1OK9

Decay accelerating factor (CD55): The structure of an intact human complement regulator.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	COMPLEMENT DECAY-ACCELERATING FACTOR	polymer	254	28174.7	2	UniProt (P08174) Pfam (PF00084)	HOMO SAPIENS (HUMAN)	DAF, CR, CD55
2	C, D, I, J (A, B)	ACETATE ION	non-polymer		59.0	4	Chemie (ACT)
3	E, K (A, B)	PLATINUM (II) ION	non-polymer		195.1	2	Chemie (PT)
4	F, G, L, M (A, B)	CHLORIDE ION	non-polymer		35.5	4	Chemie (CL)
5	H, N (A, B)	SULFATE ION	non-polymer		96.1	2	Chemie (SO4)
6	O, P (B)	GLYCEROL	non-polymer		92.1	2	Chemie (GOL)
7	Q, R (A, B)	water	water		18.0	9	Chemie (HOH)

Sequence modifications

A, B: 1 - 2 (PDB: 1OK9)
A, B: 254 - 254 (PDB: 1OK9)
A, B: 3 - 253 (UniProt: P08174)

PDB	External Database	Details
Ile 48	Thr 80	conflict

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	56349.3
Non-Polymers*	Number of molecules	14
	Total formula weight	1144.5
All*	Total formula weight	57493.8

*Water molecules are not included.