Interacts with phosphorylated C-terminal heptapeptide repeat domain (CTD) of the largest RNA polymerase II subunit POLR2A, and participates in dephosphorylation of the CTD. Transcriptional regulator which enhances expression of CCND1. Promotes binding of RNA polymerase II to the CCDN1 promoter and to the termination region before the poly-A site but decreases its binding after the poly-A site. Prevents RNA polymerase II from reading through the 3' end termination site and may allow it to be recruited back to the promoter through promotion of the formation of a chromatin loop. Also enhances the transcription of a number of other cell cycle-related genes including CDK2, CDK4, CDK6 and cyclin-E but not CDKN1A, CDKN1B or cyclin-A. Promotes cell proliferation.
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Protein Aliases: 70 kDa zeta associated protein; 70 kDa zeta-associated protein; 70 kDa zeta-chain associated protein; STD; Syk related tyrosine kinase; syk-related protein tyrosine kinase; Syk-related tyrosine kinase; Tyrosine protein kinase ZAP 70; Tyrosine-protein kinase ZAP-70; TZK; ZAP 70; ZAP70; zeta chain of T cell receptor associated protein kinase 70kDa; zeta-chain (TCR) associated protein kinase 70kDa; zeta-chain associated protein kinase, 70kD
Gene Aliases: ADMIO2; IMD48; mrtle; mur; SRK; STCD; STD; TZK; ZAP-70; ZAP70