HHsearch alignment for GI: 254780861 and conserved domain: TIGR03290

>TIGR03290 CoB_CoM_SS_C CoB--CoM heterodisulfide reductase, subunit C. The last step in methanogenesis leaves two coenzymes of methanogenesis, CoM and CoB, linked by a disulfide bond. Members of this protein family are the C subunit of the enzyme that reduces the heterodisulfide to CoB-SH and CoM-SH. Similar enzyme complex subunits are found in various other species, but likely act on a different substrate.
Probab=96.78  E-value=0.00029  Score=45.97  Aligned_cols=53  Identities=34%  Similarity=0.663  Sum_probs=32.6

Q ss_pred             CCCEECCCCHHHHHHCCCCCCCCCC-----CCCCC--EEEEEEEEEHHHCCCCCCCHHHCCCC
Q ss_conf             4221345223253308832101224-----54473--35778885055558688723337831
Q gi|254780861|r   61 ERCIACKLCEAICPAQAITIESGPR-----CHDGT--RRTVRYDIDMIKCIYCGLCQEACPVD  116 (163)
Q Consensus        61 ekCi~C~~C~~~CP~~aI~i~~~~~-----~~~~~--~~~~~~~id~~~Ci~Cg~Cv~vCP~~  116 (163)
T Consensus         2 ~~C~qCG~Cta~CP~~~~~~-~~pR~iir~~~~G~~e~vl~--s~~lW~C~tC~~C~~~CP~g   61 (144)
T TIGR03290         2 KACYQCGTCTGSCPSGRRTS-YRTRLIIRKALLGLKDEVIS--DDDLWMCTTCYTCQERCPRD   61 (144)
T ss_pred             CCCCCCCCCCCCCCCCCCCC-CCHHHHHHHHHCCCHHHHCC--CCCCCCCCCCCCHHHHCCCC
T ss_conf             70557999878499998889-89899999998688023306--88630384737540134899