5XAN

Crystal structure of SecDF in I form (P212121 space group)

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)	Protein translocase subunit SecD	polymer	750	80633.0	2	UniProt (Q9RTE3) Pfam (PF21760) Pfam (PF22599) Pfam (PF02355) Pfam (PF07549)	Deinococcus radiodurans str. R1	Protein-export membrane protein SecF
2	C, D, E, F, G... (A, B)	(2R)-2,3-dihydroxypropyl (9Z)-octadec-9-enoate	non-polymer		356.5	9	Chemie (OLC)
3	L, M, N, O (B)	POLYETHYLENE GLYCOL (N=34)	non-polymer		1529.8	4	Chemie (15P)
4	P, Q (A, B)	water	water		18.0	122	Chemie (HOH)

Sequence modifications

A, B: 28 - 768 (UniProt: Q9RTE3)

PDB	External Database	Details
Met 27	-	expression tag
Cys 143	Ile 143	engineered mutation
Cys 268	Leu 268	engineered mutation
His 769	-	expression tag
His 770	-	expression tag
His 771	-	expression tag
His 772	-	expression tag
His 773	-	expression tag
His 774	-	expression tag
His 775	-	expression tag
His 776	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	161266.0
Non-Polymers*	Number of molecules	13
	Total formula weight	9328.2
All*	Total formula weight	170594.2

*Water molecules are not included.