5KKH

2.1-Angstrom In situ Mylar structure of bacteriorhodopsin from Haloquadratum walsbyi (HwBR) at 100 K

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	Bacteriorhodopsin-I	polymer	268	29116.8	3	UniProt (Q18DH8) Pfam (PF01036) In PDB	Haloquadratum walsbyi (strain DSM 16790 / HBSQ001)	HwBR,Squarebop I
2	A, B, C	(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate	non-polymer		356.5	6	Chemie (OLC)
3	A, B, C	(2S)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate	non-polymer		356.5	3	Chemie (OLB)
4	A, B, C	RETINAL	non-polymer		284.4	3	Chemie (RET)
5		water	water		18.0	84	Chemie (HOH)

Sequence modifications

A, B, C: 1 - 254 (UniProt: Q18DH8)

PDB	External Database	Details
Leu 255	-	expression tag
Val 256	-	expression tag
Pro 257	-	expression tag
Arg 258	-	expression tag
Gly 259	-	expression tag
Ser 260	-	expression tag
Leu 261	-	expression tag
Glu 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	87350.4
Non-Polymers*	Number of molecules	12
	Total formula weight	4062.2
All*	Total formula weight	91412.6

*Water molecules are not included.