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FCP1, the RAP74-interacting Subunit of a Human Protein Phosphatase That Dephosphorylates the Carboxyl-Terminal Domain of RNA Polymerase IIO

J Archambault, G Pan, G K Dahmus, M Cartier, N Marshall, S Zhang, M E Dahmus, J Greenblatt

J Biol Chem. 1998 Oct 16;273(42):27593-601.

PMID: 9765293

Abstract:

TFIIF (RAP30/74) is a general initiation factor that also increases the rate of elongation by RNA polymerase II. A two-hybrid screen for RAP74-interacting proteins produced cDNAs encoding FCP1a, a novel, ubiquitously expressed human protein that interacts with the carboxyl-terminal evolutionarily conserved domain of RAP74. Related cDNAs encoding FCP1b lack a carboxyl-terminal RAP74-binding domain of FCP1a. FCP1 is an essential subunit of a RAP74-stimulated phosphatase that processively dephosphorylates the carboxyl-terminal domain of the largest RNA polymerase II subunit. FCP1 is also a stoichiometric component of a human RNA polymerase II holoenzyme complex.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
IAR42414918 TFIIF (RAP74 subunit) human TFIIF (RAP74 subunit) human Price
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