1QEX

BACTERIOPHAGE T4 GENE PRODUCT 9 (GP9), THE TRIGGER OF TAIL CONTRACTION AND THE LONG TAIL FIBERS CONNECTOR

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	PROTEIN (BACTERIOPHAGE T4 GENE PRODUCT 9 (GP9))	polymer	288	31024.7	2	UniProt (P10927) Pfam (PF07880) In PDB	Enterobacteria phage T4
2	A, B	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID	non-polymer		238.3	2	Chemie (EPE)
3		water	water		18.0	292	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	62049.4
Non-Polymers*	Number of molecules	2
	Total formula weight	476.6
All*	Total formula weight	62526.1

*Water molecules are not included.