HHsearch alignment for GI: 255764505 and conserved domain: cd04639

>cd04639 CBS_pair_26 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=98.33  E-value=1.9e-06  Score=67.28  Aligned_cols=55  Identities=22%  Similarity=0.305  Sum_probs=50.7

Q ss_pred             HHHHHHHCCCCCCEEEEEHHHHHHHHHHHHCCCCCEEEECCCCCEEEEEEECCCHHH
Q ss_conf             333332104754305510023888898741046620000004323232412340356
Q gi|255764505|r  218 VCASDVMHSGDSIPLVKIGCPLIDAITILSEKRFGCVAVVDEGQKLKGIITEGDIFR  274 (341)
Q Consensus       218 l~V~DiM~~~~~ip~V~~~~si~eal~~m~~~~~g~v~Vvd~~~~liGIITdgDlrR  274 (341)
T Consensus        56 ~~V~~vM~~--~v~tv~~~~~l~~~~~~m~~~~~~~lpVVd~~g~lvGivT~~Di~E  110 (111)
T cd04639          56 APVRGVMRR--DFPTVSPSATLDAVLRLMQQGGAPAVPVVDGSGRLVGLVTLENVGE  110 (111)
T ss_pred             CCHHHHCCC--CCEEECCCCCHHHHHHHHHHCCCCEEEEECCCCEEEEEEEHHHHHC
T ss_conf             705763546--9879989994999999999589988989957992999999788544