>TIGR01790 carotene-cycl lycopene cyclase family protein; InterPro: IPR010108 Carotenoids have important functions in photosynthesis, nutrition, and protection against oxidative damage, and are essential components of the photosynthetic membranes in all plants, algae, and cyanobacteria. The final steps in the biosynthesis of carotenoids usually involve the cyclization of lycopene by one of two pathways: the formation of a beta ring by beta-cyclase, or an epsilon ring by epsilon-cyclase. Epsilon-cyclase adds only one ring, forming the monocyclic delta-carotene, whereas beta-cyclase introduces a ring at both ends of lycopene to form the bicyclic beta-carotene . Both enzymes show high sequence similarities, and may have evolved from the same ancestor . This family includes lycopene beta-and epsilion-cyclases, which are involved in the biosynthesis of carotenoids in bacteria and plants, and the related capsanthin capsorubin synthase (Ccs) from plants, which converts antheraxanthin or violaxanthin into capsanthin or capsorubin by a mechanism similar to lycopene cyclization.; GO: 0016705 oxidoreductase activity acting on paired donors with incorporation or reduction of molecular oxygen, 0016117 carotenoid biosynthetic process.

Probab=99.62 E-value=4.1e-14 Score=115.31 Aligned_cols=304 Identities=16% Similarity=0.195 Sum_probs=168.2 Q ss_pred CEECCHHHHHHHHHHHH--HCCCEEEEEECCCC-CC-CCCCEEEECHHHHHHHHHCC---CHHHHHHCCCCCCCEEEEEC Q ss_conf 38775389999999999--77985999956876-55-57713667888999999889---94789862688430699978 Q gi|254780168|r 1 MIIGAGISGLTLAASLG--HRGIQSCVLEKKDQ-LS-DSGFGIQISPNASRILKRIG---ILDQLEDIWIEPEDFVFRSG 73 (380) Q Consensus 1 iIvGaG~aGl~~A~~L~--~~G~~v~i~Er~~~-~~-~~g~gi~l~p~~~~~L~~lG---i~~~~~~~~~~~~~~~~~~~ 73 (380) T Consensus 3 ~ViGgGpAG~aiA~~l~~a~~gL~V~~i~p~p~f~~~~~tyg~w~-----~dl~~~~hawl~~l~~---~~W~~~~~y~~ 74 (419) T TIGR01790 3 IVIGGGPAGLAIALELADARPGLRVQLIEPAPPFLPGNNTYGVWD-----DDLSDLGHAWLADLVE---HRWSDAYEYRF 74 (419) T ss_pred EEECCCHHHHHHHHHHHHHCCCCEEEEECCCCCCCCCCCCCCCCC-----CCHHHHHHHHHHHHHC---CCCCCEEEECC T ss_conf 887477578999999997505871898678887677687442122-----2232789999998841---63898068838 Q ss_pred CCCCCCCCCCCCCCCCCCCCCEEEEEECCHHHHHHHHHHHHCCCEEEEEEECC--CC----CCCCCCCCCCCEEEEEEEE Q ss_conf 85443334554323444478247862000134788997320687256421012--34----4321123453103568997 Q gi|254780168|r 74 STLKELSRFSCKNYSRNNWGGIYGVVKRHTLQKILLNHIQTQPLARLHLSTHI--TH----PDCTQISKINNQKPDLLVG 147 (380) Q Consensus 74 ~~~~~~~~~~~~~~~~~~~~~~~~~i~r~~l~~~L~~~~~~~~~~~~~~~~~v--~~----~~~~~~~~~~~~~adlvIg 147 (380) T Consensus 75 ~~------------~~~~L~~~Y~~~~~~~L~~~l~~~~~~~sG~~~~~~ka~~~~~~~~~~~~v~~~~g~~i~Ar~V~D 142 (419) T TIGR01790 75 