2gek

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Crystal Structure of phosphatidylinositol mannosyltransferase (PimA) from Mycobacterium smegmatis in complex with GDP

Structural highlights

2gek is a 1 chain structure with sequence from Mycolicibacterium smegmatis MC2 155. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.4Å
Ligands:GDP
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PIMA_MYCS2 Catalyzes the addition of a mannose residue from GDP-D-mannose to the position 2 of a phosphatidyl-myo-inositol (PI) to generate a phosphatidyl-myo-inositol bearing an alpha-1,2-linked mannose residue (PIM1). Contrary to PimB, the mannosyltransferase PimA is unable to transfer a mannose residue to the position 6 of the phosphatidyl-myo-inositola of PIM1.[1] [2]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

References

  1. ↑ Kordulakova J, Gilleron M, Mikusova K, Puzo G, Brennan PJ, Gicquel B, Jackson M. Definition of the first mannosylation step in phosphatidylinositol mannoside synthesis. PimA is essential for growth of mycobacteria. J Biol Chem. 2002 Aug 30;277(35):31335-44. Epub 2002 Jun 14. PMID:12068013 doi:10.1074/jbc.M204060200
  2. ↑ Guerin ME, Kaur D, Somashekar BS, Gibbs S, Gest P, Chatterjee D, Brennan PJ, Jackson M. New insights into the early steps of phosphatidylinositol mannoside biosynthesis in mycobacteria: PimB' is an essential enzyme of Mycobacterium smegmatis. J Biol Chem. 2009 Sep 18;284(38):25687-96. doi: 10.1074/jbc.M109.030593. Epub, 2009 Jul 28. PMID:19638342 doi:http://dx.doi.org/10.1074/jbc.M109.030593

Contents


PDB ID 2gek

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OCA

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