RPSBLAST alignment for GI: 254780537 and conserved domain: cd00636

>gnl|CDD|29734 cd00636, TroA-like, Helical backbone metal receptor (TroA-like domain). These proteins have been shown to function in the ABC transport of ferric siderophores and metal ions such as Mn2+, Fe3+, Cu2+ and/or Zn2+. Their ligand binding site is formed in the interface between two globular domains linked by a single helix. Many of these proteins also possess a low complexity region containing a metal-binding histidine-rich motif (repetitive HDH sequence). The TroA-like proteins differ in their fold and ligand-binding mechanism from the PBPI and PBPII proteins, but are structurally similar, however, to the beta-subunit of the nitrogenase molybdenum-iron protein MoFe. Most TroA-like proteins are encoded by ABC-type operons and appear to function as periplasmic components of ABC transporters in metal ion uptake.. Length = 148

 Score = 42.2 bits (98), Expect = 2e-04
 Identities = 34/180 (18%), Positives = 56/180 (31%), Gaps = 45/180 (25%)

Query: 24  KVVLSSFSIIGDITQNIAKDLVTVTTLVEAGNDS-------------HSYQVTSADAIKI 70
           K V++      ++   +  D   V     +G                H Y+  + + I  
Sbjct: 1   KRVVALDPGATELLLALGGDDKPVGVADPSGYPPEAKALLEKVPDVGHGYEP-NLEKIAA 59

Query: 71  QNADLILCNGLHLEETYMKYFTNLKKGTKIITVTDGINPIGVSEDTSVDSEPNPHAWMSL 130
              DLI+ NG  LE    K     K    ++ V +                      +SL
Sbjct: 60  LKPDLIIANGSGLEAWLDKL---SKIAIPVVVVDEASE-------------------LSL 97

Query: 131 TNAMIYIENIRKALTALDPSNAKKYELNAREYSEKIRNSILPLKTRIEKVDPEKRWFVTS 190
            N    I  I KAL           E NA E   ++   +  L+ ++ K+  +K   V  
Sbjct: 98  ENIKESIRLIGKALG---------KEENAEELIAELDARLAELRAKLAKIPKKKVSLVVG 148