HHsearch alignment for GI: 254780426 and conserved domain: cd04638

>cd04638 CBS_pair_25 The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic gener
Probab=97.92  E-value=1.1e-05  Score=57.05  Aligned_cols=46  Identities=20%  Similarity=0.398  Sum_probs=29.6

Q ss_pred             CCEEECCCCCHHHHHHHHHCCCCCCEEEEECCCCCEEEEEHHHHHH
Q ss_conf             6579717885123234320135651165407766204667588999
Q gi|254780426|r  170 NILFVPSSMLVSDLLTNIQESRIRMALVIDEHGGTDGLVSYEDIVS  215 (320)
Q Consensus       170 ~~~~Vpe~~~l~~lL~~m~~~~~~~aiVvDE~G~~~GiVTleDIle  215 (320)
T Consensus         2 dvvtv~~~~tv~ea~~lm~~~~i~~lpVvd~~~~lvGivT~~Dl~~   47 (106)
T cd04638           2 NVVYVTLPGTRDDVLELLKEYKVSGVPVVKKSGELVGIITRKDLLR   47 (106)
T ss_pred             CCEEECCCCCHHHHHHHHHHHCCCEEEEECCCCEEEEEEEHHHHHH
T ss_conf             9899999496999999999769998999938999999989789644