TY - JOUR
T1 - Localization of two phylloquinones, Q(K) and Q(K)', in an improved electron density map of photosystem I at 4-Å resolution
AU - Klukas, Olaf
AU - Schubert, Wolf Dieter
AU - Jordan, Patrick
AU - Krauß, Norbert
AU - Fromme, Petra
AU - Witt, Horst Tobias
AU - Saenger, Wolfram
PY - 1999/3/12
Y1 - 1999/3/12
N2 - An improved electron density map of photosystem I from Synechococcus elongatus calculated at 4-Å resolution for the first time reveals a second phylloquinone molecule and thereby completes the set of cofactors constituting the electron transfer system of this iron-sulfur type photosynthetic reaction center: six chlorophyll a, two phylloquinones, and three Fe4S4 clusters. The location of the newly identified phylloquinone pair, the individual plane orientations of these molecules, and the resulting distances to other cofactors of the electron transfer system are discussed and compared with those determined by magnetic resonance techniques.
AB - An improved electron density map of photosystem I from Synechococcus elongatus calculated at 4-Å resolution for the first time reveals a second phylloquinone molecule and thereby completes the set of cofactors constituting the electron transfer system of this iron-sulfur type photosynthetic reaction center: six chlorophyll a, two phylloquinones, and three Fe4S4 clusters. The location of the newly identified phylloquinone pair, the individual plane orientations of these molecules, and the resulting distances to other cofactors of the electron transfer system are discussed and compared with those determined by magnetic resonance techniques.
UR - http://www.scopus.com/inward/record.url?scp=0033548273&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033548273&partnerID=8YFLogxK
U2 - 10.1074/jbc.274.11.7361
DO - 10.1074/jbc.274.11.7361
M3 - Article
C2 - 10066800
AN - SCOPUS:0033548273
SN - 0021-9258
VL - 274
SP - 7361
EP - 7367
JO - Journal of Biological Chemistry
JF - Journal of Biological Chemistry
IS - 11
ER -