3IPM

Crystal Structure of Archaeal 20S Proteasome in Complex with the C-terminus of PAN

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... (A, B, C, D, E...)	Proteasome subunit alpha	polymer	233	25829.4	7	UniProt (P25156) Pfam (PF10584) Pfam (PF00227)	Thermoplasma acidophilum	20S proteasome alpha subunit,Proteasome core protein PsmA
2	H, I, J, K, L... (H, I, J, K, L...)	Proteasome subunit beta	polymer	217	23998.7	7	UniProt (P28061) Pfam (PF00227)	Thermoplasma acidophilum	20S proteasome beta subunit,Proteasome core protein PsmB
3	O, P, Q, R, S... (O, P, Q, R, S...)	Proteasome activator PA26, Proteasome-activating nucleotidase fusion protein	polymer	239	26328.0	7	UniProt (Q38BM8) UniProt (Q58576) Pfam (PF02252)	Trypanosoma brucei brucei

Sequence modifications

H, I, J, K, L, M, N: -7 - 203 (UniProt: P28061)

PDB	External Database	Details
His 204	-	expression tag
His 205	-	expression tag
His 206	-	expression tag
His 207	-	expression tag
His 208	-	expression tag
His 209	-	expression tag

O, P, Q, R, S, T, U: 2 - 223 (UniProt: Q38BM8)

PDB	External Database	Details
Met -6	-	initiating methionine
Ala -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag
His 1	-	expression tag
Ala 102	Glu 102	engineered mutation
Gly 224	-	linker
Gly 225	-	linker

O, P, Q, R, S, T, U: 226 - 232 (UniProt: Q58576)

Contents of the asymmetric unit

Polymers	Number of chains	21
	Total formula weight	533092.9
All*	Total formula weight	533092.9

*Water molecules are not included.