6KIF

Structure of cyanobacterial photosystem I-IsiA-flavodoxin supercomplex

This is a non-PDB format compatible entry.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, G, e	Photosystem I P700 chlorophyll a apoprotein A1	polymer	763	83994.3	3	UniProt (Q31LJ0) Pfam (PF00223) In PDB	Synechococcus elongatus (strain PCC 7942)	PsaA
2	B, H, f	Photosystem I P700 chlorophyll a apoprotein A2	polymer	734	81554.7	3	UniProt (Q31LJ1) Pfam (PF00223) In PDB	Synechococcus elongatus (strain PCC 7942)	PsaB
3	C, N, g	Photosystem I iron-sulfur center	polymer	81	8807.2	3	UniProt (Q31QV2) Pfam (PF12838) In PDB	Synechococcus elongatus (strain PCC 7942)	PsaC, 9 kDa polypeptide,PSI-C,Photosystem I subunit VII
4	D, O, h	Photosystem I reaction center subunit II	polymer	141	15536.6	3	UniProt (Q31PI7) Pfam (PF02531) In PDB	Synechococcus elongatus (strain PCC 7942)	PsaD
5	E, Q, i	Photosystem I reaction center subunit IV	polymer	75	8147.1	3	UniProt (Q31NL7) Pfam (PF02427) In PDB	Synechococcus elongatus (strain PCC 7942)	PsaE
6	F, R, j	Photosystem I reaction center subunit III	polymer	159	17125.7	3	UniProt (Q31NT9) Pfam (PF02507) In PDB	Synechococcus elongatus (strain PCC 7942)	PsaF
7	I, S, k	Photosystem I PsaI protein	polymer	38	4002.7	3	UniProt (P95823) Pfam (PF00796) In PDB	Synechococcus elongatus (strain PCC 7942)	PsaI, Photosystem I subunit VIII
8	J, T, l	Photosystem I reaction center subunit IX	polymer	41	4713.6	3	UniProt (Q31NU0) Pfam (PF01701) In PDB	Synechococcus elongatus (strain PCC 7942)	PsaJ
9	K, U, m	Photosystem I reaction center subunit PsaK	polymer	84	8397.1	3	UniProt (Q31PR9) Pfam (PF01241) In PDB	Synechococcus elongatus (strain PCC 7942)	PsaK, Photosystem I subunit X
10	L, V, n	Photosystem I reaction center subunit XI	polymer	166	17302.7	3	UniProt (P95822) Pfam (PF02605) In PDB	Synechococcus elongatus (strain PCC 7942)	PsaL, PSI subunit V,PSI-L
11	M, W, o	PsaM	polymer	29	3239.9	3		Synechococcus elongatus (strain PCC 7942)
12	P, X, p	Flavodoxin	polymer	172	18938.6	3	UniProt (P10340) Pfam (PF00258) In PDB	Synechococcus elongatus (strain PCC 7942)
13	1, 2, 3, 4, 5...	Iron stress-induced chlorophyll-binding protein	polymer	342	37004.5	18	UniProt (P15347) Pfam (PF00421) In PDB	Synechococcus elongatus (strain PCC 7942)	IsiA, iron stress-induced protein A, CP43'
14	f, A, n, q, B...	CHLOROPHYLL A	non-polymer		893.5	594	Chemie (CLA)
15	B, e, G, f, A...	PHYLLOQUINONE	non-polymer		450.7	6	Chemie (PQN)
16	g, N, e, C, G...	IRON/SULFUR CLUSTER	non-polymer		351.6	9	Chemie (SF4)
17	f, A, r, J, 4...	BETA-CAROTENE	non-polymer		536.9	144	Chemie (BCR)
18	G, e, f, A, n...	1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE	non-polymer		723.0	45	Chemie (LHG)
19	e, f, J, G, H...	DODECYL-ALPHA-D-MALTOSIDE	non-polymer		510.6	12	Chemie (LMU)
20	f, J, H, B, l...	1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE	non-polymer		787.2	6	Chemie (LMG)
21	5, r, a, f, 4...	1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL	non-polymer		795.1	24	Chemie (SQD)
22	p, X, P	FLAVIN MONONUCLEOTIDE	non-polymer		456.3	3	Chemie (FMN)
23		water	water		18.0	54	Chemie (HOH)

Sequence modifications

P, X, p: 1 - 169 (UniProt: P10340)

PDB	External Database	Details
Gly -2	-	expression tag
Ser -1	-	expression tag
His 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	54
	Total formula weight	1481361.2
Non-Polymers*	Number of molecules	843
	Total formula weight	677746.9
All*	Total formula weight	2159108.1

*Water molecules are not included.