7QHA

Cryo-EM structure of the Tripartite ATP-independent Periplasmic (TRAP) transporter SiaQM from Photobacterium profundum in amphipol

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Putative TRAP-type C4-dicarboxylate transport system, small permease component	polymer	170	19748.4	1	UniProt (Q6LPW0) Pfam (PF04290)	Photobacterium profundum SS9
2	B (B)	Putative TRAP-type C4-dicarboxylate transport system, large permease component	polymer	427	45573.6	1	UniProt (Q6LPW1) Pfam (PF06808)	Photobacterium profundum SS9
3	C (C)	Megabody c7HopQ	polymer	510	54867.1	1	UniProt (B5Z8H1) Pfam (PF18304)	Helicobacter pylori
4	D, E (B)	SODIUM ION	non-polymer		23.0	2	Chemie (NA)

Sequence modifications

A: 1 - 169 (UniProt: Q6LPW0)

PDB	External Database	Details
Glu 170	-	expression tag

C: -377 - -157 (UniProt: B5Z8H1)

PDB	External Database	Details
Gln -389	-	expression tag
Val -388	-	expression tag
Gln -387	-	expression tag
Leu -386	-	expression tag
Gln -385	-	expression tag
Glu -384	-	expression tag
Ser -383	-	expression tag
Gly -382	-	expression tag
Gly -381	-	expression tag
Gly -380	-	expression tag
Leu -379	-	expression tag
Val -378	-	expression tag

C: -156 - 120 (PDB: 7QHA)

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	120189.1
Non-Polymers*	Number of molecules	2
	Total formula weight	46.0
All*	Total formula weight	120235.1

*Water molecules are not included.