4PFT

Crystal structure of mannobiose bound oligopeptide ABC transporter, periplasmic oligopeptide-binding protein (TM1223) from THERMOTOGA MARITIMA at 1.75 A resolution

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	ABC transporter substrate-binding protein	polymer	544	62881.1	2	UniProt (Q9X0V0) Pfam (PF00496) In PDB	Thermotoga maritima	Mannoside ABC transport system,sugar-binding protein,Oligopeptide ABC transporter,periplasmic oligopeptide-binding protein
2	C, D	beta-D-mannopyranose-(1-4)-beta-D-mannopyranose	branched		342.3	2	In PDB BIRD (PRD_900115) GlyTouCan (G78317QO)		4beta-beta-mannobiose
3	A, B	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
4	A, B	NITRATE ION	non-polymer		62.0	3	Chemie (NO3)
5		water	water		18.0	1248	Chemie (HOH)

Sequence modifications

A, B: 21 - 557 (UniProt: Q9X0V0)

PDB	External Database	Details
Met 20	-	initiating methionine
His 558	-	expression tag
His 559	-	expression tag
His 560	-	expression tag
His 561	-	expression tag
His 562	-	expression tag
His 563	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	125762.1
Branched	Number of molecules	2
	Total formula weight	684.6
Non-Polymers*	Number of molecules	5
	Total formula weight	234.6
All*	Total formula weight	126681.4

*Water molecules are not included.