National Center for
Biotechnology Information

9AU4: Cryo-EM structure of a photosystem I variant containing an unusual plastoquinone derivative in its electron transfer chain

Biological Unit for 9AU4: 33-meric; determined by author and by software

Molecular Components in 9AU4
Label	Count	Molecule
Proteins (33 molecules)
G a A	3	Photosystem I P700 Chlorophyll a Apoprotein A1
H b B	3	Photosystem I P700 Chlorophyll a Apoprotein A2
N c C	3	Photosystem I Iron-sulfur Center
O d D	3	Photosystem I Reaction Center Subunit II
P e E	3	Photosystem I Reaction Center Subunit IV
Q f F	3	Photosystem I Reaction Center Subunit III
R i I	3	Photosystem I Reaction Center Subunit Viii
S j J	3	Photosystem I Reaction Center Subunit IX
T k K	3	Photosystem I Reaction Center Subunit Psak 2
U l L	3	Photosystem I Reaction Center Subunit XI
V m M	3	Photosystem I Reaction Center Subunit XII
Chemicals and Non-standard biopolymers (402 molecules)
1	282	CHLOROPHYLL A
2	6	CHLOROPHYLL A
3	9	IRON/SULFUR CLUSTER
4	45	BETA-CAROTENE
5	12	1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE
6	9	1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE
7	3	beta,beta-carotene-4,4'-dione
8	3	CHLORIDE ION
9	6	beta,beta-caroten-4-one
10	6	CALCIUM ION
11	3	(3'R)-3'-hydroxy-beta,beta-caroten-4-one
12	6	(1R,2S)-4-{(1E,3E,5E,7E,9E,11E,13E,15E,17E)-18-[(4S)-4-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl]-3,7,12,16-tetramethyloctadeca-1,3,5,7,9,11,13,15,17-nonaen-1-yl}-2,5,5-trimethylcyclohex-3-en-1-ol
13	6	1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL
14	3	DIGALACTOSYL DIACYL GLYCEROL (DGDG)
15	3	DODECYL-BETA-D-MALTOSIDE