3k7a Summary

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Crystal Structure of an RNA polymerase II-TFIIB complex

The structure was published by Liu, X., Bushnell, D.A., Wang, D., Calero, G., and Kornberg, R.D., in 2010 in a paper entitled "Structure of an RNA polymerase II-TFIIB complex and the transcription initiation mechanism." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 3.8 Å and deposited in 2009.

The experimental data on which the structure is based was also deposited.

This entry contains 20 copies of 11 unique biopolymers (complete list).

It also contains one or more heterogenic compounds (e.g., ligands, co-factors, ions, modified amino acids, etc.); see here for a complete list.

The most likely quaternary structure is a 11meric assembly.


The are more than 5 unique protein polymers in this entry. More information is available on the Uniprot cross references page.

This entry contains 11 unique UniProt proteins:

UniProt accession Name Organism PDB
P04050 (1 - 1733) DNA-directed RNA polymerase II subunit RPB1 Saccharomyces cerevisiae
P08518 (1 - 1224) DNA-directed RNA polymerase II subunit RPB2 Saccharomyces cerevisiae
P16370 (1 - 318) DNA-directed RNA polymerase II subunit RPB3 Saccharomyces cerevisiae
P20434 (1 - 215) DNA-directed RNA polymerases I, II, and III subunit RPABC1 Saccharomyces cerevisiae
P20435 (1 - 155) DNA-directed RNA polymerases I, II, and III subunit RPABC2 Saccharomyces cerevisiae
P20436 (1 - 146) DNA-directed RNA polymerases I, II, and III subunit RPABC3 Saccharomyces cerevisiae
P27999 (1 - 122) DNA-directed RNA polymerase II subunit RPB9 Saccharomyces cerevisiae
P22139 (1 - 70) DNA-directed RNA polymerases I, II, and III subunit RPABC5 Saccharomyces cerevisiae
P38902 (1 - 120) DNA-directed RNA polymerase II subunit RPB11 Saccharomyces cerevisiae
P40422 (1 - 70) DNA-directed RNA polymerases I, II, and III subunit RPABC4 Saccharomyces cerevisiae
P29055 (1 - 345) Transcription initiation factor IIB Saccharomyces cerevisiae

For more information on cross references to other databases click Cross references in the menu on the left.