2XLK

Crystal structure of the Csy4-crRNA complex, orthorhombic form

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	CSY4 ENDORIBONUCLEASE	polymer	191	21866.0	2	UniProt (A3KUJ4) Pfam (PF09618) UniProt (by SIFTS) (Q02MM2) In PDB	PSEUDOMONAS AERUGINOSA
2	C, D	5'-R(*CP*UP*GP*CP*CP*GP*UP*AP*UP*AP*GP*GP*CP*A*DG*C)-3'	polymer	16	5097.1	2		PSEUDOMONAS AERUGINOSA	PA14 CRRNA HAIRPIN
3		water	water		18.0	413	Chemie (HOH)

Sequence modifications

A, B: 1 - 187 (UniProt: A3KUJ4)

PDB	External Database	Details
Gly -3	-	expression tag
Ser -2	-	expression tag
Phe -1	-	expression tag
Thr 0	-	expression tag
Cys 22	Ser 22	engineered mutation
Val 166	Ala 166	conflict

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	53926.2
All*	Total formula weight	53926.2

*Water molecules are not included.