V+H S+ ++ + Y
Sbjct: 457 FPSRYIYEPWNAPESVQKAANCIIGVDYPRPIVNHAETSRLNIERMKQIY 506
Blue light-dependent regulator of the circadian feedback loop. Inhibits CLOCK|NPAS2-ARNTL E box-mediated transcription. Acts, in conjunction with CRY2, in maintaining period length and circadian rhythmicity. Has no photolyase activity. Capable of translocating circadian clock core proteins such as PER proteins to the nucleus. May inhibit CLOCK|NPAS2-ARNTL transcriptional activity through stabilizing the unphosphorylated form of ARNTL.
Blue light-dependent regulator of the circadian feedback loop. Inhibits CLOCK|NPAS2-ARNTL E box-mediated transcription. Acts, in conjunction with CRY2, in maintaining period length and circadian rhythmicity. Has no photolyase activity. Capable of translocating circadian clock core proteins such as PER proteins to the nucleus. May inhibit CLOCK|NPAS2-ARNTL transcriptional activity through stabilizing the unphosphorylated form of ARNTL.
Score = 55.5 bits (132), Expect = 1e-07, Method: Compositional matrix adjust.
Identities = 23/50 (46%), Positives = 33/50 (66%)
Query: 1 MPKEYIYEPWTAPLTIQTRAKCIIGRDYPAPVVSHDSASKECKRKLGEAY 50
P +YIY+PW AP IQ AKC+IG +YP P+V+H AS+ ++ + Y
Sbjct: 439 FPAKYIYDPWNAPEGIQKVAKCLIGVNYPKPMVNHAEASRLNIERMKQIY 488
Blue light-dependent regulator of the circadian feedback loop. Inhibits CLOCK|NPAS2-ARNTL E box-mediated transcription. Acts, in conjunction with CRY2, in maintaining period length and circadian rhythmicity. Has no photolyase activity. Capable of translocating circadian clock core proteins such as PER proteins to the nucleus. May inhibit CLOCK|NPAS2-ARNTL transcriptional activity through stabilizing the unphosphorylated form of ARNTL.
Spalax judaei (taxid: 134510)
Close Homologs in the Non-Redundant Database Detected by BLAST
Score = 41.0 bits (96), Expect = 2e-05
Identities = 15/42 (35%), Positives = 24/42 (57%), Gaps = 1/42 (2%)
Query: 1 MPKEYIYEPWTAPLTIQTRAKCIIGRDYPAPVVSHDSASKEC 42
+P E+I+ PW AP ++ A +G +YP P+V D A +
Sbjct: 429 LPTEWIHHPWDAPESVLQAAGVELGSNYPLPIVGLDEA-RAR 469
At least five major families of cryptochomes and photolyases share FAD cofactor binding, sequence homology, and the ability to react to short wavelengths of visible light. Photolysases are responsible for light-dependent DNA repair by removal of two types of uv-induced DNA dimerizations. Cryptochromes have other functions, often regulatory and often largely unknown, which may include circadian clock entrainment and control of development. Members of this subfamily are known so far only in plants; they may show some photolyase activity in vitro but appear mostly to be regulatory proteins that respond to blue light. Length = 475
>gnl|CDD|223492 COG0415, PhrB, Deoxyribodipyrimidine photolyase [DNA replication, recombination, and repair]
; InterPro: IPR005101 This entry represents a multi-helical domain composed of two all-alpha subdomains that is found as the C-terminal domain in cryptochrome proteins, as well as at the N-terminal of DNA photolyase where it acts as a FAD-binding domain (the N-terminal of DNA photolyase binds a light-harvesting cofactor). Photolyases and cryptochromes are related flavoproteins that bind FAD. Photolyases harness the energy of blue light to repair DNA damage by removing pyrimidine dimers. Cryptochromes (CRY1 and CRY2) are blue light photoreceptors that mediate blue light-induced gene expression [, ]. DNA photolyases are DNA repair enzymes that repair mismatched pyrimidine dimers induced by exposure to ultra-violet light. They bind to UV-damaged DNA containing pyrimidine dimers and, upon absorbing a near-UV photon (300 to 500 nm), they catalyse dimer splitting, breaking the cyclobutane ring joining the two pyrimidines of the dimer so as to split them into the constituent monomers; this process is called photoreactivation. DNA photolyases require two choromophore-cofactors for their activity. All monomers contain a reduced FAD moiety, and, in addition, either a reduced pterin or 8-hydroxy-5-diazaflavin as a second chromophore. Either chromophore may act as the primary photon acceptor, peak absorptions occurring in the blue region of the spectrum and in the UV-B region, at a wavelength around 290nm [, ].; GO: 0003913 DNA photolyase activity, 0006281 DNA repair; PDB: 3UMV_A 3ZXS_A 1DNP_A 2XRZ_B 2XRY_A 2VTB_A 2J4D_B 2IJG_X 3TVS_A 2E0I_D ....
>TIGR02766 crypt_chrom_pln cryptochrome, plant family
At least five major families of cryptochomes and photolyases share FAD cofactor binding, sequence homology, and the ability to react to short wavelengths of visible light. Photolysases are responsible for light-dependent DNA repair by removal of two types of uv-induced DNA dimerizations. Cryptochromes have other functions, often regulatory and often largely unknown, which may include circadian clock entrainment and control of development. Members of this subfamily are known so far only in plants; they may show some photolyase activity in vitro but appear mostly to be regulatory proteins that respond to blue light.
This model describes a narrow clade of cyanobacterial deoxyribodipyrimidine photo-lyase. This group, in contrast to several closely related proteins, uses a chromophore that, in other lineages is modified further to become coenzyme F420. This chromophore is called 8-HDF in most articles on the DNA photolyase and FO in most literature on coenzyme F420.
>1dnp_A DNA photolyase; DNA repair, electron transfer, excitation energy transfer, carbon-carbon, lyase (carbon-carbon); HET: DNA FAD MHF; 2.30A {Escherichia coli} SCOP: a.99.1.1 c.28.1.1