>cd05787 LbH_eIF2B_epsilon eIF-2B epsilon subunit, central Left-handed parallel beta-Helix (LbH) domain: eIF-2B is a eukaryotic translation initiator, a guanine nucleotide exchange factor (GEF) composed of five different subunits (alpha, beta, gamma, delta and epsilon). eIF2B is important for regenerating GTP-bound eIF2 during the initiation process. This event is obligatory for eIF2 to bind initiator methionyl-tRNA, forming the ternary initiation complex. The eIF-2B epsilon subunit contains an N-terminal domain that resembles a dinucleotide-binding Rossmann fold, a central LbH domain containing 4 turns, each containing three imperfect tandem repeats of a hexapeptide repeat motif (X-[STAV]-X-[LIV]-[GAED]-X), and a C-terminal domain of unknown function that is present in eIF-4 gamma, eIF-5, and eIF-2B epsilon. The epsilon and gamma subunits form the catalytic subcomplex of eIF-2B, which binds eIF2 and catalyzes guanine nucleotide exchange.

Probab=98.90  E-value=7e-09  Score=76.00  Aligned_cols=47  Identities=19%  Similarity=0.220  Sum_probs=20.2

Q ss_pred             ECCCCEECCCCEECCCCEECCCCEECCCCEECCCCEEEEEEECCCCCEE
Q ss_conf             9889899565598899899889898668689168468655311434223
Q gi|255764481|r   22 IGPNSLIGPFCCVGSEVEIGAGVELISHCVVAGKTKIGDFTKVFPMAVL   70 (271)
Q Consensus        22 Ig~~v~Igp~~~I~~~v~IG~~~~I~~~v~I~g~t~IG~~~~I~~~a~I   70 (271)
T Consensus         2 IG~~t~Ig~~~~I-~~svIG~nc~Ig~~~~I~-~svi~d~~~Ig~~~~i   48 (79)
T cd05787           2 IGRGTSIGEGTTI-KNSVIGRNCKIGKNVVID-NSYIWDDVTIEDGCTI   48 (79)
T ss_pred             CCCCCEECCCCEE-ECCEECCCCEECCCCEEE-CCEEECCCEECCCCEE
T ss_conf             9998999999999-599989999999998894-8999197899999999