5JBL

Structure of the bacteriophage T4 capsid assembly protease, gp21.

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, D, E	Prohead core protein protease	polymer	231	25208.4	5	UniProt (P06807) Pfam (PF03420) In PDB	Enterobacteria phage T4	Protein Gp21
2		water	water		18.0	620	Chemie (HOH)

Sequence modifications

A, B, C, D, E: 1 - 212 (UniProt: P06807)

PDB	External Database	Details
Met -18	-	expression tag
Gly -17	-	expression tag
Ser -16	-	expression tag
Ser -15	-	expression tag
His -14	-	expression tag
His -13	-	expression tag
His -12	-	expression tag
His -11	-	expression tag
His -10	-	expression tag
His -9	-	expression tag
Ser -8	-	expression tag
Ser -7	-	expression tag
Gly -6	-	expression tag
Leu -5	-	expression tag
Val -4	-	expression tag
Pro -3	-	expression tag
Arg -2	-	expression tag
Gly -1	-	expression tag
Ser 0	-	expression tag
Leu 45	Met 45	engineered mutation
Ala 85	His 85	engineered mutation
Ala 140	Ser 140	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	5
	Total formula weight	126042.2
All*	Total formula weight	126042.2

*Water molecules are not included.