Rawlings ND, Barrett AJ. Tripeptidyl-peptidase I is apparently the CLN2 protein absent in classical late-infantile neuronal ceroid lipofuscinosis.
BIOCHIMICA ET BIOPHYSICA ACTA 1999;
1429:496-500. [PMID:
9989235 DOI:
10.1016/s0167-4838(98)00238-6]
[Citation(s) in RCA: 75] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report that fragments of amino acid sequence recently described for tripeptidyl-peptidase I (TPP I) show that it is the rat homologue of the human CLN2 gene product that is deficient in classical late-infantile neuronal ceroid lipofuscinosis. This is unexpected, since the CLN2 protein has been thought to be a carboxyl-dependent endopeptidase, but TPP I is an exopeptidase possibly of serine-type.
Collapse