4QQB

Structural basis for the assembly of the SXL-UNR translation regulatory complex

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C (P, C)	msl2 mRNA	polymer	18	5712.4	2
2	B, D (A, B)	Protein sex-lethal	polymer	176	19797.5	2	UniProt (P19339) Pfam (PF00076)	Drosophila melanogaster (Fruit fly)
3	E, F (X, Y)	Upstream of N-ras, isoform A	polymer	72	8205.4	2	UniProt (Q9VSK3) Pfam (PF00313) UniProt (by SIFTS) (B7Z0E2)	Drosophila melanogaster (Fruit fly)

Sequence modifications

A, B: 122 - 294 (UniProt: P19339)

PDB	External Database	Details
Gly 119	-	expression tag
Ala 120	-	expression tag
Met 121	-	expression tag

X, Y: 5 - 72 (UniProt: Q9VSK3)

PDB	External Database	Details
Gly 1	-	expression tag
Ala 2	-	expression tag
Met 3	-	expression tag
Ala 4	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	67430.6
All*	Total formula weight	67430.6

*Water molecules are not included.