1RZZ

PHOTOSYNTHETIC REACTION CENTER DOUBLE MUTANT FROM RHODOBACTER SPHAEROIDES WITH ASP L213 REPLACED WITH ASN AND ARG M233 REPLACED WITH CYS IN THE CHARGE-NEUTRAL DQAQB STATE (TETRAGONAL FORM)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, D (L, R)	Reaction center protein L chain	polymer	281	31345.4	2	UniProt (P02954) Pfam (PF00124) UniProt (by SIFTS) (P0C0Y8)	Rhodobacter sphaeroides	Photosynthetic reaction center L subunit
2	B, E (M, S)	Reaction center protein M chain	polymer	307	34344.5	2	UniProt (P02953) Pfam (PF00124) UniProt (by SIFTS) (P0C0Y9)	Rhodobacter sphaeroides	Photosynthetic reaction center M subunit
3	C, F (H, T)	Reaction center protein H chain	polymer	260	28066.3	2	UniProt (P11846) Pfam (PF03967) Pfam (PF05239) UniProt (by SIFTS) (P0C0Y7)	Rhodobacter sphaeroides	Photosynthetic reaction center H subunit
4	AA, G, H, I, L... (S, L, M, R)	BACTERIOCHLOROPHYLL A	non-polymer		911.5	8	Chemie (BCL)
5	CA, J, O, W (S, L, M, R)	UBIQUINONE-10	non-polymer		863.3	4	Chemie (U10)
6	K, X (M, S)	FE (II) ION	non-polymer		55.8	2	Chemie (FE2)
7	BA, M, N, V (S, M, R)	BACTERIOPHEOPHYTIN A	non-polymer		889.2	4	Chemie (BPH)
8	DA, P (S, M)	SPHEROIDENE	non-polymer		568.9	2	Chemie (SPO)
9	EA, Q, R, S, T (S, M)	LAURYL DIMETHYLAMINE-N-OXIDE	non-polymer		229.4	5	Chemie (LDA)
10	FA, GA, HA, IA, JA... (L, M, H, R, S...)	water	water		18.0	473	Chemie (HOH)

Sequence modifications

L, R: 1 - 281 (UniProt: P02954)

PDB	External Database	Details
Asn 213	Asp 213	engineered mutation

M, S: 1 - 307 (UniProt: P02953)

PDB	External Database	Details
Cys 233	Arg 233	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	187512.4
Non-Polymers*	Number of molecules	25
	Total formula weight	16698.8
All*	Total formula weight	204211.2

*Water molecules are not included.