CCA tRNK nukleotidiltransferaza
CCA tRNK nukleotidiltransferaza (EC 2.7.7.72, enzim CCA dodavanja, tRNK CCA-pirofosforilaza, tRNK-nukleotidiltransferaza, transfer-RNK nukleotidiltransferaza, transfer ribonukleinska kiselina nukleotidil transferaza, CTP(ATP):tRNK nukleotidiltransferaza, transfer ribonukleat adenililtransferaza, transfer ribonukleat adeniltransferaza, transfer RNK adenililtransferaza, transfer ribonukleat nukleotidiltransferaza, ATP (CTP):tRNK nukleotidiltransferaza, ribonukleinska citidilna citidilna adenilna pirofosforilaza, transfer ribonukleinska adenilil (citidilil) transferaza, transfer ribonukleinska-terminal trinukleotid nukleotidiltransferaza, transfer ribonukleat citidililtransferaza, ribonukleinska citidililtransferaza, -C-C-A pirofosforilaza, ATP(CTP)-tRNK nukleotidiltransferaza, tRNK adenilil(citidilil)transferaza, CTP:tRNK citidililtransferaza) je enzim sa sistematskim imenom CTP,CTP,ATP:tRNK citidilil,citidilil,adenililtransferaza.[1][2][3][4][5] Ovaj enzim katalizuje sledeću hemijsku reakciju
| CCA tRNK nukleotidiltransferaza | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifikatori | |||||||||
| EC broj | 2.7.7.72 | ||||||||
| Baze podataka | |||||||||
| IntEnz | IntEnz pregled | ||||||||
| BRENDA | BRENDA pristup | ||||||||
| ExPASy | NiceZyme pregled | ||||||||
| KEGG | KEGG pristup | ||||||||
| MetaCyc | metabolički put | ||||||||
| PRIAM | profil | ||||||||
| Strukture PBP | RCSB PDB PDBe PDBj PDBsum | ||||||||
| |||||||||
- tRNK prekurzor + 2 CTP + ATP tRNK sa 3' CCA krajem + 3 difosfat (sveukupna reakcija)
- (1a) tRNK prekurzor + CTP a tRNK sa 3' citidin krajem + difosfat
- (1b) tRNK sa 3' citidinom + CTP tRNK sa 3' CC krajem + difosfat
- (1c) tRNK sa 3' CC krajem + ATP tRNK sa 3' CCA krajem + difosfat
Acilacija svih tRNK molekula aminokiselinom odvija se na terminalnoj ribozi 3' CCA sekvence.
Reference уреди
- ^ Schofield, P. & Williams, K.R. (1977). „Purification and some properties of Escherichia coli tRNA nucleotidyltransferase”. J. Biol. Chem. 252: 5584—5588. PMID 328503.
- ^ Shi, P.Y., Maizels, N. and Weiner, A.M. (1998). „CCA addition by tRNA nucleotidyltransferase: polymerization without translocation”. EMBO J. 17: 3197—3206. PMID 9606201.
- ^ Augustin, M.A., Reichert, A.S., Betat, H., Huber, R., Morl, M. and Steegborn, C. (2003). „Crystal structure of the human CCA-adding enzyme: insights into template-independent polymerization”. J. Mol. Biol. 328: 985—994. PMID 12729736.
- ^ Yakunin, A.F., Proudfoot, M., Kuznetsova, E., Savchenko, A., Brown, G., Arrowsmith, C.H. and Edwards, A.M. (2004). „The HD domain of the Escherichia coli tRNA nucleotidyltransferase has 2′,3′-cyclic phosphodiesterase, 2′-nucleotidase, and phosphatase activities”. J. Biol. Chem. 279: 36819—36827. PMID 15210699.
- ^ Hou, Y.M. (2010). „CCA addition to tRNA: implications for tRNA quality control”. IUBMB Life. 62: 251—260. PMID 20101632.
Literatura уреди
- Nicholas C. Price; Lewis Stevens (1999). Fundamentals of Enzymology: The Cell and Molecular Biology of Catalytic Proteins (Third изд.). USA: Oxford University Press. ISBN 019850229X.
- Eric J. Toone (2006). Advances in Enzymology and Related Areas of Molecular Biology, Protein Evolution (Volume 75 изд.). Wiley-Interscience. ISBN 0471205036.
- Branden C; Tooze J. Introduction to Protein Structure. New York, NY: Garland Publishing. ISBN 0-8153-2305-0.
- Irwin H. Segel. Enzyme Kinetics: Behavior and Analysis of Rapid Equilibrium and Steady-State Enzyme Systems (Book 44 изд.). Wiley Classics Library. ISBN 0471303097.
- William P. Jencks (1987). Catalysis in Chemistry and Enzymology. Dover Publications. ISBN 0486654605.
Spoljašnje veze уреди
- CCA+tRNA+nucleotidyltransferase на US National Library of Medicine Medical Subject Headings (MeSH)
