6PNJ

Structure of Photosystem I Acclimated to Far-red Light

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, G, a	Photosystem I P700 chlorophyll a apoprotein A1	polymer	788	87627.9	3	UniProt (G6FME9) Pfam (PF00223) In PDB	Fischerella thermalis PCC 7521	PsaA, photosystem I core protein PsaA
2	B, H, b	Photosystem I P700 chlorophyll a apoprotein A2	polymer	741	83451.0	3	UniProt (A0A2N6KXB6) Pfam (PF00223) UniProt (by SIFTS) (G6FMF0) In PDB	Fischerella thermalis PCC 7521	PsaB, photosystem I core protein PsaB
3	C, N, c	Photosystem I iron-sulfur center	polymer	81	8853.2	3	UniProt (G6FW50) Pfam (PF12838) In PDB	Fischerella thermalis PCC 7521	PSI-C, Photosystem I subunit VII, PsaC
4	D, O, d	Photosystem I protein PsaD	polymer	159	17776.3	3	UniProt (G6FW99) Pfam (PF02531) In PDB	Fischerella thermalis PCC 7521
5	E, P, e	Photosystem I reaction center subunit IV	polymer	72	8070.1	3	UniProt (G6FQU3) Pfam (PF02427) In PDB	Fischerella thermalis PCC 7521
6	F, Q, f	Photosystem I reaction center protein PsaF subunit III	polymer	159	17788.0	3	UniProt (G6FMD3) Pfam (PF02507) In PDB	Fischerella thermalis PCC 7521
7	I, R, i	photosystem I subunit VIII	polymer	67	7736.0	3	UniProt (A0A2N6MR25) In PDB	Fischerella thermalis PCC 7521
8	J, S, j	Photosystem I reaction centre subunit IX / PsaJ	polymer	48	5435.5	3	UniProt (G6FMD2) Pfam (PF01701) In PDB	Fischerella thermalis PCC 7521
9	K, T, k	photosystem I reaction center subunit PsaK	polymer	39	3615.4	3	UniProt (G6FV28) Pfam (PF01241) In PDB	Fischerella thermalis PCC 7521
10	L, U, l	Photosystem I reaction center protein subunit XI	polymer	174	18543.2	3	UniProt (A0A2N6M3Z9) Pfam (PF02605) UniProt (by SIFTS) (G6FMF1) In PDB	Fischerella thermalis PCC 7521
11	M, V, m	Photosystem I reaction center subunit XII	polymer	31	3471.1	3	UniProt (G6FWT6) Pfam (PF07465) In PDB	Fischerella thermalis PCC 7521	PSI-M
12	W, X, x	Photosystem one PsaX	polymer	101	11132.8	3	UniProt (G6FSH2) Pfam (PF08078) In PDB	Fischerella thermalis PCC 7521
13	A, G, a	CHLOROPHYLL A ISOMER	non-polymer		893.5	3	Chemie (CL0)
14	A, B, G, H, a...	CHLOROPHYLL A	non-polymer		893.5	252	Chemie (CLA)
15	A, H, b, G, B...	Chlorophyll F	non-polymer		905.5	12	Chemie (F6C)
16	A, B, G, H, a...	PHYLLOQUINONE	non-polymer		450.7	6	Chemie (PQN)
17	A, c, G, N, C...	IRON/SULFUR CLUSTER	non-polymer		351.6	9	Chemie (SF4)
18	b, A, B, L, i...	BETA-CAROTENE	non-polymer		536.9	63	Chemie (BCR)
19	b, A, B, G, H...	1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE	non-polymer		723.0	6	Chemie (LHG)
20	b, L, i, A, R...	1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE	non-polymer		787.2	12	Chemie (LMG)
21	A, G, a	DODECYL-BETA-D-MALTOSIDE	non-polymer		510.6	6	Chemie (LMT)
22	L, l, U	CALCIUM ION	non-polymer		40.1	3	Chemie (CA)

Sequence modifications

I, R, i: 2 - 67 (UniProt: A0A2N6MR25)

PDB	External Database	Details
Met 1	-	initiating methionine

K, T, k: 29 - 44 (PDB: 6PNJ)
K, T, k: 69 - 91 (UniProt: G6FV28)

Contents of the asymmetric unit

Polymers	Number of chains	36
	Total formula weight	820501.9
Non-Polymers*	Number of molecules	372
	Total formula weight	295364.8
All*	Total formula weight	1115866.7

*Water molecules are not included.