31XJ

Disulfide linked complex of T. ramosa IgA peptidase (IgAse2-4) with human IgA2 Fab' in precatalytic conformation

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (E)	IgA protease	polymer	559	63825.8	1	UniProt (Q9AES2)	Thomasclavelia ramosa
2	B (H)	IgA2(m1) Immunoglobulin Heavy Alpha Chain domains 1 and 2 including the hinge region (Q1-P226).	polymer	238	25768.5	1		Homo sapiens
3	C (L)	IgA Immunoglobulin Lambda Light Chain domains 1 and 2 (S2-T214)	polymer	217	22786.1	1		Homo sapiens
4	D, E (E)	ZINC ION	non-polymer		65.4	2	Chemie (ZN) PubChem (32051)
5	F, G (E, H)	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL	non-polymer		122.1	2	Chemie (TRS) PubChem (3777159)
6	H, I, J (H, L)	CHLORIDE ION	non-polymer		35.5	3	Chemie (CL) PubChem (312)
7	K, L, M (E, H, L)	water	water		18.0	176	Chemie (HOH)

Sequence modifications

E: 328 - 876 (UniProt: Q9AES2)

PDB	External Database	Details
Met 326	-	initiating methionine
Gly 327	-	expression tag
Ser 414	Cys 414	engineered mutation
Cys 434	Asp 434	engineered mutation
Ser 476	Cys 476	engineered mutation
Ala 540	Glu 540	engineered mutation
Ser 591	Cys 591	engineered mutation
Leu 877	-	expression tag
Glu 878	-	expression tag
His 879	-	expression tag
His 880	-	expression tag
His 881	-	expression tag
His 882	-	expression tag
His 883	-	expression tag
His 884	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	112380.4
Non-Polymers*	Number of molecules	7
	Total formula weight	481.5
All*	Total formula weight	112861.9

*Water molecules are not included.