FEATURES

FAMILY

DESCRIPTION

Also known as ZCHC8_HUMAN, ZCCHC8. Scaffolding subunit of the trimeric nuclear exosome targeting (NEXT) complex that is involved in the surveillance and turnover of aberrant transcripts and non-coding RNAs (PubMed:27871484). NEXT functions as an RNA exosome cofactor that directs a subset of non-coding short-lived RNAs for exosomal degradation. May be involved in pre-mRNA splicing (Probable). It is required for 3'-end maturation of telomerase RNA component (TERC), TERC 3'-end targeting to the nuclear RNA exosome, and for telomerase function (PubMed:31488579). Component of a nuclear TRAMP-like complex, an ATP-dependent exosome regulatory complex consisting of a helicase (MTREX), an oligadenylate polymerase (TENT4B or TENT4A), and a substrate specific RNA-binding factor (ZCCHC7 or ZCCHC8). Several TRAMP-like complexes exist with specific compositions and are associated with nuclear, or nucleolar RNA exosomes. Identified in the spliceosome C complex. Component of the nuclear exosome targeting (NEXT) complex composed of MTREX, ZCCHC8, and RBM7 that directs a subset of non-coding short-lived RNAs for exosomal degradation (PubMed:27905398, PubMed:27871484). Interacts with proteins involved in RNA processing and degradation such as MTREX and RBM7; interaction with MTREX enhances MTREX RNA helicase activity and bridges between RBM7 and MTREX (PubMed:16263084, PubMed:27905398, PubMed:27871484). Interacts with TERC, the telomerase RNA component (PubMed:31488579).

EXTERNAL LINKS

ZCCHC8

Zinc finger CCHC domain-containing protein 8

ZCCHC8

Molecular Synopsis