3IAN

Crystal structure of a chitinase from Lactococcus lactis subsp. lactis

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Chitinase	polymer	321	35919.8	1	UniProt (Q9CE95) Pfam (PF00704)	Lactococcus lactis subsp. lactis (Streptococcus lactis)
2	B (A)	SODIUM ION	non-polymer		23.0	1	Chemie (NA)
3	C, D, E, F, G... (A)	1,2-ETHANEDIOL	non-polymer		62.1	10	Chemie (EDO)
4	M (A)	water	water		18.0	258	Chemie (HOH)

Sequence modifications

A: 42 - 351 (UniProt: Q9CE95)

PDB	External Database	Details
Met 39	-	expression tag
Ser 40	-	expression tag
Leu 41	-	expression tag
Val 149	Ile 149	engineered mutation
Thr 268	Ser 268	engineered mutation
Glu 352	-	expression tag
Gly 353	-	expression tag
His 354	-	expression tag
His 355	-	expression tag
His 356	-	expression tag
His 357	-	expression tag
His 358	-	expression tag
His 359	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	35919.8
Non-Polymers*	Number of molecules	11
	Total formula weight	643.7
All*	Total formula weight	36563.4

*Water molecules are not included.