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Table 3 RNAi system with transcription/translation machinery

From: Comparing 2-nt 3' overhangs against blunt-ended siRNAs: a systems biology based study

Reaction Number

Reaction

Rate Constant

Remarks

1

mRNA + siRNA -> gRNA

0.008 hr-1

 

2

dsRNA -> 10*siRNA

2.0 hr-1

 

3

mRNA -> dsRNA

0.002 hr-1

 

4

siRNA ->Ï•

2.0 hr-1

 

5

mRNA ->Ï•

18 hr-1

 

6

gRNA ->Ï•

2.8 hr-1

 

7

O + R -> O_R

12.0 hr-1

Regulatory molecule R binds to the operator region O to form the bound complex O_R

8

O_R -> O + R

0.24 hr-1

O_R dissociates into free R and O

9

P + RNAP -> P_RNAPC

1.2 hr-1

RNAP binds to promoter region P forming closed complex P_RNAPC

10

P_RNAPC -> P + RNAP

0.06 hr-1

P_RNAPC dissociates into free RNAP and P

11

P_RNAPC -> P_RNAPO

48 hr-1

Isomerization of closed to open complex (P_RNAPO)

12

P_RNAPO -> TrRNAP + mRNA + P

54 hr-1

RNAP clears promoter region and mRNA chain synthesis starts. TrRNAP denotes transcribing RNA polymerase.

13

TrRNAP -> RNAP

4.8 hr-1

RNAP completes transcription and is released from DNA.

14

mRNA + Ribosome -> RibRBS

0.6 hr-1

Ribosome binds to mRNA forming bound complex RibRBS

15

RibRBS -> mRNA+ Ribosome

0.06 hr-1

Ribosome dissociation from RibRBS

16

RibRBS -> EIRib + mRNA

18 hr-1

Ribosome EIRib initiates translation of mRNA chain

17

EIRib -> protein

48 hr-1

Protein synthesis by transcribing ribosome

18

protein ->Ï•

0.18 hr-1

Protein product degradation