Protein Bloomovog sindroma
Protein Bloomovog sindroma je protein koji je kod ljudi kodiran genom BLM sa hromosoma 15, koji nije eksprimiran u Bloomovom sindromu.[5]
Genski proizvod Bloomovog sindroma povezan je sa RecQ podskupom DNK helikaze koji sadrži DExH kutiju i ima aktivnosti DNK stimulirane ATPaze i ATP-ovisne DNK helikaze. Mutacije koje uzrokuju Bloomov sindrom deletiraju ili mijenjaju motive helikaze i mogu onemogućiti aktivnost 3' → 5' helikaze. Normalni protein može djelovati na suzbijanje neodgovarajuće homologne rekombinacije.[6]
Aminokiselinska sekvenca
urediDužina polipeptidnog lanca je 1.417 aminokiselina, a molekulska težina 159.000 Da.[5]
10 | 20 | 30 | 40 | 50 | ||||
---|---|---|---|---|---|---|---|---|
MAAVPQNNLQ | EQLERHSART | LNNKLSLSKP | KFSGFTFKKK | TSSDNNVSVT | ||||
NVSVAKTPVL | RNKDVNVTED | FSFSEPLPNT | TNQQRVKDFF | KNAPAGQETQ | ||||
RGGSKSLLPD | FLQTPKEVVC | TTQNTPTVKK | SRDTALKKLE | FSSSPDSLST | ||||
INDWDDMDDF | DTSETSKSFV | TPPQSHFVRV | STAQKSKKGK | RNFFKAQLYT | ||||
TNTVKTDLPP | PSSESEQIDL | TEEQKDDSEW | LSSDVICIDD | GPIAEVHINE | ||||
DAQESDSLKT | HLEDERDNSE | KKKNLEEAEL | HSTEKVPCIE | FDDDDYDTDF | ||||
VPPSPEEIIS | ASSSSSKCLS | TLKDLDTSDR | KEDVLSTSKD | LLSKPEKMSM | ||||
QELNPETSTD | CDARQISLQQ | QLIHVMEHIC | KLIDTIPDDK | LKLLDCGNEL | ||||
LQQRNIRRKL | LTEVDFNKSD | ASLLGSLWRY | RPDSLDGPME | GDSCPTGNSM | ||||
KELNFSHLPS | NSVSPGDCLL | TTTLGKTGFS | ATRKNLFERP | LFNTHLQKSF | ||||
VSSNWAETPR | LGKKNESSYF | PGNVLTSTAV | KDQNKHTASI | NDLERETQPS | ||||
YDIDNFDIDD | FDDDDDWEDI | MHNLAASKSS | TAAYQPIKEG | RPIKSVSERL | ||||
SSAKTDCLPV | SSTAQNINFS | ESIQNYTDKS | AQNLASRNLK | HERFQSLSFP | ||||
HTKEMMKIFH | KKFGLHNFRT | NQLEAINAAL | LGEDCFILMP | TGGGKSLCYQ | ||||
LPACVSPGVT | VVISPLRSLI | VDQVQKLTSL | DIPATYLTGD | KTDSEATNIY | ||||
LQLSKKDPII | KLLYVTPEKI | CASNRLISTL | ENLYERKLLA | RFVIDEAHCV | ||||
SQWGHDFRQD | YKRMNMLRQK | FPSVPVMALT | ATANPRVQKD | ILTQLKILRP | ||||
QVFSMSFNRH | NLKYYVLPKK | PKKVAFDCLE | WIRKHHPYDS | GIIYCLSRRE | ||||
CDTMADTLQR | DGLAALAYHA | GLSDSARDEV | QQKWINQDGC | QVICATIAFG | ||||
MGIDKPDVRF | VIHASLPKSV | EGYYQESGRA | GRDGEISHCL | LFYTYHDVTR | ||||
LKRLIMMEKD | GNHHTRETHF | NNLYSMVHYC | ENITECRRIQ | LLAYFGENGF | ||||
NPDFCKKHPD | VSCDNCCKTK | DYKTRDVTDD | VKSIVRFVQE | HSSSQGMRNI | ||||
KHVGPSGRFT | MNMLVDIFLG | SKSAKIQSGI | FGKGSAYSRH | NAERLFKKLI | ||||
LDKILDEDLY | INANDQAIAY | VMLGNKAQTV | LNGNLKVDFM | ETENSSSVKK | ||||
QKALVAKVSQ | REEMVKKCLG | ELTEVCKSLG | KVFGVHYFNI | FNTVTLKKLA | ||||
ESLSSDPEVL | LQIDGVTEDK | LEKYGAEVIS | VLQKYSEWTS | PAEDSSPGIS | ||||
