Reaction Details
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Cell Reactant:
Rho Transcription Termination Factor
Syringe Reactant:
BDBM22600
Meas. Tech.:
Isothermal Titration Calorimetry
Entry Date.:
2008-06-14
ΔG°:
-6.01±0.08 (kcal/mole)
pH:
7.9000±n/a
Log10Kb:
3.5
Temperature:
299.1500±n/a (K)
ΔHobs :
-0.79±0.72 (kJ/mole)
Corrected for ΔHioniz:
no
Stoich. Param.:
6.0000
ΔS° :
0.02±0 (kJ/mole-K)
Comments:
The stoichiometry parameter was fixed to six, or for the two site model, two integers with a sum of six.
Citation

Cell React
Source:
The open reading frame encoding the full-length Escherichia coli Rho protein was PCR amplified and cloned. The protein was overexpressed in E. coli strain BL21 (pLysS).
Purity:
99%
Prep. Method:
The protein was twice purified over a POROS-HS column (Perseptive Biosystems) then further purified with two successive Sephacryl S-300 (Amersham) sizing columns. The protein at this stage was more than 99% pure as judged by SDS-PAGE.
Name:
Rho Transcription Termination Factor
Synonyms:
ATP-dependent helicase rho | RHO_ECOLI | rho | nitA | psuA | rnsC | sbaA | tsu
Type:
Enzyme
Mol. Mass.:
47006.70
Organism:
Escherichia coli (strain K12)
Description:
Rho is a hexameric RNA/DNA helicase/translocase.
Residue:
419
Sequence:
MNLTELKNTPVSELITLGENMGLENLARMRKQDIIFAILKQHAKSGEDIFGDGVLEILQDGFGFLRSADSSYLAGPDDIYVSPSQIRRFNLRTGDTISGKIRPPKEGERYFALLKVNEVNFDKPENARNKILFENLTPLHANSRLRMERGNGSTEDLTARVLDLASPIGRGQRGLIVAPPKAGKTMLLQNIAQSIAYNHPDCVLMVLLIDERPEEVTEMQRLVKGEVVASTFDEPASRHVQVAEMVIEKAKRLVEHKKDVIILLDSITRLARAYNTVVPASGKVLTGGVDANALHRPKRFFGAARNVEEGGSLTIIATALIDTGSKMDEVIYEEFKGTGNMELHLSRKIAEKRVFPAIDYNRSGTRKEELLTTQEELQKMWILRKIIHPMGEIDAMEFLINKLAMTKTNDDFFEMMKRS