>TIGR02733 desat_CrtD C-3',4' desaturase CrtD; InterPro: IPR014104 Members of this family are encoded by slr1293, a carotenoid biosynthesis protein which was shown to be the C-3',4' desaturase (CrtD) of myxoxanthophyll biosynthesis in Synechocystis sp. (strain PCC 6803), and close homologues (presumed to be functionally equivalent) from other cyanobacteria, where myxoxanthophyll biosynthesis is either known or expected. This enzyme can act on neurosporene and so presumably catalyses the first step that is committed to myxoxanthophyll..

Probab=98.59 E-value=4.4e-08 Score=73.93 Aligned_cols=54 Identities=39% Similarity=0.711 Sum_probs=41.3 Q ss_pred CEECCHHHHHHHHHHHHHCCCEEEEEECCCC-------CCC------CCCE-E-EECHHHH--HHHHHCCC Q ss_conf 3877538999999999977985999956876-------555------7713-6-6788899--99998899 Q gi|254780168|r 1 MIIGAGISGLTLAASLGHRGIQSCVLEKKDQ-------LSD------SGFG-I-QISPNAS--RILKRIGI 54 (380) Q Consensus 1 iIvGaG~aGl~~A~~L~~~G~~v~i~Er~~~-------~~~------~g~g-i-~l~p~~~--~~L~~lGi 54 (380) T Consensus 5 vVIGaGIaGLTaAALLA~~G~~Vtl~E~h~q~GGCAgTFrRr~ftFDVGATQVAGLEpGGiH~riF~~L~~ 75 (499) T TIGR02733 5 VVIGAGIAGLTAAALLAKRGYRVTLLEQHAQLGGCAGTFRRRGFTFDVGATQVAGLEPGGIHARIFRELGL 75 (499) T ss_pred EEEECCHHHHHHHHHHHHCCCCEEEEEEECCCCCCCCCCCCCCEEEECCCEEECCCCCCCHHHHHHHHCCC T ss_conf 99818726789999998539967999740127875443436874540455221367898579999985488

HHsearch alignment for GI: 254780168 and conserved domain: TIGR02733