LSSSRGPGRS | AAEELDEEIP | VSSHYFASKT | RNERKRKKMP | ASQRSKRRKT | ||||
ASSGSKAKGG | SATCRKISSK | TKSSSIIGSS | SASHTSQATS | GANSKLGIMA | ||||
PPKPINRPFL | KPSYAFS |
Rekombinacija tokom mejoze je često inicirana prekidom dvostrukog lanca DNK (DSB). Tokom rekombinacije, dijelovi DNK na 5' krajevima prekida se odsijecaju u procesu koji se zove resekcija. U koraku invazije lanca koji slijedi, nadvišena 3' kraj slomljenog molekula DNK tada "napada" DNK homolognog hromosoma koji nije slomljen. Nakon invazije lanca, daljnji slijed događaja može pratiti bilo koji od dva glavna puta koji vode do krosingovera (CO) ili bez njega (NCO) rekombinanta (pogledajte Genetička rekombinacija i donji dio slike u ovom odjeljku).
Pupajući kvasac Saccharomyces cerevisiae kodira ortolog proteina Bloomovog sindroma (BLM) koji je označen kao Sgs1 (mali supresor rasta 1). Sgs1(BLM) je helikaza koja funkcionira popravkama homolognom rekombinacijom DSB-a. Čini se da je helikaza Sgs1(BLM) centralni regulator većine rekombinacijskih događaja koji se dešavaju tokom mejoza uS. cerevisiae.[7] Tokom normalne mejoze Sgs1(BLM) je odgovoran za usmjeravanje rekombinacije ka alternativnom formiranju ili ranih NCO-a ili Hollidayevih spona zglobnih molekula, pri čemu se potonji kasnije rješavaju kao COs.[7]
U biljci Arabidopsis thaliana, homolozi Sgs1(BLM) helikaze djeluju kao glavne barijere za mejotsko stvaranje CO.[8] Smatra se da ove helikaze istiskuju invazivni lanac, omogućavajući njegovo udvostručavanje s drugim 3'-prepustnim krajem DSB-a, što dovodi do formiranja NCO rekombinantnog procesa postupkom koji se naziva udvostručavanje lanca ovisno o sintezi (SDSA) (vidi Genetička rekombinacija i sliku na ovaj odeljak). Procjenjuje se da je samo oko 4% DSB-a popravljeno rekombinacijom CO,[9] Sequela-Arnaud et al.[8] sugerirajići da su brojevi CO ograničeni zbog dugoročnih troškova rekombinacije CO, odnosno razbijanja povoljnih genetičkih kombinacija alela stvorenih prošlim prirodnim odabiranjem.
Interakcije
urediPokazalo se da protein Bloomovog sindroma reaguje sa:
Reference
uredi- ^ a b c GRCh38: Ensembl release 89: ENSG00000197299 - Ensembl, maj 2017
- ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000030528 - Ensembl, maj 2017
- ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ a b Karow JK, Chakraverty RK, Hickson ID (januar 1998). "The Bloom's syndrome gene product is a 3'-5' DNA helicase". J Biol Chem. 272 (49): 30611–4. doi:10.1074/jbc.272.49.30611. PMID 9388193.
- ^ "Bloom syndrome". Genetics Home Reference. NIH. Pristupljeno 19. 3. 2013.
