Protein Domain : IPR008431

Type:  Family Name:  Cyclic nucleotide phosphodiesterase
Description:  This family consists of the eukaryotic protein 2',3'-cyclic nucleotide 3'-phosphodiesterase (CNP). 2',3'-cyclic nucleotide 3'-phosphodiesterase (CNP) is one of the earliest myelin-related proteins expressed in differentiating oligodendrocytes and Schwann cells. CNP is abundant in the central nervous system and in oligodendrocytes. This protein is also found in mammalian photoreceptor cells, testis and lymphocytes. Although the biological function of CNP is unknown, it is thought to play a significant role in the formation of the myelin sheath, where it comprises 4% of total protein. CNP selectively cleaves 2',3'-cyclic nucleotides to produce 2'-nucleotides in vitro. Although physiologically relevant substrates with 2',3'-cyclic termini are still unknown, numerous cyclic phosphate containing RNAs occur transiently within eukaryotic cells. Other known protein families capable of hydrolysing 2',3'-cyclic nucleotides include tRNA ligases and plant cyclic phosphodiesterases. The catalytic domains from all these proteins contain two tetra-peptide motifs H-X-T/S-X, where X is usually a hydrophobic residue. Mutation of either histidine in CNP abolishes enzymatic activity []. Short Name:  CNPase

0 Child Features

2 Contains

DB identifier Type Name
IPR009097 Domain RNA ligase/cyclic nucleotide phosphodiesterase
IPR010488 Domain Zeta toxin domain

3 Cross Referencess

Identifier
PTHR10156
PF05881
PIRSF000970

0 Found In

3 GO Annotations

GO Term Gene Name
GO:0004113 IPR008431
GO:0009214 IPR008431
GO:0016020 IPR008431

3 Ontology Annotations

GO Term Gene Name
GO:0004113 IPR008431
GO:0009214 IPR008431
GO:0016020 IPR008431

0 Parent Features

0 Proteins

1 Publications

First Author Title Year Journal Volume Pages PubMed ID
            11885989