HHsearch alignment for GI: 254780268 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=90.82  E-value=1.2  Score=25.05  Aligned_cols=16  Identities=56%  Similarity=0.968  Sum_probs=7.9

Q ss_pred             HHHHHHHHCCCCCCCC
Q ss_conf             8877664224433243
Q gi|254780268|r  118 TAKKTAQQLGIPVVPG  133 (443)
Q Consensus       118 ~~k~~a~~~GVP~~p~  133 (443)
T Consensus       121 V~~~~~~~~gipVIpv  136 (421)
T cd01976         121 VARKASKELGIPVVPV  136 (421)
T ss_pred             HHHHHHHHCCCCEEEE
T ss_conf             9999877529988998