>gnl|CDD|73088 cd04588, CBS_pair_CAP-ED_DUF294_assoc_arch, This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the archaeal CAP_ED (cAMP receptor protein effector domain) family of transcription factors and the DUF294 domain. Members of CAP_ED, include CAP which binds cAMP, FNR (fumarate and nitrate reductase) which uses an iron-sulfur cluster to sense oxygen, and CooA a heme containing CO sensor. In all cases binding of the effector leads to conformational changes and the ability to activate transcription. DUF294 is a putative nucleotidyltransferase with a conserved DxD motif. CBS is a small domain originally identified in cystathionine beta-synthase and subsequently found in a wide range of different proteins. CBS domains usually come in tandem repeats, which associate to form a so-called Bateman domain or a CBS pair which is reflected in this model. 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. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown.. Length = 110

 Score = 62.1 bits (151), Expect = 2e-10
 Identities = 36/106 (33%), Positives = 55/106 (51%), Gaps = 1/106 (0%)

Query: 232 LVKIGCPLIDAITILSEKRFGCVAVVDEGQKLKGIITEGDIFRNFHKDLNTLSVEDVMIK 291
            +     L +A  + +        VVD+G KL GI+T  DI     + L    V+DVM K
Sbjct: 5   TLNPNATLREAARLFNTHHIHGAPVVDDG-KLVGIVTLSDIAHAIARGLELAKVKDVMTK 63

Query: 292 NPKVILEDTLLTVAMQLLRQHNISVLMVVDDCQKAIGIVHFLDLLR 337
           +   I ED  L  A++L+ +HN+  L+V DD  + +GI+   D+LR
Sbjct: 64  DVITIDEDEQLYDAIRLMNKHNVGRLIVTDDEGRPVGIITRTDILR 109