Nucleotide sequence of the melA gene, coding for alpha-galactosidase in Escherichia coli K-12.

Abstract:

:Melibiose uptake and hydrolysis in E.coli is performed by the MelB and MelA proteins, respectively. We report the cloning and sequencing of the melA gene. The nucleotide sequence data showed that melA codes for a 450 amino acid long protein with a molecular weight of 50.6 kd. The sequence data also supported the assumption that the mel locus forms an operon with melA in proximal position. A comparison of MelA with alpha-galactosidase proteins from yeast and human origin showed that these proteins have only limited homology, the yeast and human proteins being more related. However, regions common to all three proteins were found indicating sequences that might comprise the active site of alpha-galactosidase.

journal_name

Nucleic Acids Res

journal_title

Nucleic acids research

authors

Liljeström PL,Liljeström P

doi

10.1093/nar/15.5.2213

subject

Has Abstract

pub_date

1987-03-11 00:00:00

pages

2213-20

issue

5

eissn

0305-1048

issn

1362-4962

journal_volume

15

pub_type

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