Amino acid sequence of S-adenosyl-L-homocysteine hydrolase from rat liver as derived from the cDNA sequence.
Open Access
- 1 February 1987
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 84 (3) , 719-723
- https://doi.org/10.1073/pnas.84.3.719
Abstract
Rat liver cDNA libraries constructed in .lambda.gt11 were screened for reactivity with polyclonal antibodies to native S-adenosyl-L-homocysteine (AdoHcy) hydrolase (adenosylhomocysteinase; EC 3.3.1.1). Five clones were isolated and sequenced. The amino acid sequence, deduced from the cDNA sequence, contained the sequence of eight peptides obtained by tryptic and cyanogen bromide fragmentation of rat liver AdoHcy hydrolase. Identification of the amino- and carboxylterminal peptides in the amino acid sequence showed that the complete sequence was obtained. A "fingerprint" sequence was found that is characteristic of dinucleotide-binding domains of many proteins. For AdoHcy hydrolase, this region from the lysine at position 213 to the aspartate at position 244, containing the sequence Gly-Xaa-Gly-Xaa-Xaa-Gly at positions 219-224, is presumably the site of binding for NAD+, which is required for the activity of the enzyme.This publication has 49 references indexed in Scilit:
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