Selenocysteine synthase

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Human selenocysteine synthase containing phosphoserine complex with tRNASec, monothiophosphate, deoxypyridoxine phosphate (PDB entry 3hl2)

3D Structures of selenocysteine synthase

Updated on 02-September-2019

3bc8, 3bca - mSecS elastase-resistant fragment - mouse

3bcb - mSecS elastase-resistant fragment + phosphate

2z67 - SecS - Methanococcus maripaludis

3hl2 - hSecS + tRNASec + PLP - human
4zdl – hSecS (mutant)
4zdo, 4zdp – hSecS (mutant) + tRNASec
3w1i – AaSecS + pyridine derivative – Aquifex aeolicus
3wcn – AaSecS (mutant)
3w1h, 3wco – AaSecS (mutant) + pyridine derivative
3w1j – AaSecS + pyridine derivative
3w1k – AaSecS (mutant) + pyridine derivative + tRNASec


  1. Forchhammer K, Boesmiller K, Bock A. The function of selenocysteine synthase and SELB in the synthesis and incorporation of selenocysteine. Biochimie. 1991 Dec;73(12):1481-6. PMID:1839607
  2. Schweizer U, Dehina N, Schomburg L. Disorders of selenium metabolism and selenoprotein function. Curr Opin Pediatr. 2011 Aug;23(4):429-35. doi: 10.1097/MOP.0b013e32834877da. PMID:21670677 doi:
  3. Palioura S, Sherrer RL, Steitz TA, Soll D, Simonovic M. The human SepSecS-tRNASec complex reveals the mechanism of selenocysteine formation. Science. 2009 Jul 17;325(5938):321-5. PMID:19608919 doi:325/5938/321

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