- ^ a b De Muyt A, Jessop L, Kolar E, Sourirajan A, Chen J, Dayani Y, Lichten M (2012). "BLM helicase ortholog Sgs1 is a central regulator of meiotic recombination intermediate metabolism". Mol. Cell. 46 (1): 43–53. doi:10.1016/j.molcel.2012.02.020. PMC 3328772. PMID 22500736.
- ^ a b Séguéla-Arnaud M, Crismani W, Larchevêque C, Mazel J, Froger N, Choinard S, Lemhemdi A, Macaisne N, Van Leene J, Gevaert K, De Jaeger G, Chelysheva L, Mercier R (2015). "Multiple mechanisms limit meiotic crossovers: TOP3α and two BLM homologs antagonize crossovers in parallel to FANCM". Proc. Natl. Acad. Sci. U.S.A. 112 (15): 4713–8. Bibcode:2015PNAS..112.4713S. doi:10.1073/pnas.1423107112. hdl:1854/LU-6829814. PMC 4403193. PMID 25825745.
- ^ Crismani W, Girard C, Froger N, Pradillo M, Santos JL, Chelysheva L, Copenhaver GP, Horlow C, Mercier R (2012). "FANCM limits meiotic crossovers". Science. 336 (6088): 1588–90. Bibcode:2012Sci...336.1588C. doi:10.1126/science.1220381. PMID 22723424. S2CID 14570996.
- ^ a b Wang Y, Cortez D, Yazdi P, Neff N, Elledge SJ, Qin J (april 2000). "BASC, a super complex of BRCA1-associated proteins involved in the recognition and repair of aberrant DNA structures". Genes Dev. 14 (8): 927–39. doi:10.1101/gad.14.8.927. PMC 316544. PMID 10783165.
- ^ Beamish H, Kedar P, Kaneko H, Chen P, Fukao T, Peng C, Beresten S, Gueven N, Purdie D, Lees-Miller S, Ellis N, Kondo N, Lavin MF (august 2002). "Functional link between BLM defective in Bloom's syndrome and the ataxia-telangiectasia-mutated protein, ATM". J. Biol. Chem. 277 (34): 30515–23. doi:10.1074/jbc.M203801200. PMID 12034743.
- ^ Jiao R, Bachrati CZ, Pedrazzi G, Kuster P, Petkovic M, Li JL, Egli D, Hickson ID, Stagljar I (juni 2004). "Physical and functional interaction between the Bloom's syndrome gene product and the largest subunit of chromatin assembly factor 1". Mol. Cell. Biol. 24 (11): 4710–9. doi:10.1128/MCB.24.11.4710-4719.2004. PMC 416397. PMID 15143166.
- ^ a b c d Sengupta S, Robles AI, Linke SP, Sinogeeva NI, Zhang R, Pedeux R, Ward IM, Celeste A, Nussenzweig A, Chen J, Halazonetis TD, Harris CC (septembar 2004). "Functional interaction between BLM helicase and 53BP1 in a Chk1-mediated pathway during S-phase arrest". J. Cell Biol. 166 (6): 801–13. doi:10.1083/jcb.200405128. PMC 2172115. PMID 15364958.
- ^ Deans AJ, West SC (24. 12. 2009). "FANCM connects the genome instability disorders Bloom's Syndrome and Fanconi Anemia". Mol. Cell. 36 (6): 943–53. doi:10.1016/j.molcel.2009.12.006. PMID 20064461.
- ^ Sharma S, Sommers JA, Wu L, Bohr VA, Hickson ID, Brosh RM (mart 2004). "Stimulation of flap endonuclease-1 by the Bloom's syndrome protein". J. Biol. Chem. 279 (11): 9847–56. doi:10.1074/jbc.M309898200. PMID 14688284.
- ^ a b Freire R, d'Adda Di Fagagna F, Wu L, Pedrazzi G, Stagljar I, Hickson ID, Jackson SP (august 2001). "Cleavage of the Bloom's syndrome gene product during apoptosis by caspase-3 results in an impaired interaction with topoisomerase IIIalpha". Nucleic Acids Res. 29 (15): 3172–80. doi:10.1093/nar/29.15.3172. PMC 55826. PMID 11470874.
