1IW9

Crystal Structure of the M Intermediate of Bacteriorhodopsin

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	bacteriorhodopsin	polymer	248	26814.4	1	UniProt (P02945) Pfam (PF01036)	Halobacterium salinarum
2	B (B)	beta-D-galactopyranose-(1-6)-alpha-D-mannopyranose-(1-2)-alpha-D-glucopyranose	branched		504.4	1	In PDB GlyTouCan (G59827MO)
3	C (A)	RETINAL	non-polymer		284.4	1	Chemie (RET) PubChem (1070) PubChem (23254473) PubChem (177675058) PubChem (638015) PubChem (5353924) PubChem (6436079) PubChem (6436082) PubChem (87082476) PubChem (87110449) PubChem (87110609) PubChem (88398773) PubChem (88407543) PubChem (11426127) PubChem (12227253) PubChem (12227254) PubChem (12227256) PubChem (12227257) PubChem (12227258) PubChem (12227259) PubChem (12227269) PubChem (12227270) PubChem (12227271) PubChem (5280490) PubChem (5381765) PubChem (134688327) PubChem (140510408) PubChem (145826762) PubChem (169423542) PubChem (172878320)
4	D, F, G, H (A)	2,3-DI-O-PHYTANLY-3-SN-GLYCERO-1-PHOSPHORYL-3'-SN-GLYCEROL-1'-PHOSPHATE	non-polymer		885.2	4	Chemie (L3P) PubChem (17754059) PubChem (46936336) PubChem (5288684)
5	E (A)	2,3-DI-PHYTANYL-GLYCEROL	non-polymer		653.2	1	Chemie (L2P) PubChem (17754058) PubChem (417493) PubChem (446373) PubChem (46936742) PubChem (53932567) PubChem (5287700) PubChem (87094554) PubChem (88663197) PubChem (88663201) PubChem (11017738) PubChem (87572051) PubChem (12905061) PubChem (12905054) PubChem (162951859) PubChem (166638144) PubChem (168974727) PubChem (166638149) PubChem (169744378)
6	I (A)	water	water		18.0	25	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	26814.4
Branched	Number of molecules	1
	Total formula weight	504.4
Non-Polymers*	Number of molecules	6
	Total formula weight	4478.3
All*	Total formula weight	31797.2

*Water molecules are not included.