>TIGR02239 recomb_RAD51 DNA repair protein RAD51; InterPro: IPR011941 Homologous recombination is an evolutionarily conserved mechanism for the repair of double-strand breaks in DNA and the generation of genetic diversity. The primary function of homologous recombination in mitotic cells is to repair double-strand breaks or single-strand gaps that form as a result of replication fork collapse, from processing of spontaneous damage, and from exposure to DNA-damaging agents. During meiosis, homologous recombination is essential to establish a physical connection between homologous chromosomes to ensure their correct disjunction at the first meiotic division. In addition, the high frequency of meiotic recombination contributes to diversity by creating new linkage arrangements between genes, or parts of genes . The central step of homologous recombination is synapsis, the process of bringing together the two homologous strands. Rad51, a eukaryotic homologue of the prokaryotic recombinase RecA, mediates this process in eukaryotes . Firstly a single-stranded DNA tail is coated by ATP-bound Rad51 to yield a nucleoprotein filament. This filament then searches for a homologous sequence within double-stranded DNA, and catalyses the exchange of strands between the single-stranded and double-stranded DNA substrates. The original broken end of the resulting branched DNA is now aligned with an appropriate matching sequence in an intact duplex, and is further processed by other enzymes . Rad51 contains an N-terminal alpha-helical DNA binding domain not found in RecA, and a RecA-like C-terminal ATPase domain , . The active form of this protein is a long helical filament where the catalytically active unit is a homodimer . ; GO: 0003684 damaged DNA binding, 0005524 ATP binding, 0008094 DNA-dependent ATPase activity, 0006281 DNA repair.

Probab=99.94 E-value=4.9e-27 Score=190.52 Aligned_cols=226 Identities=23% Similarity=0.333 Sum_probs=174.9 Q ss_pred CCCCCCCCCCCCCCCCHHHHHHHCCCCCCCCCEEEEEECCCCHHHHHHHHHHHHHHH----C--CCEEEEEECCCCCCHH Q ss_conf 665533465501477278999723897268807999706872378999999875200----8--9879999738855668 Q gi|255764460|r 37 SQGSIFEGIEVVSSGSLGLDIALGIGGFPKGRIVEIYGPESSGKTTLALHTIAQSQK----T--GGTCAFVDAEHALDSI 110 (363) Q Consensus 37 ~~~~~~~~~~~i~TG~~~lD~~Lg~GG~p~Gri~ei~G~~~sGKTtlal~~~a~~qk----~--g~~~~~iD~E~~~~~~ 110 (363) T Consensus 67 ~~~~~r~~~~~~~~Gs~~ld~~l~-GG~e~Gsite~fGefr~Gk~q~Cht~~vtCql~~~~~G~~G~~lyid~e~tfr~~ 145 (317) T TIGR02239 67 ELHKKRKEVIQLTTGSKELDKLLE-GGIETGSITEIFGEFRTGKTQLCHTLAVTCQLPVDQGGGEGKALYIDTEGTFRPE 145 (317) T ss_pred HHHHHHHHHEECCCCHHHHHHHHC-CCCCCCCHHHHHCCCCCCCHHHHHHEEEEEEECCCCCCCCCCEEEEECCCCCCHH T ss_conf 999877654121035068999860-8755450322110001662022100113453012367876316887256531068 Q ss_pred H----HHHHCCCH----HHEEEEECCCHHH---HHHHHHHHHHCCCCCEEEEECCCCCCCHHHHHHHHHHHCCCHHHHHH Q ss_conf 8----99819883----3448972584899---99999999744897689981433322026554345553022478887 Q gi|255764460|r 111 Y----ARKLGVDL----KNLLISQPDTGEQ---ALEITDMLVRSGAVDIIVIDSVAALTPRAEIEGDMGESLPGMQARLM 179 (363) Q Consensus 111 ~----a~~~Gvd~----~~l~~~~~~~~E~---~~~i~~~li~~~~~~liViDSi~al~p~~Eie~~~~d~~~g~~ar~m 179 (363) T Consensus 146 rl~~~a~r~~l~~~~~l~nv~~ara~n~d~q~~ll~~a~~~~~~~~~~l~~vds~~aly-r~d~~Grg---el~~rq~~l 221 (317) T TIGR02239 146 RLLAIAERYGLNGEDVLDNVAYARAYNTDHQLKLLLQAAALMAESRYALLIVDSATALY-RTDYSGRG---ELSARQMHL 221 (317) T ss_pred HHHHHHHHHCCCHHHHHHHHHHHHHHCHHHHHHHHHHHHHHHHHCCCEEEEHHHHHHHH-HCCCCCCH---HHHHHHHHH T ss_conf 99999986268877888887887650416899999999998862772145113356776-30355504---588999999 Q ss_pred HHHHHHHHHHHCCCCCEEEEEECCCCCCCC----CC-CCCCCCCCCCCCCCCCCEEEEEECCCCCCCCCEEEEEEEEEEE Q ss_conf 677677776420178189998634114566----54-6651256553111111248975045534457724767999877 Q gi|255764460|r 180 SQALRKLTSSISRSKCILVFINQMRMKIGV----MF-GSPETTTGGNALKFYSSVRLDIRRVGSIKDKDSITGNQTRVKV 254 (363) Q Consensus 180 s~~lrkl~~~~~k~~~~~i~iNQ~r~~ig~----m~-g~p~~~~GG~al~~~aS~rl~i~k~~~ik~~~~~iG~~v~~kv 254 (363) T Consensus 222 ~~flr~l~~la~~f~vav~~tnqv~~~~dG~~~~~~~~~~~kPiGG~i~ah~s~trl~l~kG-~--------G~~r~~k~ 292 (317) T TIGR02239 222 AKFLRSLQRLADEFGVAVVITNQVVAQVDGAASAMFAADAKKPIGGNIMAHASTTRLSLRKG-R--------GEQRICKI 292 (317) T ss_pred HHHHHHHHHHHHHCCEEEEEECHHHHCCCCCHHHHHCCCCCCCCCCCEEEECCCEEEEEECC-C--------CCCEEEEE T ss_conf 99999999888634546897420010035402344314456886751232010002344417-7--------73102323 Q ss_pred EECCCCCCCCEEEEEEECCCCCCC Q ss_conf 405778985158999861874231 Q gi|255764460|r 255 VKNKMASPFKQVEFDIMYGEGISF 278 (363) Q Consensus 255 ~Knk~~~P~~~a~~~i~fg~GI~~ 278 (363) T Consensus 293 ~~sP~l~-~~~~~f~i-~~~G~~d 314 (317) T TIGR02239 293 YDSPCLP-ESEAVFAI-AEDGIGD 314 (317) T ss_pred ECCCCCC-CHHHHHHH-HHHCCCC T ss_conf 1067752-01344433-4421122

HHsearch alignment for GI: 255764460 and conserved domain: TIGR02239