1FQK

CRYSTAL STRUCTURE OF THE HETERODIMERIC COMPLEX OF THE RGS DOMAIN OF RGS9, AND THE GT/I1 CHIMERA ALPHA SUBUNIT [(RGS9)-(GT/I1ALPHA)-(GDP)-(ALF4-)-(MG2+)]

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	Guanine nucleotide-binding protein G(t) subunit alpha-1,Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(t) subunit alpha-1	polymer	325	37361.7	2	UniProt (P04695) UniProt (P10824) Pfam (PF00503) In PDB	Bos taurus (Bovine)	Transducin alpha-1 chain,Adenylate cyclase-inhibiting G alpha protein,Transducin alpha-1 chain
2	B, D	Regulator of G-protein signaling 9	polymer	147	17419.2	2	UniProt (O46469) Pfam (PF00615) In PDB	Bos taurus (Bovine)	RGS9
3	A, C	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4	A, C	TETRAFLUOROALUMINATE ION	non-polymer		103.0	2	Chemie (ALF)
5	A, C	GUANOSINE-5'-DIPHOSPHATE	non-polymer		443.2	2	Chemie (GDP)
6		water	water		18.0	116	Chemie (HOH)

Sequence modifications

A, C: 26 - 215 (UniProt: P04695)
A, C: 216 - 294 (UniProt: P10824)
A, C: 295 - 350 (UniProt: P04695)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	109561.7
Non-Polymers*	Number of molecules	6
	Total formula weight	1141.0
All*	Total formula weight	110702.6

*Water molecules are not included.