3H09

The structure of Haemophilus influenzae IgA1 protease

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Immunoglobulin A1 protease	polymer	989	108802.3	2	UniProt (P44969) Pfam (PF02395) Pfam (PF03212) In PDB	Haemophilus influenzae	IGA1 protease
2	A, B	ACETATE ION	non-polymer		59.0	4	Chemie (ACT)
3	A, B	MALONIC ACID	non-polymer		104.1	5	Chemie (MLA)
4	A, B	SODIUM ION	non-polymer		23.0	4	Chemie (NA)
5		water	water		18.0	1812	Chemie (HOH)

Sequence modifications

A, B: 26 - 1014 (UniProt: P44969)

PDB	External Database	Details
His 1007	Asn 1007	engineered mutation
His 1008	Asn 1008	engineered mutation
His 1009	Ile 1009	engineered mutation
His 1010	Gln 1010	engineered mutation
His 1011	Ala 1011	engineered mutation
His 1012	Asp 1012	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	217604.7
Non-Polymers*	Number of molecules	13
	Total formula weight	848.4
All*	Total formula weight	218453.1

*Water molecules are not included.