4QI1

Crystal structure of H. walsbyi bacteriorhodopsin

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C (A, B, C)	Bacteriorhodopsin-I	polymer	262	28490.1	3	UniProt (Q18DH8) Pfam (PF01036)	Haloquadratum walsbyi	HwBR, Squarebop I
2	D, I, O (A, B, C)	RETINAL	non-polymer		284.4	3	Chemie (RET) PubChem (1070) PubChem (23254473) PubChem (177675058) PubChem (638015) PubChem (87082476) PubChem (87110449) PubChem (87110609) PubChem (88398773) PubChem (88407543) PubChem (5280490) PubChem (5353924) PubChem (5381765) PubChem (6436079) PubChem (6436082) PubChem (11426127) PubChem (12227253) PubChem (12227254) PubChem (12227256) PubChem (12227257) PubChem (12227258) PubChem (12227259) PubChem (12227269) PubChem (12227270) PubChem (12227271) PubChem (134688327) PubChem (140510408) PubChem (145826762) PubChem (169423542) PubChem (172878320)
3	E, F, G, J, K... (A, B, C)	[(Z)-octadec-9-enyl] (2R)-2,3-bis(oxidanyl)propanoate	non-polymer		356.5	9	Chemie (MPG) PubChem (17754086) PubChem (44201365) PubChem (46936801) PubChem (56987534) PubChem (5168638) PubChem (6289863) PubChem (11681934)
4	H (A)	GLYCEROL	non-polymer		92.1	1	Chemie (GOL) PubChem (753)
5	Q, R, S (A, B, C)	water	water		18.0	718	Chemie (HOH)

Sequence modifications

A, B, C: 3 - 254 (UniProt: Q18DH8)

PDB	External Database	Details
Met 1	-	expression tag
Ala 2	-	expression tag
Leu 255	-	expression tag
Glu 256	-	expression tag
His 257	-	expression tag
His 258	-	expression tag
His 259	-	expression tag
His 260	-	expression tag
His 261	-	expression tag
His 262	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	85470.3
Non-Polymers*	Number of molecules	13
	Total formula weight	4154.3
All*	Total formula weight	89624.5

*Water molecules are not included.