| Primary Identifier | IPR053965 | Type | Domain |
| Short Name | INTS1_R4 |
| description | Integrator (INT) complex is involved in the small nuclear RNAs (snRNA) U1 and U2 transcription and in their 3'-box-dependent processing. It binds the C-terminal domain (CTD) of RNA polymerase II (Pol II) and functions as an RNA endonuclease to cleave different classes of RNAs, regulating the transcription of both protein-coding genes and noncoding elements []. Integrator also associates with protein phosphatase 2A (PP2A) core enzyme to form the INTAC complex []which regulates transcription through dephosphorylation of Pol II CTD.This entry includes the Integrator complex subunit 1 (INTS1) which forms the backbone module of the complex (it consists of four modules: backbone, shoulder, phosphatase and endonuclease) through the association with INTS2 and INTS7 to form a rigid scaffold. The backbone and shoulder modules form a central cruciform scaffold. INTS1 contains four repetitive helix hairpin domains towards the C-terminal (R1-R4); this entry represents R4 domain []. |
