Chemical crosslinking studies of extrinsic proteins in cyanobacterial photosystem II

Kab Cho Han, Jian-Ren Shen, Masahiko Ikeuchi, Yorinao Inoue

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Chemical crosslinking with a zero-length crosslinker, 1-ethyl-3-(3-dimethylaminopropyl) carbodimide hydrochloride, was applied to a cyanobacterial photosystem II complex retaining three extrinsic proteins, the 33 kDa manganese-stabilizing protein, cytochrome (cyt) c-550 and the 12 kDa protein. Three major crosslinked products were obtained in addition to the crosslinked product between the extrinsic 33 kDa and the intrinsic CP47 proteins. They were identified to be: cyt c-550-12 kDa; cyt c-550-12 kDa-33 kDa; D2-cyt c-550-12 kDa. These results indicate that the three extrinsic proteins are closely located with each other in cyanobacterial PSII, supporting the previous proposal that, like the 33 kDa protein, cyt c-550 and the 12 kDa protein are associated with PSII at the lumenal side of thylakoids. The results also suggested that the D2 reaction center protein provides a direct binding site for the extrinsic cyt c-550.

Original languageEnglish
Pages (from-to)121-124
Number of pages4
JournalFEBS Letters
Volume355
Issue number2
DOIs
Publication statusPublished - Nov 28 1994
Externally publishedYes

Fingerprint

Photosystem II Protein Complex
Crosslinking
Cytochromes c
Proteins
Thylakoids
Manganese
Binding Sites

Keywords

  • Crosslinking
  • Cytochrome c-550
  • Extrinsic protein
  • O evolution
  • Photosystem II
  • Synechococcus

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Molecular Biology

Cite this

Chemical crosslinking studies of extrinsic proteins in cyanobacterial photosystem II. / Han, Kab Cho; Shen, Jian-Ren; Ikeuchi, Masahiko; Inoue, Yorinao.

In: FEBS Letters, Vol. 355, No. 2, 28.11.1994, p. 121-124.

Research output: Contribution to journalArticle

Han, Kab Cho ; Shen, Jian-Ren ; Ikeuchi, Masahiko ; Inoue, Yorinao. / Chemical crosslinking studies of extrinsic proteins in cyanobacterial photosystem II. In: FEBS Letters. 1994 ; Vol. 355, No. 2. pp. 121-124.
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