HHsearch alignment for GI: 254780487 and conserved domain: cd02033

>cd02033 BchX Chlorophyllide reductase converts chlorophylls into bacteriochlorophylls by reducing the chlorin B-ring. This family contains the X subunit of this three-subunit enzyme. Sequence and structure similarity between bchX, protochlorophyllide reductase L subunit (bchL and chlL) and nitrogenase Fe protein (nifH gene) suggest their functional similarity. Members of the BchX family serve as the unique electron donors to their respective catalytic subunits (bchN-bchB, bchY-bchZ and nitrogenase component 1). Mechanistically, they hydrolyze ATP and transfer electrons through a Fe4-S4 cluster.
Probab=98.57  E-value=9.7e-07  Score=61.64  Aligned_cols=181  Identities=14%  Similarity=0.179  Sum_probs=107.1

Q ss_pred             CEEEEECCCCCCCHHHHHHHHHHHHHCCCCCCEECCCCCCCHHHHHHHHHCCCCCCC-----------CCC--CCCCCC-
Q ss_conf             329998358987479999999999840486120138873806899999855787311-----------443--001451-
Q gi|254780487|r    3 LRLVIVGTDTSVGKTIFASALVHALNAYYWKPIQSGMYEETDSKTIHRIGRIPKSHI-----------IPE--KWKLRT-   68 (217)
Q Consensus         3 ~~i~I~GT~t~vGKT~vs~~L~~~l~~~~~KPv~~G~~~~~D~~~~~~~~~~~~~~~-----------~~~--~~~~~~-   68 (217)
T Consensus        32 ~~IAiYGKG-GIGKSTts~NlsAAlA~~GkkVm~IGCDPKaDSTrlLlgG~~~~TVLd~~~~~~~~~e~v~~~dv~~~g~  110 (329)
T cd02033          32 QIIAIYGKG-GIGKSFTLANLSYMMAQQGKRVLLIGCDPKSDTTSLLFGGKACPTIIETSAKKKLAGEEVQIGDVCFKRD  110 (329)
T ss_pred             EEEEEECCC-CCCHHHHHHHHHHHHHHCCCEEEEECCCCCCCHHHHCCCCCCCCHHHHHHHHCCCCCCCCCHHHEEECCC
T ss_conf             499997688-4356168899999999779969997888846033410589888409999987288644342501786259


Q ss_pred             ------CHHHHHHHHHHHCCCHHHHHHH------HHHCCEEEEECCCCC-----CCCCCCCCCHHHHHHHHCCCEEEEEC
Q ss_conf             ------0347889998502350788642------232887999227655-----56676753089999974794489705
Q gi|254780487|r   69 ------PASPHLAAEIDGVIIDPATINP------PDINDSIIIEGIGGL-----LVPLTTEYLFIDLIERWQFPIILCAR  131 (217)
Q Consensus        69 ------~~~~~~~~~~~~~~i~~~~~~~------~~~~D~viIEGagg~-----~~~~~~~~~~~dla~~l~~~vILV~~  131 (217)
T Consensus       111 Gv~CvEsGGPEPGvGCAGRGIItai~lLe~lg~~~~d~D~V~yDVLGDVVCGGFAmPiR~--g~A~-------evyIVtS  181 (329)
T cd02033         111 GVFAMELGGPEVGRGCGGRGIIHGFELLEKLGFHDWDFDYVLLDFLGDVVCGGFGLPIAR--DMAQ-------KVIVVGS  181 (329)
T ss_pred             CEEEEECCCCCCCCCCCCCCHHHHHHHHHHCCCCCCCCCEEEEECCCCEEECCCCCCCCC--CCCC-------EEEEEEC
T ss_conf             988986679999876788730136678776377525899999922453566463353356--8762-------8999967


Q ss_pred             CCCCHH---HHHHHHHHHHHHC-C-CEEEEEEECCCCCCCHHHHHHHHCCCCEEEEECCCCCCCHHH
Q ss_conf             776504---5799999999847-9-907999976977800599999861998999947888888879
Q gi|254780487|r  132 TSLGTI---NHSLLSLETLRNR-N-INIIGIAFIGDSMPKVEETIVKIGRIPHLGRLPKIDPIDPDV  193 (217)
Q Consensus       132 ~~~g~i---~~~~l~~~~~~~~-g-~~i~GiIlN~~~~~~~~~~le~~~~ipvLG~iP~~~~~~~~~  193 (217)
T Consensus       182 gE~MalyAANNI~~~i~~~a~~gg~vrl~GlI~N~~~~~~e~e~fa~~~g~~~l~~vP~d~~iRr~~  248 (329)
T cd02033         182 NDLQSLYVANNVCNAVEYFRKLGGNVGVAGMVINKDDGTGEAQAFAAHAGIPILAAIPADEELRRKS  248 (329)
T ss_pred             CCHHHHHHHHHHHHHHHHHHHCCCCCCEEEEEEECCCCCHHHHHHHHHCCCCEEEECCCCHHHHHHH
T ss_conf             8088999887899999999863897101159860688724999999971995799637877887654