PE------------EPIKLGRAYGSVDRAQLHEELLQKCPEGSGVLWLEAKAIKVEADAVSLSLVECAGGQRIQARLVID 142 (419) T ss_pred CC------------CCHHCCCCCEEECHHHHHHHHHHHHHCCCCEEEEHHHHHHHHHHHCCCCEEECCCCEEEEEEEEEE T ss_conf 73------------430105665000158999999986200376133013566665440551114428973784007883 Q ss_pred ECCCCC--CCHHHCCCCCCCCCCCEEEEEECCCCCCCCCCCCCCEEEEE----------CCCC-----EEEEEEECCCCE Q ss_conf 436766--31211285334431101578603654465545667608997----------6540-----578884048973 Q gi|254780168|r 148 ADGLNS--NIRHYIDTQPITFSGDVVLRCLIPQNNAPEFIDFQSVNIFF----------GPDS-----HLVTYPLREDNT 210 (380) Q Consensus 148 ADG~~S--~vR~~l~~~~~~~~~~~~~~~~i~~~~~~~~~~~~~~~~~~----------~~~~-----~~~~~p~~~~~~ 210 (380) T Consensus 143 a~G~~~G~l~~~~~~~~~~g--~Q~ayG~~~rl~~~P~~~~~~V~MD~r~~~~~~~~~l~~~~sripTFlYampL~~~~~ 220 (419) T TIGR01790 143 ARGFKPGKLVQYEKASLAVG--YQAAYGVEVRLSEPPHGPSSMVIMDYRVDQLKDAPELKGYRSRIPTFLYAMPLSSDRV 220 (419) T ss_pred CCCCCCCCEECCCCCCCCCE--EEEEEEEEEEEECCCCCCCCCEEECCCHHHHCCCCCCCCCCCCCCCEEEECCCCCCEE T ss_conf 25777651011256676421--2131327788724787999865831152523578532355666761566305899647 Q ss_pred EEEEEEECCCCCCCCCCCCCCCCCHHHHHHHHHH----CCCCCCEEEECCCCCCCCCCCCC-CCCCCCCCCC---EEECH Q ss_conf 7999984577421112345532223898986321----28022201100233210123346-5421014687---11211 Q gi|254780168|r 211 INMVFVSSKHTLKDISFLKRSEIHKEWFVKHLTN----WHQEIIQLILQINDTHLYPLFEC-ECKHWHNKKN---AVLIG 282 (380) Q Consensus 211 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~----~~~~~~~~i~~~~~~~~~~l~~~-~~~~~~~~~r---v~LiG 282 (380) T Consensus 221 f----------~EeT~l~~~p~l~~~~L~~rl~~rl~~~G~~~~~i~~--eE~~~lP~~~~~p~sa~~~~q~~PGv~~~G 288 (419) T TIGR01790 221 F----------IEETSLAARPALPRDRLKQRLLARLAAQGWQVKEIEE--EEQGLLPVNLPLPSSAYVLEQRIPGVVAFG 288 (419) T ss_pred E----------EEEEEECCCCCCCHHHHHHHHHHHHHHCCCCCCCHHH--CCHHHCCCCCCCCCCCCCCCCCCCCHHHCC T ss_conf 8----------8851002689989899999999999846882340032--001111435578852220689987033100 Q ss_pred HHCCCCCCCHHHHHCCCHHHHHHHHHHHCC----C-------------CHHHHHHHHHHHHHHHHHHHHHHHH Q ss_conf 111244830334201303679999998524----8-------------9899999999986799999999999 Q gi|254780168|r 283 DAAHTLLPFAAQGANMAIEDAYALSYLLGK----K-------------TIPAAISAYQKVRAVRVKRIRYRTK 338 (380) Q Consensus 283 DAAH~~~P~~GqG~n~al~Da~~La~~L~~----~-------------~~~~~l~~Y~~~R~~~~~~i~~~s~ 338 (380) T Consensus 289 ~aAg~vHP~TGY~v~~al~~Ap~~A~~~A~~L~~~~S~~mltsss~~~~~~~~w~~lw~~~~~r~r~~~~lg~ 361 (419) T TIGR01790 289 AAAGMVHPATGYSVARALSEAPKLAAAIAQALALSSSKSMLTSSSIAELATAAWDGLWPTERRRQRYFRLLGR 361 (419) T ss_pred CCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHCCCCCCHHHHHCCHHHHHHHHHHHHCCHHHHHCCEEEHHHH T ss_conf 1334557751114899999878889999974133332022110244899999998513144666441003568

HHsearch alignment for GI: 254780168 and conserved domain: TIGR01790