>gnl|CDD|73136 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 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 = 106

 Score = 68.7 bits (168), Expect = 4e-12
 Identities = 42/108 (38%), Positives = 66/108 (61%), Gaps = 5/108 (4%)

Query: 101 NPVTISPYATLADALALMKKYSISGIPVVESDVGKLVGILTNRD-VRFASNAQQAVGELM 159
           N V ++   T  D L L+K+Y +SG+PVV+   G+LVGI+T +D +R     Q A+  LM
Sbjct: 2   NVVYVTLPGTRDDVLELLKEYKVSGVPVVK-KSGELVGIITRKDLLRNPEEEQLAL--LM 58

Query: 160 TRNLITVKKTVNLENAKALLHQHRIEKLLVVDDDGCCIGLITVKDIER 207
           TR+  TV    +++ A  L+ ++ I ++ VVDD    +G++TV DI R
Sbjct: 59  TRDPPTVSPDDDVKEAAKLMVENNIRRVPVVDDGK-LVGIVTVADIVR 105