4XXJ

Crystal Structure of Escherichia coli-Expressed Halobacterium salinarum Bacteriorhodopsin in the Trimeric Form

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	polymer	269	29403.3	3	UniProt (P02945) Pfam (PF01036)	Halobacterium salinarum	BR,Bacterioopsin,BO
2	AA, BA, CA, D, DA... (C, A, B)	EICOSANE	non-polymer		282.5	33	Chemie (LFA)
3	MA, Q, Z (C, A, B)	[(Z)-octadec-9-enyl] (2R)-2,3-bis(oxidanyl)propanoate	non-polymer		356.5	3	Chemie (MPG)
4	NA, OA, PA (A, B, C)	water	water		18.0	90	Chemie (HOH)

Sequence modifications

A, B, C: 1 - 249 (UniProt: P02945)

PDB	External Database	Details
Met 0	-	initiating methionine
Gly 250	-	expression tag
Ser 251	-	expression tag
Gly 252	-	expression tag
Ile 253	-	expression tag
Glu 254	-	expression tag
Gly 255	-	expression tag
Arg 256	-	expression tag
Ser 257	-	expression tag
Gly 258	-	expression tag
Ala 259	-	expression tag
Pro 260	-	expression tag
His 261	-	expression tag
His 262	-	expression tag
His 263	-	expression tag
His 264	-	expression tag
His 265	-	expression tag
His 266	-	expression tag
His 267	-	expression tag
His 268	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	88209.9
Non-Polymers*	Number of molecules	36
	Total formula weight	10393.7
All*	Total formula weight	98603.6

*Water molecules are not included.