>gnl|CDD|73132 cd04634, CBS_pair_21, 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 generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).. Length = 143

 Score = 48.3 bits (115), Expect = 3e-06
 Identities = 35/139 (25%), Positives = 52/139 (37%), Gaps = 36/139 (25%)

Query: 233 VKIGCPLIDAITILSEKRFGCVAVVDEGQKLKGIITEGDIF------------------- 273
                 + DA  +L E +     V+D G KL GI++E DI                    
Sbjct: 6   CNADDTISDAARLLRENKISGAPVLDGG-KLVGIVSESDILKLLVTHDPSGNLWLPSPLE 64

Query: 274 ------RNFHK---------DLNTLSVEDVMIKNPKVILEDTLLTVAMQLLRQHNISVLM 318
                 R F           D   + V D+M K    I  D  +  A +L+ +H I  L 
Sbjct: 65  LIELPLREFINWEETKRALTDAGKMKVRDIMTKKVITISPDASIEDAAELMVRHKIKRLP 124

Query: 319 VVDDCQKAIGIVHFLDLLR 337
           VV+D  + +GIV   D++ 
Sbjct: 125 VVED-GRLVGIVTRGDIIE 142