Substance K

Neurokinin A A mammalian neuropeptide of 10 amino acids that belongs to the tachykinin family. It is similar in structure and action to SUBSTANCE P and NEUROKININ B with the ability to excite neurons, dilate blood vessels, and contract smooth muscles, such as those in the BRONCHI.

Molecular Formula: C₅₀H₈₀N₁₄O₁₄S

InChI: InChI=1/C50H80N14O14S/c1-26(2)18-34(45(73)58-32(42(53)70)15-17-79-6)57-38(67)23-55-49(77)40(27(3)4)63-47(75)35(19-29-12-8-7-9-13-29)60-48(76)37(24-65)62-46(74)36(21-39(68)69)61-50(78)41(28(5)66)64-44(72)33(14-10-11-16-51)59-43(71)31(52)20-30-22-54-25-56-30/h7-9,12-13,22,25-28,31-37,40-41,65-66H,10-11,14-21,23-24,51-52H2,1-6H3,(H2,53,70)(H,54,56)(H,55,77)(H,57,67)(H,58,73)(H,59,71)(H,60,76)(H,61,78)(H,62,74)(H,63,75)(H,64,72)(H,68,69)/f/h55-64,68H,53H2

InChIKey: InChIKey=HEAUFJZALFKPBA-UHTYZVRYCE
SMILES: CC(C)CC(C(=O)NC(CCSC)C(=O)N)NC(=O)CNC(=O)C(C(C)C)NC(=O)C(CC1=CC=CC=C1)NC(=O)C(CO)NC(=O)C(CC(=O)O)NC(=O)C(C(C)O)NC(=O)C(CCCCN)NC(=O)C(CC2=CN=CN2)N

Names:
    Neurokinin alpha (porcine)
    Neurokinin A (alligator)
    Neurokinin A (pig spinal cord)
    Neurokinin A (Python molurus)
    NEUROKININ A
    Neurokinin alpha
    Neuromedin L (pig spinal cord)
    Neuromedin L
    Porcine neurokinin A
    Substance K
    3-[[2-[[6-amino-2-[[2-amino-3-(3H-imidazol-4-yl)propanoyl]amino]hexanoyl]amino]-3-hydroxy-butanoyl]amino]-3-[[1-[[1-[[1-[[1-[(1-carbamoyl-3-methylsulfanyl-propyl)carbamoyl]-3-methyl-butyl]carbamoylmethylcarbamoyl]-2-methyl-propyl]carbamoyl]-2-phenyl-ethyl]carbamoyl]-2-hydroxy-ethyl]carbamoyl]propanoic acid

Registries:
    PubChem CID 55582
    PubChem ID 193001