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PSI-O, a new 10-kDa subunit of eukaryotic photosystem I

PSI-O, a new 10-kDa subunit of eukaryotic photosystem I
PSI-O, a new 10-kDa subunit of eukaryotic photosystem I

A novel polypeptide with an apparent molecular mass of 9 kDa was detected after sodium dodecyl sulphate-polyacrylamide gel electrophoresis of Arabidopsis photosystem I (PSI) and was N-terminally sequenced. Corresponding cDNA clones encode a precursor protein of 140 amino acid residues which was imported into isolated intact chloroplasts and processed to the mature protein, designated PSI-O. The mature protein has two transmembrane helices and a calculated mass of 10 104 Da. The PSI-O protein was also shown to be present in PSI isolated from barley and spinach, and was essentially absent in chloroplast grana. Expressed sequences encoding similar proteins are available from many species of plants and green algae.

Arabidopsis, Chloroplast import, Photosynthesis, Photosystem I, Photosystem I-O, PsaO
0014-5793
145-148
Knoetzel, Jürgen
5b9a2161-007f-4b9c-b9b7-7225c2a19e25
Mant, Alexandra
63319e45-deeb-45ad-a30d-e05b42052a0d
Haldrup, Anna
e89fa295-a520-4029-a7cc-48a1022100fa
Jensen, Poul Erik
6722e027-1569-4de7-88e5-94f3b1c196de
Scheller, Henrik Vibe
a751b13f-62f4-4f71-b815-006079cacee0
Knoetzel, Jürgen
5b9a2161-007f-4b9c-b9b7-7225c2a19e25
Mant, Alexandra
63319e45-deeb-45ad-a30d-e05b42052a0d
Haldrup, Anna
e89fa295-a520-4029-a7cc-48a1022100fa
Jensen, Poul Erik
6722e027-1569-4de7-88e5-94f3b1c196de
Scheller, Henrik Vibe
a751b13f-62f4-4f71-b815-006079cacee0

Knoetzel, Jürgen, Mant, Alexandra, Haldrup, Anna, Jensen, Poul Erik and Scheller, Henrik Vibe (2002) PSI-O, a new 10-kDa subunit of eukaryotic photosystem I. FEBS Letters, 510 (3), 145-148. (doi:10.1016/S0014-5793(01)03253-7).

Record type: Article

Abstract

A novel polypeptide with an apparent molecular mass of 9 kDa was detected after sodium dodecyl sulphate-polyacrylamide gel electrophoresis of Arabidopsis photosystem I (PSI) and was N-terminally sequenced. Corresponding cDNA clones encode a precursor protein of 140 amino acid residues which was imported into isolated intact chloroplasts and processed to the mature protein, designated PSI-O. The mature protein has two transmembrane helices and a calculated mass of 10 104 Da. The PSI-O protein was also shown to be present in PSI isolated from barley and spinach, and was essentially absent in chloroplast grana. Expressed sequences encoding similar proteins are available from many species of plants and green algae.

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More information

Published date: 16 January 2002
Keywords: Arabidopsis, Chloroplast import, Photosynthesis, Photosystem I, Photosystem I-O, PsaO

Identifiers

Local EPrints ID: 414029
URI: http://eprints.soton.ac.uk/id/eprint/414029
ISSN: 0014-5793
PURE UUID: 8e1286af-f31a-4844-8b03-b7e89eec7305
ORCID for Alexandra Mant: ORCID iD orcid.org/0000-0001-7169-209X

Catalogue record

Date deposited: 12 Sep 2017 16:32
Last modified: 16 Mar 2024 03:40

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Contributors

Author: Jürgen Knoetzel
Author: Alexandra Mant ORCID iD
Author: Anna Haldrup
Author: Poul Erik Jensen
Author: Henrik Vibe Scheller

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