Substance P

tachykinin, precursor 1
Spacefilling model of substance P
Identifiers
SymbolTAC1
Alt. symbolsTAC2, NKNA
NCBI gene6863
HGNC11517
OMIM162320
RefSeqNM_003182
UniProtP20366
Other data
LocusChr. 7 q21-q22
Search for
StructuresSwiss-model
DomainsInterPro
Substance P
Identifiers
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.046.845 Edit this at Wikidata
MeSH Substance+P
UNII
  • InChI=
    1S/C63H98N18O13S/c1-37(2)33-45(57(89)74-41(53(68)85)27-32-95-3)73-52(84)36-72-54(86)46(34-38-15-6-4-7-16-38)78-58(90)47(35-39-17-8-5-9-18-39)79-56(88)42(23-25-50(66)82)75-55(87)43(24-26-51(67)83)76-59(91)49-22-14-31-81(49)62(94)44(20-10-11-28-64)77-60(92)48-21-13-30-80(48)61(93)40(65)19-12-29-71-63(69)70/h4-9,15-18,37,40-49H,10-14,19-36,64-65H2,1-3H3,(H2,66,82)(H2,67,83)(H2,68,85)(H,72,86)(H,73,84)(H,74,89)(H,75,87)(H,76,91)(H,77,92)(H,78,90)(H,79,88)(H4,69,70,71)/t40-,41-,42-,43-,44-,45-,46-,47-,48-,49-/m0/s1
     ☒N
    Key: ADNPLDHMAVUMIW-CUZNLEPHSA-N checkY
  • InChI=
    1/C63H98N18O13S/c1-37(2)33-45(57(89)74-41(53(68)85)27-32-95-3)73-52(84)36-72-54(86)46(34-38-15-6-4-7-16-38)78-58(90)47(35-39-17-8-5-9-18-39)79-56(88)42(23-25-50(66)82)75-55(87)43(24-26-51(67)83)76-59(91)49-22-14-31-81(49)62(94)44(20-10-11-28-64)77-60(92)48-21-13-30-80(48)61(914,19-36,64-65H2,1-3H3,(H2,66,82)(H2,67,83)(H2,68,85)(H,72,86)(H,73,84)(H,74,89)(H,75,87)(H,76,91)(H,77,92)(H,78,90)(H,79,88)(H4,69,70,71)/t40-,41-,42-,43-,44-,45-,46-,47-,48-,49-/m0/s1
    Key: ADNPLDHMAVUMIW-CUZNLEPHBU
Properties
C63H98N18O13S
Molar mass 1347.63 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Substance P (SP) is an undecapeptide (a peptide composed of a chain of 11 amino acid residues)[1] and a type of neuropeptide, belonging to the tachykinin family of neuropeptides. It acts as a neurotransmitter and a neuromodulator.[2][3] Substance P and the closely related neurokinin A (NKA) are produced from a polyprotein precursor after alternative splicing of the preprotachykinin A gene. The deduced amino acid sequence of substance P is as follows:[4]

with an amide group at the C-terminus.[5] Substance P is released from the terminals of specific sensory nerves. It is found in the brain and spinal cord and is associated with inflammatory processes and pain.

  1. ^ "Undecapeptide Definition & Meaning". Merriam-Webster. Retrieved 17 November 2022.
  2. ^ Harrison S, Geppetti P (Jun 2001). "Substance p". The International Journal of Biochemistry & Cell Biology. 33 (6): 555–76. doi:10.1016/S1357-2725(01)00031-0. PMID 11378438.
  3. ^ Datar P, Srivastava S, Coutinho E, Govil G (2004). "Substance P: structure, function, and therapeutics". Current Topics in Medicinal Chemistry. 4 (1): 75–103. doi:10.2174/1568026043451636. PMID 14754378. Archived from the original on 2009-08-17. Retrieved 2008-11-01.{{cite journal}}: CS1 maint: unfit URL (link)
  4. ^ Reece JB, Campbell NA (2005). Biology, 7th Edition. San Francisco: Pearson, Benjamin Cummings. ISBN 9780805371468. OCLC 57368924.
  5. ^ Wong M, Jeng AY (Jan 1994). "Posttranslational modification of glycine-extended substance P by an alpha-amidating enzyme in cultured sensory neurons of dorsal root ganglia". Journal of Neuroscience Research. 37 (1): 97–102. doi:10.1002/jnr.490370113. PMID 7511706. S2CID 31252390.