5I7L

Crystal Structure of SPLUNC1 Disulfide Mutant M2 (A48C, V253C)

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)	BPI fold-containing family A member 1	polymer	240	24995.4	2	UniProt (Q9NP55) Pfam (PF01273)	Homo sapiens (Human)	Lung-specific protein X,Nasopharyngeal carcinoma-related protein,Palate lung and nasal epithelium clone protein,Secretory protein in upper respiratory tracts,Short PLUNC1,SPLUNC1,Tracheal epithelium-enriched protein,Von Ebner protein Hl
2	C, D (A, B)	water	water		18.0	17	Chemie (HOH)

Sequence modifications

A, B: 19 - 256 (UniProt: Q9NP55)

PDB	External Database	Details
Ser 17	-	expression tag
Asn 18	-	expression tag
Cys 48	Ala 48	engineered mutation
Cys 253	Val 253	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	49990.8
All*	Total formula weight	49990.8

*Water molecules are not included.