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HMDB Protein ID HMDBP00807
Secondary Accession Numbers
  • 6087
  • HMDBP06082
Name Leukotriene C4 synthase
  1. LTC4 synthase
  2. Leukotriene-C(4) synthase
Gene Name LTC4S
Protein Type Enzyme
Biological Properties
General Function Involved in enzyme activator activity
Specific Function Catalyzes the conjugation of leukotriene A4 with reduced glutathione to form leukotriene C4.
  • Acetaminophen Action Pathway
  • Acetylsalicylic Acid Action Pathway
  • Antipyrine Action Pathway
  • Antrafenine Action Pathway
  • Arachidonic acid metabolism
  • Arachidonic Acid Metabolism
  • Bromfenac Action Pathway
  • Carprofen Action Pathway
  • Celecoxib Action Pathway
  • Diclofenac Action Pathway
  • Diflunisal Action Pathway
  • Etodolac Action Pathway
  • Etoricoxib Action Pathway
  • Fenoprofen Action Pathway
  • Flurbiprofen Action Pathway
  • Ibuprofen Action Pathway
  • Indomethacin Action Pathway
  • Ketoprofen Action Pathway
  • Ketorolac Action Pathway
  • Leukotriene C4 Synthesis Deficiency
  • Lornoxicam Action Pathway
  • Lumiracoxib Action Pathway
  • Magnesium salicylate Action Pathway
  • Mefenamic Acid Action Pathway
  • Meloxicam Action Pathway
  • Nabumetone Action Pathway
  • Naproxen Action Pathway
  • Nepafenac Action Pathway
  • Oxaprozin Action Pathway
  • Phenylbutazone Action Pathway
  • Piroxicam Action Pathway
  • Rofecoxib Action Pathway
  • Salicylate-sodium Action Pathway
  • Salicylic Acid Action Pathway
  • Salsalate Action Pathway
  • Sulindac Action Pathway
  • Suprofen Action Pathway
  • Tenoxicam Action Pathway
  • Tiaprofenic Acid Action Pathway
  • Tolmetin Action Pathway
  • Trisalicylate-choline Action Pathway
  • Valdecoxib Action Pathway
Leukotriene C(4) → leukotriene A(4) + Glutathione details
Leukotriene A4 + Glutathione → Leukotriene C4 details
GO Classification
Biological Process
response to inorganic substance
response to drug
cellular response to lipopolysaccharide
cellular response to vitamin A
leukotriene metabolic process
positive regulation of catalytic activity
glutathione biosynthetic process
leukotriene biosynthetic process
response to axon injury
Cellular Component
endoplasmic reticulum membrane
endoplasmic reticulum
nuclear envelope
nuclear outer membrane
integral to membrane
cell part
membrane part
intrinsic to membrane
integral to membrane
enzyme regulator activity
enzyme activator activity
Molecular Function
glutathione peroxidase activity
glutathione binding
glutathione transferase activity
lipid binding
enzyme activator activity
leukotriene-C4 synthase activity
metabolic process
cellular metabolic process
organic acid metabolic process
oxoacid metabolic process
carboxylic acid metabolic process
monocarboxylic acid metabolic process
fatty acid metabolic process
unsaturated fatty acid metabolic process
icosanoid metabolic process
leukotriene metabolic process
Cellular Location
  1. Endoplasmic reticulum membrane
  2. Multi-pass membrane protein
  3. Multi-pass membrane protein
  4. Nucleus outer membrane
Gene Properties
Chromosome Location 5
Locus 5q35
Gene Sequence
>453 bp
Protein Properties
Number of Residues 150
Molecular Weight 16566.465
Theoretical pI 10.187
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence
>Leukotriene C4 synthase
GenBank ID Protein Not Available
UniProtKB/Swiss-Prot ID Q16873