- ^ Langland G, Kordich J, Creaney J, Goss KH, Lillard-Wetherell K, Bebenek K, Kunkel TA, Groden J (august 2001). "The Bloom's syndrome protein (BLM) interacts with MLH1 but is not required for DNA mismatch repair". J. Biol. Chem. 276 (32): 30031–5. doi:10.1074/jbc.M009664200. PMID 11325959.
- ^ Pedrazzi G, Perrera C, Blaser H, Kuster P, Marra G, Davies SL, Ryu GH, Freire R, Hickson ID, Jiricny J, Stagljar I (novembar 2001). "Direct association of Bloom's syndrome gene product with the human mismatch repair protein MLH1". Nucleic Acids Res. 29 (21): 4378–86. doi:10.1093/nar/29.21.4378. PMC 60193. PMID 11691925.
- ^ Wang XW, Tseng A, Ellis NA, Spillare EA, Linke SP, Robles AI, Seker H, Yang Q, Hu P, Beresten S, Bemmels NA, Garfield S, Harris CC (august 2001). "Functional interaction of p53 and BLM DNA helicase in apoptosis". J. Biol. Chem. 276 (35): 32948–55. doi:10.1074/jbc.M103298200. PMID 11399766.
- ^ Garkavtsev IV, Kley N, Grigorian IA, Gudkov AV (decembar 2001). "The Bloom syndrome protein interacts and cooperates with p53 in regulation of transcription and cell growth control". Oncogene. 20 (57): 8276–80. doi:10.1038/sj.onc.1205120. PMID 11781842.
- ^ Yang Q, Zhang R, Wang XW, Spillare EA, Linke SP, Subramanian D, Griffith JD, Li JL, Hickson ID, Shen JC, Loeb LA, Mazur SJ, Appella E, Brosh RM, Karmakar P, Bohr VA, Harris CC (august 2002). "The processing of Holliday junctions by BLM and WRN helicases is regulated by p53". J. Biol. Chem. 277 (35): 31980–7. doi:10.1074/jbc.M204111200. PMID 12080066.
- ^ a b Braybrooke JP, Li JL, Wu L, Caple F, Benson FE, Hickson ID (novembar 2003). "Functional interaction between the Bloom's syndrome helicase and the RAD51 paralog, RAD51L3 (RAD51D)". J. Biol. Chem. 278 (48): 48357–66. doi:10.1074/jbc.M308838200. hdl:10026.1/10297. PMID 12975363.
- ^ Wu L, Davies SL, Levitt NC, Hickson ID (juni 2001). "Potential role for the BLM helicase in recombinational repair via a conserved interaction with RAD51". J. Biol. Chem. 276 (22): 19375–81. doi:10.1074/jbc.M009471200. PMID 11278509.
- ^ a b Brosh RM, Li JL, Kenny MK, Karow JK, Cooper MP, Kureekattil RP, Hickson ID, Bohr VA (august 2000). "Replication protein A physically interacts with the Bloom's syndrome protein and stimulates its helicase activity". J. Biol. Chem. 275 (31): 23500–8. doi:10.1074/jbc.M001557200. PMID 10825162.
- ^ Opresko PL, von Kobbe C, Laine JP, Harrigan J, Hickson ID, Bohr VA (oktobar 2002). "Telomere-binding protein TRF2 binds to and stimulates the Werner and Bloom syndrome helicases". J. Biol. Chem. 277 (43): 41110–9. doi:10.1074/jbc.M205396200. PMID 12181313.
- ^ Moens PB, Kolas NK, Tarsounas M, Marcon E, Cohen PE, Spyropoulos B (april 2002). "The time course and chromosomal localization of recombination-related proteins at meiosis in the mouse are compatible with models that can resolve the early DNA-DNA interactions without reciprocal recombination". J. Cell Sci. 115 (Pt 8): 1611–22. doi:10.1242/jcs.115.8.1611. PMID 11950880.
- ^ Wu L, Davies SL, North PS, Goulaouic H, Riou JF, Turley H, Gatter KC, Hickson ID (mart 2000). "The Bloom's syndrome gene product interacts with topoisomerase III". J. Biol. Chem. 275 (13): 9636–44. doi:10.1074/jbc.275.13.9636. PMID 10734115.
