7XTA

Serotonin 4 (5-HT4) receptor-Gi-scFv16 complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Guanine nucleotide-binding protein G(i) subunit alpha-1	polymer	354	40414.0	1	UniProt (P63096) Pfam (PF00503) In PDB	Homo sapiens (human)	Adenylate cyclase-inhibiting G alpha protein
2	B	Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1	polymer	345	37915.5	1	UniProt (P62873) Pfam (PF00400) In PDB	Homo sapiens (human)	Transducin beta chain 1
3	E	scFv16	polymer	249	26597.7	1		Mus musculus
4	G	Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2	polymer	71	7861.1	1	UniProt (P59768) Pfam (PF00631) In PDB	Homo sapiens (human)	G gamma-I
5	R	Soluble cytochrome b562,5-hydroxytryptamine receptor 4	polymer	527	59525.6	1	UniProt (P0ABE7) UniProt (Q13639) Pfam (PF07361) Pfam (PF00001) In PDB	Homo sapiens (human)	Cytochrome b-562,5-HT-4,5-HT4,Serotonin receptor 4
6	R	SEROTONIN	non-polymer		176.2	1	Chemie (SRO)

Sequence modifications

A: 1 - 354 (UniProt: P63096)

PDB	External Database	Details
Asn 47	Ser 47	conflict
Ala 203	Gly 203	conflict
Ala 245	Glu 245	conflict
Ser 326	Ala 326	conflict

B: 2 - 340 (UniProt: P62873)

PDB	External Database	Details
Met -4	-	initiating methionine
Gly -3	-	expression tag
Ser -2	-	expression tag
Leu -1	-	expression tag
Leu 0	-	expression tag
Gln 1	-	expression tag

R: -116 - -12 (UniProt: P0ABE7)

PDB	External Database	Details
Asp -139	-	expression tag
Tyr -138	-	expression tag
Lys -137	-	expression tag
Asp -136	-	expression tag
Asp -135	-	expression tag
Asp -134	-	expression tag
Asp -133	-	expression tag
Ala -132	-	expression tag
Lys -131	-	expression tag
Leu -130	-	expression tag
Gln -129	-	expression tag
Thr -128	-	expression tag
Met -127	-	expression tag
His -126	-	expression tag
His -125	-	expression tag
His -124	-	expression tag
His -123	-	expression tag
His -122	-	expression tag
His -121	-	expression tag
His -120	-	expression tag
His -119	-	expression tag
His -118	-	expression tag
His -117	-	expression tag
Trp -110	Met 29	conflict
Ile -15	His 124	conflict
Leu -11	-	linker
Ala -10	-	linker
Ser -9	-	linker
Glu -8	-	linker
Asn -7	-	linker
Leu -6	-	linker
Tyr -5	-	linker
Phe -4	-	linker
Gln -3	-	linker
Gly -2	-	linker
Gly -1	-	linker
Thr 0	-	linker

R: 1 - 387 (UniProt: Q13639)

Contents of the asymmetric unit

Polymers	Number of chains	5
	Total formula weight	172313.9
Non-Polymers*	Number of molecules	1
	Total formula weight	176.2
All*	Total formula weight	172490.1

*Water molecules are not included.