HHsearch alignment for GI: 254780328 and conserved domain: cd01976

>cd01976 Nitrogenase_MoFe_alpha Nitrogenase_MoFe_alpha_II: Nitrogenase MoFe protein, beta subunit. A group of proteins similar to the alpha subunit of the MoFe protein of the molybdenum (Mo-) nitrogenase. The nitrogenase enzyme catalyzes the ATP-dependent reduction of dinitrogen to ammonia. The Mo-nitrogenase is the most widespread and best characterized of these systems. Mo-nitrogenase consists of the MoFe protein (component 1) and the Fe protein (component 2). MoFe is an alpha2beta2 tetramer. Each alphabeta pair of MoFe contains one P-cluster (at the alphabeta interface) and, one molecule of iron molybdenum cofactor (FeMoco) contained within the alpha subunit. The Fe protein contains a single [4Fe-4S] cluster. Electrons are transferred from the [4Fe-4S] cluster of the Fe protein to the P-cluster of the MoFe and in turn to FeMoCo, the site of substrate reduction.
Probab=90.74  E-value=1.2  Score=23.23  Aligned_cols=23  Identities=13%  Similarity=0.092  Sum_probs=12.7

Q ss_pred             CCCCCCCCCCCCCCCCCCCCCCCCCC
Q ss_conf             22222222222222222222222222
Q gi|254780328|r  152 RELLQHNKVNGLRSVVLRYFNAAGAT  177 (333)
Q Consensus       152 ~~~~~~~~~~~~~~~~~R~~~vyGp~  177 (333)
T Consensus       233 ~~A~~le~~yGiP~~~~~f---~Gi~  255 (421)
T cd01976         233 YIARMMEEKYGIPWMEYNF---FGPT  255 (421)
T ss_pred             HHHHHHHHHHCCCEEEECC---CCHH
T ss_conf             9999999986989695156---5879