4ZJN

Crystal structure of the bacteriophage G20C portal protein

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)	Portal protein	polymer	426	47214.1	3	UniProt (A7XXR3) Pfam (PF21919)	Bacteriophage G20C
2	D, E, F (A, B, C)	(4S)-2-METHYL-2,4-PENTANEDIOL	non-polymer		118.2	3	Chemie (MPD)
3	G, H, I (A, B, C)	water	water		18.0	445	Chemie (HOH)

Sequence modifications

A, B, C: 21 - 438 (UniProt: A7XXR3)

PDB	External Database	Details
Met 13	-	initiating methionine
Gly 14	-	expression tag
His 15	-	expression tag
His 16	-	expression tag
His 17	-	expression tag
His 18	-	expression tag
His 19	-	expression tag
His 20	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	141642.3
Non-Polymers*	Number of molecules	3
	Total formula weight	354.5
All*	Total formula weight	141996.8

*Water molecules are not included.