UniProtKB/Swiss-Prot Entry Name LTC4S_HUMAN
GenBank Gene ID U09353
GeneCard ID LTC4S
GenAtlas ID LTC4S
General References
  1. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. [PubMed:15489334 ]
  2. Lam BK, Penrose JF, Freeman GJ, Austen KF: Expression cloning of a cDNA for human leukotriene C4 synthase, an integral membrane protein conjugating reduced glutathione to leukotriene A4. Proc Natl Acad Sci U S A. 1994 Aug 2;91(16):7663-7. [PubMed:8052639 ]
  3. Welsch DJ, Creely DP, Hauser SD, Mathis KJ, Krivi GG, Isakson PC: Molecular cloning and expression of human leukotriene-C4 synthase. Proc Natl Acad Sci U S A. 1994 Oct 11;91(21):9745-9. [PubMed:7937884 ]
  4. Penrose JF, Spector J, Baldasaro M, Xu K, Boyce J, Arm JP, Austen KF, Lam BK: Molecular cloning of the gene for human leukotriene C4 synthase. Organization, nucleotide sequence, and chromosomal localization to 5q35. J Biol Chem. 1996 May 10;271(19):11356-61. [PubMed:8626689 ]
  5. Bigby TD, Hodulik CR, Arden KC, Fu L: Molecular cloning of the human leukotriene C4 synthase gene and assignment to chromosome 5q35. Mol Med. 1996 Sep;2(5):637-46. [PubMed:8898379 ]
  6. Nicholson DW, Ali A, Vaillancourt JP, Calaycay JR, Mumford RA, Zamboni RJ, Ford-Hutchinson AW: Purification to homogeneity and the N-terminal sequence of human leukotriene C4 synthase: a homodimeric glutathione S-transferase composed of 18-kDa subunits. Proc Natl Acad Sci U S A. 1993 Mar 1;90(5):2015-9. [PubMed:8446623 ]
  7. Penrose JF, Spector J, Lam BK, Friend DS, Xu K, Jack RM, Austen KF: Purification of human lung leukotriene C4 synthase and preparation of a polyclonal antibody. Am J Respir Crit Care Med. 1995 Jul;152(1):283-9. [PubMed:7599836 ]
  8. Goppelt-Struebe M: Two step purification of human and murine leukotriene C4 synthase. Biochim Biophys Acta. 1995 May 17;1256(2):257-61. [PubMed:7766706 ]
  9. Mayatepek E, Flock B: Leukotriene C4-synthesis deficiency: a new inborn error of metabolism linked to a fatal developmental syndrome. Lancet. 1998 Nov 7;352(9139):1514-7. [PubMed:9820300 ]
  10. Mayatepek E, Zelezny R, Lehmann WD, Hammond JW, Hoffmann GF: Defects in the synthesis of cysteinyl leukotrienes: a new group of inborn errors of metabolism. J Inherit Metab Dis. 2000 Jun;23(4):404-8. [PubMed:10896305 ]
  11. Christmas P, Weber BM, McKee M, Brown D, Soberman RJ: Membrane localization and topology of leukotriene C4 synthase. J Biol Chem. 2002 Aug 9;277(32):28902-8. Epub 2002 May 21. [PubMed:12023288 ]
  12. Strid T, Svartz J, Franck N, Hallin E, Ingelsson B, Soderstrom M, Hammarstrom S: Distinct parts of leukotriene C(4) synthase interact with 5-lipoxygenase and 5-lipoxygenase activating protein. Biochem Biophys Res Commun. 2009 Apr 17;381(4):518-22. doi: 10.1016/j.bbrc.2009.02.074. Epub 2009 Feb 20. [PubMed:19233132 ]
  13. Ago H, Kanaoka Y, Irikura D, Lam BK, Shimamura T, Austen KF, Miyano M: Crystal structure of a human membrane protein involved in cysteinyl leukotriene biosynthesis. Nature. 2007 Aug 2;448(7153):609-12. Epub 2007 Jul 15. [PubMed:17632548 ]
  14. Martinez Molina D, Wetterholm A, Kohl A, McCarthy AA, Niegowski D, Ohlson E, Hammarberg T, Eshaghi S, Haeggstrom JZ, Nordlund P: Structural basis for synthesis of inflammatory mediators by human leukotriene C4 synthase. Nature. 2007 Aug 2;448(7153):613-6. Epub 2007 Jul 15. [PubMed:17632546 ]