1S5L

Architecture of the photosynthetic oxygen evolving center

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, T (A, a)	Photosystem Q(B) protein	polymer	344	38265.6	2	UniProt (P0A444) Pfam (PF00124)	Thermosynechococcus elongatus	32 kDa thylakoid membrane protein, Photosystem II protein D1
2	B, U (B, b)	photosystem II core light harvesting protein	polymer	510	56656.5	2	UniProt (Q8DIQ1) Pfam (PF00421)	Thermosynechococcus elongatus
3	C, V (C, c)	photosystem II CP43 protein	polymer	473	51666.1	2	UniProt (Q8DIF8) Pfam (PF00421)	Thermosynechococcus elongatus
4	D, W (D, d)	photosystem II reaction center D2 protein	polymer	352	39388.2	2	UniProt (Q8CM25) Pfam (PF00124)	Thermosynechococcus elongatus
5	E, X (E, e)	Cytochrome b559 alpha subunit	polymer	84	9580.8	2	UniProt (Q8DIP0) Pfam (PF00283) Pfam (PF00284)	Thermosynechococcus elongatus	PSII reaction center subunit V
6	F, Y (F, f)	Cytochrome b559 beta subunit	polymer	45	5067.9	2	UniProt (Q8DIN9) Pfam (PF00283)	Thermosynechococcus elongatus	PSII reaction center subunit VI
7	G, Z (H, h)	photosystem II PsbH protein	polymer	66	7358.8	2	UniProt (Q8DJ43) Pfam (PF00737)	Thermosynechococcus elongatus
8	AA, H (I, i)	Photosystem II reaction center I protein	polymer	38	4410.2	2	UniProt (Q8DJZ6) Pfam (PF02532)	Thermosynechococcus elongatus	PSII 4.4 kDa protein
9	BA, I (J, j)	Photosystem II reaction center J protein	polymer	40	4105.9	2	UniProt (P59087) Pfam (PF01788)	Thermosynechococcus elongatus
10	CA, J (K, k)	Photosystem II reaction center protein K	polymer	37	4101.9	2	UniProt (Q9F1K9) Pfam (PF02533)	Thermosynechococcus elongatus	PSII-K
11	DA, K (L, l)	Photosystem II reaction center L protein	polymer	37	4299.0	2	UniProt (Q8DIN8) Pfam (PF02419)	Thermosynechococcus elongatus	PSII 5 kDa protein
12	EA, L (M, m)	Photosystem II reaction center M protein	polymer	36	3981.7	2	UniProt (Q8DHA7) Pfam (PF05151)	Thermosynechococcus elongatus	PSII-M
13	FA, M (O, o)	Photosystem II manganese-stabilizing polypeptide	polymer	246	26852.0	2	UniProt (P0A431) Pfam (PF01716)	Thermosynechococcus elongatus	MSP
14	GA, N (T, t)	photosystem II PsbT protein	polymer	32	3878.7	2	UniProt (Q8DIQ0) Pfam (PF01405)	Thermosynechococcus elongatus
15	HA, O (U, u)	Photosystem II 12 kDa extrinsic protein	polymer	134	15031.0	2	UniProt (Q9F1L5) Pfam (PF06514)	Thermosynechococcus elongatus	PS II complex 12 kDa extrinsic protein, PSII-U
16	IA, P (V, v)	Cytochrome c-550	polymer	137	15148.3	2	UniProt (P0A386) Pfam (PF14495)	Thermosynechococcus elongatus	C550, Low potential cytochrome c
17	JA, Q (X, x)	photosystem II PsbX protein	polymer	50	5235.3	2	UniProt (Q9F1R6) Pfam (PF06596)	Thermosynechococcus elongatus
18	KA, R (N, n)	Photosystem II PsbN protein	polymer	37	3166.9	2		Thermosynechococcus elongatus
19	LA, S (Z, z)	Photosystem II reaction center Z protein	polymer	62	6766.2	2	UniProt (Q8DHJ2) Pfam (PF01737)	Thermosynechococcus elongatus	photosystem II PsbZ protein
20	MA, OC (A, a)	FE (III) ION	non-polymer		55.8	2	Chemie (FE)
21	EC, EE, NA, PC (D, d, A, a)	BICARBONATE ION	non-polymer		61.0	4	Chemie (BCT)
22	OA, QC (A, a)	OXYGEN EVOLVING SYSTEM	non-polymer		323.8	2	Chemie (OEC)
23	AB, AC, AD, AE, BB... (B, C, b, c, D...)	CHLOROPHYLL A	non-polymer		893.5	72	Chemie (CLA)
24	GC, HE, SA, TC (D, d, A, a)	PHEOPHYTIN A	non-polymer		871.2	4	Chemie (PHO)
25	IC, JE, UA, VC (D, d, A, a)	2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE	non-polymer		749.2	4	Chemie (PL9)
26	KB, KE (B, d)	DODECYL-BETA-D-MALTOSIDE	non-polymer		510.6	2	Chemie (LMT)
27	CC, CE, DC, DE, KC... (C, c, F, J, d...)	BETA-CAROTENE	non-polymer		536.9	14	Chemie (BCR)
28	JC, ME, NC, PE (E, e, V, v)	HEME C	non-polymer		618.5	4	Chemie (HEC)

Sequence modifications

C, c: 14 - 473 (UniProt: Q8DIF8)

PDB	External Database	Details
Met 1	-	insertion
Lys 2	-	insertion
Thr 3	-	insertion
Leu 4	-	insertion
Ser 5	-	insertion
Ser 6	-	insertion
Gln 7	-	insertion
Lys 8	-	insertion
Arg 9	-	insertion
Tyr 10	-	insertion
Ser 11	-	insertion
Pro 12	-	insertion
Val 13	-	insertion

X, x: 11 - 50 (UniProt: Q9F1R6)

PDB	External Database	Details
Met 1	-	insertion
Ile 2	-	insertion
Gln 3	-	insertion
Ser 4	-	insertion
Ala 5	-	insertion
Ser 6	-	insertion
Ser 7	-	insertion
Leu 8	-	insertion
Leu 9	-	insertion
Leu 10	-	insertion

Contents of the asymmetric unit

Polymers	Number of chains	38
	Total formula weight	609921.8
Non-Polymers*	Number of molecules	108
	Total formula weight	82827.7
All*	Total formula weight	692749.5

*Water molecules are not included.