Motion in T7 Phage RNA Polymerase [t7rnapol]

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Classification [D-h-2]

Structures 1ARO with lysozyme 1CEZ promoter complex 1QLN initiation complex 1MSQ elongation complex

Description The N-terminal domain undergoes a massive change in tertiary structure during the transition from initiation to elongation phase, involving a 70 Angstrom movement of one domain. This refolding opens an exit tunnel for the seven-nucleotide mRNA chain, which would otherwise be sterically blocked in the initiation complex.

References Yin YW, Steitz TA (2002). Structural basis for the transition from initiation to elongation transcription in T7 RNA p olymerase. Science 298:1387-95. [Medline info for 12242451] Cheetham GM, Steitz TA (1999). Structure of a transcribing T7 RNA polymerase initiation complex. Science 286:2305-9. [Medline info for 10600732] G M Cheetham, D Jeruzalmi, T A Steitz (1999). Structural basis for initiation of transcription from an RNA polymerase-promoter complex. Nature, 399:80-3 [Medline info for 10331394] D Jeruzalmi, T A Steitz (1998). Structure of T7 RNA polymerase complexed to the transcriptional inhibitor T7 lysozyme. EMBO J, 17:4101-13 [Medline info for 9670025]

GO terms associated with structures Molecular function N-acetylmuramoyl-L-alanine amidase activity, DNA binding, DNA-directed RNA polymerase activity Biological process transcription, peptidoglycan catabolism

Morphs

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Best representative Morph Morph name Structure #1 Structure #2 Residues T7 RNA Polymerase 1qln [ A ] 1msw [ D ] 883

User-submitted morphs Morph Morph name Structure #1 Structure #2 Residues 578798-7483 T 7 RNA polymerase 1qln [ A ] 1h38 [ A ] 883 601831-8627 T7 RNA Polymerase 1cez [ A ] 1aro [ P ] 883 991400-14729 T7 RNA polymerase upload [ D ] upload [ A ] 883 992132-14843 T7 RNA Polymerase upload [ A ] upload [ D ] 883 993667-16380 T7 RNA polymerase upload [ A ] upload [ D ] 883 546673-1365 T7 RNA polymerase 1cez [ A ] 1qln [ A ] 883 663298-7500 T7 RNA polymerase 1cez [ A ] 1aro [ P ] 883 759062-15095 T7 RNA Polymerase upload [ D ] upload [ D ] 883 567662-5028 T7 RNA polymerase 1qln [ A ] 1h38 [ A ] 883 663556-7561 T7 RNA polymerase New Elong Motion 1h38 [ A ] 1s0v [ A ] 883

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Copyright 1995-2005 M. Gerstein, W. Krebs, S. Flores, N. Echols, and others
Email: Mark.Gerstein _at_ yale.edu