| Autor: |
Allwood EG; Division of Biochemistry, Royal Holloway and Bedford New College, University of London, Egham, Surrey, UK., Davies DR, Gerrish C, Ellis BE, Bolwell GP |
| Jazyk: |
angličtina |
| Zdroj: |
FEBS letters [FEBS Lett] 1999 Aug 20; Vol. 457 (1), pp. 47-52. |
| DOI: |
10.1016/s0014-5793(99)00998-9 |
| Abstrakt: |
The site of phosphorylation of phenylalanine ammonia-lyase (PAL) has been identified as a threonine residue. A Ca(2+)-stimulated protein kinase of approximately 55 kDa has been partially purified from elicited cells. The kinase can phosphorylate a synthetic peptide derived from PAL and a recombinant poplar PAL. PAL phosphorylation was associated with a decrease in Vmax in agreement with the suggestion that protein phosphorylation is involved in marking PAL subunits for turnover. The phosphorylation site in French bean PAL is most likely Thr545 in the sequence VAKRTLTT (539-546). Conservation of the phosphorylation site in PAL from diverse species suggests that phosphorylation of PAL may be a ubiquitous regulatory mechanism in higher plants. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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