beta-galactosidase subunit beta [Escherichia coli].

LOCUS       WP_001219951             149 aa            linear   BCT 28-NOV-2019
ACCESSION   WP_001219951
VERSION     WP_001219951.1
KEYWORDS    RefSeq.
SOURCE      Escherichia coli
  ORGANISM  Escherichia coli
            Bacteria; Pseudomonadati; Pseudomonadota; Gammaproteobacteria;
            Enterobacterales; Enterobacteriaceae; Escherichia.
REFERENCE   1  (residues 1 to 149)
  AUTHORS   Hall,B.G.
  TITLE     The EBG system of E. coli: origin and evolution of a novel
            beta-galactosidase for the metabolism of lactose
  JOURNAL   Genetica 118 (2-3), 143-156 (2003)
   PUBMED   12868605
REFERENCE   2  (residues 1 to 149)
  AUTHORS   Stokes,H.W. and Hall,B.G.
  TITLE     Sequence of the ebgR gene of Escherichia coli: evidence that the
            EBG and LAC operons are descended from a common ancestor
  JOURNAL   Mol. Biol. Evol. 2 (6), 478-483 (1985)
   PUBMED   3939708
REFERENCE   3  (residues 1 to 149)
  AUTHORS   Stokes,H.W., Betts,P.W. and Hall,B.G.
  TITLE     Sequence of the ebgA gene of Escherichia coli: comparison with the
            lacZ gene
  JOURNAL   Mol. Biol. Evol. 2 (6), 469-477 (1985)
   PUBMED   3939707
REFERENCE   4  (residues 1 to 149)
  AUTHORS   Campbell,J.H., Lengyel,J.A. and Langridge,J.
  TITLE     Evolution of a second gene for beta-galactosidase in Escherichia
            coli
  JOURNAL   Proc. Natl. Acad. Sci. U.S.A. 70 (6), 1841-1845 (1973)
   PUBMED   4124306
COMMENT     REFSEQ: This record represents a single, non-redundant, protein
            sequence which may be annotated on many different RefSeq genomes
            from the same, or different, species.
            
            ##Evidence-For-Name-Assignment-START##
            Evidence Category  :: HMM
            Evidence Accession :: NF007571.0
            Evidence Source    :: NCBI Protein Cluster (PRK)
            Source Identifier  :: PRK10202
            ##Evidence-For-Name-Assignment-END##
            COMPLETENESS: full length.
FEATURES             Location/Qualifiers
     source          1..149
                     /organism="Escherichia coli"
                     /db_xref="taxon:562"
     Protein         1..149
                     /product="beta-galactosidase subunit beta"
                     /EC_number="3.2.1.23"
                     /calculated_mol_wt=17303
     Region          1..149
                     /region_name="ebgC"
                     /note="beta-galactosidase subunit beta; PRK10202"
                     /db_xref="CDD:182302"
ORIGIN      
        1 mriidnleqf rqiyasgkkw qrcveaieni dniqpgvahs igdsltyrve tdsatdalft
       61 ghrryfevhy ylqgqqkiey apketlqvve yyrdetdrey lkgcgetvev degqivicdi
      121 heayrficnn avkkvvlkvt iedgyfhnk