3U25

Crystal structure of P. aeruginoas azurin containing a Tyr-His hydrogen bonded pair

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Azurin	polymer	127	13860.7	2	UniProt (P00282) Pfam (PF00127)	Pseudomonas aeruginosa
2	C, E (A, B)	COPPER (II) ION	non-polymer		63.5	2	Chemie (CU)
3	D, F (A, B)	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		122.1	2	Chemie (TRS)
4	G, H (A, B)	water	water		18.0	220	Chemie (HOH)

Sequence modifications

A, B: 2 - 128 (UniProt: P00282)

PDB	External Database	Details
His 20	Ile 40	engineered mutation
Tyr 48	Trp 68	engineered mutation
Phe 72	Tyr 92	engineered mutation
Phe 108	Tyr 128	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	27721.3
Non-Polymers*	Number of molecules	4
	Total formula weight	371.4
All*	Total formula weight	28092.7

*Water molecules are not included.