>TIGR02813 omega_3_PfaA polyketide-type polyunsaturated fatty acid synthase PfaA; InterPro: IPR004432 Members of this entry represent PfaA, which is involved in omega-3 polyunsaturated fatty acid biosynthesis, for example PfaA from the eicosapentaenoic acid biosynthesis operon in Photobacterium profundum strain SS9. PfaA is found together with PfaB, PfaC, and PfaD, and the functions of the individual polypeptides have not yet been described. More distant homologues of PfaA, also included in this entry, appear to be involved in polyketide-like biosynthetic mechanisms of polyunsaturated fatty acid biosynthesis; an alternative to the more familiar iterated mechanism of chain extension and desaturation, and like PfaA the more distant homologues are likewise found near genes for homologues of PfaB, PfaC, and/or PfaD..

Probab=96.05 E-value=0.007 Score=38.71 Aligned_cols=171 Identities=20% Similarity=0.325 Sum_probs=96.2 Q ss_pred HHHHHHHHHHHHCCCCCCCCCEEEEE--EE---EECCCCCCC-----CCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHH Q ss_conf 99999999864301322234425884--31---002368874-----322112100238633342101231012567657 Q gi|254780489|r 57 IAIQAGDIALRNANIKKDSISLTLLA--TS---TPDHLLPPS-----SPLITHRLGLMQSGAIDLTGACAGFLYALVMAD 126 (325) Q Consensus 57 la~~Aa~~aL~~a~~~~~dId~ii~~--s~---t~d~~~P~~-----a~~v~~~Lg~~~~~~~di~~~C~g~l~aL~~A~ 126 (325) T Consensus 141 LQyPVL~KV~K~SG~~d~D~~~lI~KF~~~Yi~WEENSFPG~LGNVIsGRIANRFDlGG~NCV-VDAACAGSLAA~~~Al 219 (2773) T TIGR02813 141 LQYPVLKKVFKASGVEDEDSEMLIKKFQDQYIHWEENSFPGSLGNVISGRIANRFDLGGMNCV-VDAACAGSLAALRLAL 219 (2773) T ss_pred CCCHHHHHHHHHCCCCHHHHHHHHHHHHHCCCCCCCCCCCCCCCCHHHCCHHHHHCCCCCCHH-HHHHHHHHHHHHHHHH T ss_conf 033368888741588764689999987621344414578976433010101100015884256-6664366799999999 Q ss_pred HHHHCCCCEEEE---EEECC-------CCCC--------CCCCCC-CCCCCCCCCEEEEEECCCCCCCCC--CC----EE Q ss_conf 887438850588---62012-------2444--------462224-434325442001122057654445--31----13 Q gi|254780489|r 127 SYINSHQKPVLI---IAANL-------LSRR--------INLEDK-DTAIIFGDAAGAVVLAPSPLKDKS--GI----LG 181 (325) Q Consensus 127 ~~i~~g~~~vLV---v~~e~-------~S~~--------~d~~d~-~~~~lfGDgA~A~il~~~~~~~~~--~i----l~ 181 (325) T Consensus 220 s~L~E~RSe~MI~GGVC~DNSP~MYMSFSKTPAFTT~E~I~PFD~DSKGMMIGEGIGM~AlKRLeDAERDGD~iYaV~KG 299 (2773) T TIGR02813 220 SELLEGRSEMMITGGVCTDNSPFMYMSFSKTPAFTTNEDIQPFDIDSKGMMIGEGIGMVALKRLEDAERDGDRIYAVIKG 299 (2773) T ss_pred HHHCCCCCCEEEECCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCEECCCHHHHHHHHHHHHCCCCCEEEEEEEC T ss_conf 86302532145627532488873020236787656788534331456754431655556533211010588778998731 Q ss_pred EEEEECCCCCCEEEEECCCCCCCCCCCCCCCCCCCCCCHHHHHHHCCCHHHHHHHHHHHHCCCCCCCCEEEECCCC Q ss_conf 5532136776527830698667654455655232245145434320100367898899740120012246305654 Q gi|254780489|r 182 IELTSDGSKYDLIKIPTGGSTSPAGTNTHDFYMRITNGADIFYNAVKIMAQSAKQSLRKSDLQPQDINRFIPHQAN 257 (325) Q Consensus 182 ~~~~s~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~g~~v~~~~~~~~~~~i~~~l~~~gl~~~did~~i~Hq~~ 257 (325) T Consensus 300 vGaSSDGkFKS-IYAP------------------RP~G----------QAKAL~RAYdDAGF~P~~~GliEAHGTG 346 (2773) T TIGR02813 300 VGASSDGKFKS-IYAP------------------RPEG----------QAKALKRAYDDAGFAPHTVGLIEAHGTG 346 (2773) T ss_pred CCCCCCCCEEE-EECC------------------CCCH----------HHHHHHHHHHHCCCCCCCEEEEECCCCC T ss_conf 01376873223-2178------------------9844----------6899875464327997511006216777

HHsearch alignment for GI: 254780489 and conserved domain: TIGR02813