>gnl|CDD|151009 pfam10431, ClpB_D2-small, C-terminal, D2-small domain, of ClpB protein. This is the C-terminal domain of ClpB protein, referred to as the D2-small domain, and is a mixed alpha-beta structure. Compared with the D1-small domain (included in AAA, pfam00004) it lacks the long coiled-coil insertion, and instead of helix C4 contains a beta-strand (e3) that is part of a three stranded beta-pleated sheet. In Thermophilus the whole protein forms a hexamer with the D1-small and D2-small domains located on the outside of the hexamer, with the long coiled-coil being exposed on the surface. The D2-small domain is essential for oligomerisation, forming a tight interface with the D2-large domain of a neighbouring subunit and thereby providing enough binding energy to stabilize the functional assembly. The domain is associated with two Clp_N, pfam02861, at the N-terminus as well as AAA, pfam00004 and AAA_2, pfam07724. Length = 89

 Score = 52.8 bits (128), Expect = 2e-07
 Identities = 18/86 (20%), Positives = 35/86 (40%), Gaps = 7/86 (8%)

Query: 316 LDENSLIRILSEPKNALIKQYQCLFDMEDVELVFHEDALREIARCAIAHKTGARGLRSIL 375
           L +  L +I+      L +  + L +   + L   + A   +A      + GAR LR  +
Sbjct: 1   LSKEELRQIVDL---QLKRLQKRLAER-GITLELTDAAKDWLAEKGYDPEYGARPLRRAI 56

Query: 376 EKILLDTMFELP---MLKGVSSVIIS 398
           ++ + D + E      LK   +V + 
Sbjct: 57  QREIEDPLAEEILSGELKEGDTVRVD 82