- ^ Hu P, Beresten SF, van Brabant AJ, Ye TZ, Pandolfi PP, Johnson FB, Guarente L, Ellis NA (juni 2001). "Evidence for BLM and Topoisomerase IIIalpha interaction in genomic stability". Hum. Mol. Genet. 10 (12): 1287–98. doi:10.1093/hmg/10.12.1287. PMID 11406610.
- ^ von Kobbe C, Karmakar P, Dawut L, Opresko P, Zeng X, Brosh RM, Hickson ID, Bohr VA (juni 2002). "Colocalization, physical, and functional interaction between Werner and Bloom syndrome proteins". J. Biol. Chem. 277 (24): 22035–44. doi:10.1074/jbc.M200914200. PMID 11919194.
Dopunska literatura
uredi- Woo LL, Onel K, Ellis NA (2007). "The broken genome: genetic and pharmacologic approaches to breaking DNA". Ann. Med. 39 (3): 208–18. doi:10.1080/08035250601167136. PMID 17457718. S2CID 30395226.
- McDaniel LD, Schultz RA (1992). "Elevated sister chromatid exchange phenotype of Bloom syndrome cells is complemented by human chromosome 15". Proc. Natl. Acad. Sci. U.S.A. 89 (17): 7968–72. Bibcode:1992PNAS...89.7968M. doi:10.1073/pnas.89.17.7968. PMC 49836. PMID 1518822.
- Ellis NA, Groden J, Ye TZ, Straughen J, Lennon DJ, Ciocci S, Proytcheva M, German J (1995). "The Bloom's syndrome gene product is homologous to RecQ helicases". Cell. 83 (4): 655–66. doi:10.1016/0092-8674(95)90105-1. PMID 7585968. S2CID 13439128.
- German J, Roe AM, Leppert MF, Ellis NA (1994). "Bloom syndrome: an analysis of consanguineous families assigns the locus mutated to chromosome band 15q26.1". Proc. Natl. Acad. Sci. U.S.A. 91 (14): 6669–73. Bibcode:1994PNAS...91.6669G. doi:10.1073/pnas.91.14.6669. PMC 44264. PMID 8022833.
- Foucault F, Vaury C, Barakat A, Thibout D, Planchon P, Jaulin C, Praz F, Amor-Guéret M (1998). "Characterization of a new BLM mutation associated with a topoisomerase II alpha defect in a patient with Bloom's syndrome". Hum. Mol. Genet. 6 (9): 1427–34. doi:10.1093/hmg/6.9.1427. PMID 9285778.
- Kaneko H, Orii KO, Matsui E, Shimozawa N, Fukao T, Matsumoto T, Shimamoto A, Furuichi Y, Hayakawa S, Kasahara K, Kondo N (1997). "BLM (the causative gene of Bloom syndrome) protein translocation into the nucleus by a nuclear localization signal". Biochem. Biophys. Res. Commun. 240 (2): 348–53. doi:10.1006/bbrc.1997.7648. PMID 9388480.
- Wu L, Davies SL, North PS, Goulaouic H, Riou JF, Turley H, Gatter KC, Hickson ID (2000). "The Bloom's syndrome gene product interacts with topoisomerase III". J. Biol. Chem. 275 (13): 9636–44. doi:10.1074/jbc.275.13.9636. PMID 10734115.
- Yankiwski V, Marciniak RA, Guarente L, Neff NF (2000). "Nuclear structure in normal and Bloom syndrome cells". Proc. Natl. Acad. Sci. U.S.A. 97 (10): 5214–9. Bibcode:2000PNAS...97.5214Y. doi:10.1073/pnas.090525897. PMC 25808. PMID 10779560.
- Wang Y, Cortez D, Yazdi P, Neff N, Elledge SJ, Qin J (2000). "BASC, a super complex of BRCA1-associated proteins involved in the recognition and repair of aberrant DNA structures". Genes Dev. 14 (8): 927–39. doi:10.1101/gad.14.8.927. PMC 316544. PMID 10783165.
