Expression of methionine aminopeptidase 2, N-myristoyltransferase, and N-myristoyltransferase inhibitor protein 71 in HT29

Protein myristoylation is a co-translational process, catalyzed by N-myristoyltransferase (NMT) that occurs after the initiating methionine is removed by methionine aminopeptidase (MetAP). The enzymes NMT and MetAP play a major role in the process of myristoylation of oncoproteins including the c-sr...

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Veröffentlicht in:Biochemical and biophysical research communications 2004-09, Vol.322 (3), p.1012-1017
Hauptverfasser: Selvakumar, Ponniah, Lakshmikuttyamma, Ashakumary, Lawman, Zoe, Bonham, Keith, Dimmock, Jonathan R., Sharma, Rajendra K.
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container_end_page 1017
container_issue 3
container_start_page 1012
container_title Biochemical and biophysical research communications
container_volume 322
creator Selvakumar, Ponniah
Lakshmikuttyamma, Ashakumary
Lawman, Zoe
Bonham, Keith
Dimmock, Jonathan R.
Sharma, Rajendra K.
description Protein myristoylation is a co-translational process, catalyzed by N-myristoyltransferase (NMT) that occurs after the initiating methionine is removed by methionine aminopeptidase (MetAP). The enzymes NMT and MetAP play a major role in the process of myristoylation of oncoproteins including the c-src family. In this study, we examined the levels of expression of MetAP2, NMT, and NMT inhibitor protein 71 (NIP71) in human colon cancer cell lines (HCCLs). We examined the influence of cell density on the expression of the above proteins in HT29 cells. Western blot analysis of MetAP2 and NMT demonstrated higher levels of protein expression in low density of HT29 while low expression in high density was observed. In addition, we observed that NIP71 and pp60 c-src expressions were dependent on the cell density of HT29. This is the first study demonstrating the expression of MetAP2, NMT, pp60 c-src, and NIP71 in HCCLs.
doi_str_mv 10.1016/j.bbrc.2004.08.021
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subjects Acyltransferases - genetics
Aminopeptidases - genetics
Cell Line, Tumor
Colonic Neoplasms
Enzyme Inhibitors - metabolism
Gene Expression Regulation, Enzymologic - genetics
Gene Expression Regulation, Neoplastic - genetics
Humans
Lipid modification
Metalloendopeptidases - genetics
Methionine aminopeptidase 2
Myristoylation
N-Myristoyltransferase
N-Myristoyltransferase inhibitor protein
Neoplasm Proteins - genetics
pp60 c-src
title Expression of methionine aminopeptidase 2, N-myristoyltransferase, and N-myristoyltransferase inhibitor protein 71 in HT29
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