In:
FEBS Letters, Wiley, Vol. 296, No. 1 ( 1992-01-13), p. 29-32
Abstract:
Using electron microscopy of negatively stained specimens, we have investigated the shape and degree or association or photosystem (PS) I complexes in cyanobacterial thylakoid membranes. When incubated at high concentrations of magnesium chloride ( 〉 0.15 M), the PSI complexes from small ordered arrays in the membrane composed of monomeric complexes in a PI square lattice of dimensions a = b =11 nm. Averaged projections of the complex resemble chose found for the purified PSI reaction centre arter reconstitution (Ford, R.C, Hefti, A. and Engel, A. (1990) EMBO J. 9, 3067‐3075). Some small differences in its shape are discussed, with particular reference to the differences in the polypeptide composition of the 2 preparations. We find that the complex remains in the monomeric form in the thylakoid membrane under all the conditions tested.
Type of Medium:
Online Resource
ISSN:
0014-5793
,
1873-3468
DOI:
10.1016/0014-5793(92)80396-X
Language:
English
Publisher:
Wiley
Publication Date:
1992
detail.hit.zdb_id:
1460391-3
SSG:
12
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