- Karow JK, Constantinou A, Li JL, West SC, Hickson ID (2000). "The Bloom's syndrome gene product promotes branch migration of Holliday junctions". Proc. Natl. Acad. Sci. U.S.A. 97 (12): 6504–8. Bibcode:2000PNAS...97.6504K. doi:10.1073/pnas.100448097. PMC 18638. PMID 10823897.
- Brosh RM, Li JL, Kenny MK, Karow JK, Cooper MP, Kureekattil RP, Hickson ID, Bohr VA (2000). "Replication protein A physically interacts with the Bloom's syndrome protein and stimulates its helicase activity". J. Biol. Chem. 275 (31): 23500–8. doi:10.1074/jbc.M001557200. PMID 10825162.
- Dutertre S, Ababou M, Onclercq R, Delic J, Chatton B, Jaulin C, Amor-Guéret M (2000). "Cell cycle regulation of the endogenous wild type Bloom's syndrome DNA helicase". Oncogene. 19 (23): 2731–8. doi:10.1038/sj.onc.1203595. PMID 10851073.
- Barakat A, Ababou M, Onclercq R, Dutertre S, Chadli E, Hda N, Benslimane A, Amor-Guéret M (2000). "Identification of a novel BLM missense mutation (2706T>C) in a Moroccan patient with Bloom's syndrome". Hum. Mutat. 15 (6): 584–5. doi:10.1002/1098-1004(200006)15:6<584::AID-HUMU28>3.0.CO;2-I. PMID 10862105. S2CID 41245824.
- Brosh RM, Karow JK, White EJ, Shaw ND, Hickson ID, Bohr VA (2000). "Potent inhibition of Werner and Bloom helicases by DNA minor groove binding drugs". Nucleic Acids Res. 28 (12): 2420–30. doi:10.1093/nar/28.12.2420. PMC 102731. PMID 10871376.
- Wu L, Davies SL, Levitt NC, Hickson ID (2001). "Potential role for the BLM helicase in recombinational repair via a conserved interaction with RAD51". J. Biol. Chem. 276 (22): 19375–81. doi:10.1074/jbc.M009471200. PMID 11278509.
- Langland G, Kordich J, Creaney J, Goss KH, Lillard-Wetherell K, Bebenek K, Kunkel TA, Groden J (2001). "The Bloom's syndrome protein (BLM) interacts with MLH1 but is not required for DNA mismatch repair". J. Biol. Chem. 276 (32): 30031–5. doi:10.1074/jbc.M009664200. PMID 11325959.
- Wang XW, Tseng A, Ellis NA, Spillare EA, Linke SP, Robles AI, Seker H, Yang Q, Hu P, Beresten S, Bemmels NA, Garfield S, Harris CC (2001). "Functional interaction of p53 and BLM DNA helicase in apoptosis". J. Biol. Chem. 276 (35): 32948–55. doi:10.1074/jbc.M103298200. PMID 11399766.
- Hu P, Beresten SF, van Brabant AJ, Ye TZ, Pandolfi PP, Johnson FB, Guarente L, Ellis NA (2001). "Evidence for BLM and Topoisomerase IIIalpha interaction in genomic stability". Hum. Mol. Genet. 10 (12): 1287–98. doi:10.1093/hmg/10.12.1287. PMID 11406610.
- Freire R, d'Adda Di Fagagna F, Wu L, Pedrazzi G, Stagljar I, Hickson ID, Jackson SP (2001). "Cleavage of the Bloom's syndrome gene product during apoptosis by caspase-3 results in an impaired interaction with topoisomerase IIIα". Nucleic Acids Res. 29 (15): 3172–80. doi:10.1093/nar/29.15.3172. PMC 55826. PMID 11470874.
Vanjski linkovi
uredi- GeneReviews/NCBI/NIH/UW entry on Bloom Syndrome
- Lokacija ljudskog genoma BLM i stranica sa detaljima o genu BLM u UCSC Genome Browseru.
- P54132