Kinetensin

Kinetensin is a neurotensin-like peptide isolated from pepsin-treated human plasma.

Product information

CAS Number: 103131-69-7

Molecular Weight: 1172.38

Formula: C56H85N17O11

Chemical Name: (2S)-2-[(2S)-2-[(2S)-2-{[(2S)-1-[(2S)-2-[(2S)-2-[(2S)-2-[(2S)-2-[(2S,3S)-2-amino-3-methylpentanamido]propanamido]-5-[(diaminomethylidene)amino]pentanamido]-5-[(diaminomethylidene)amino]pentanamido]-3-(1H-imidazol-5-yl)propanoyl]pyrrolidin-2-yl]formamido}-3-(4-hydroxyphenyl)propanamido]-3-phenylpropanamido]-4-methylpentanoic acid

Smiles: CC(C)C[C@H](NC(=O)[C@H](CC1=CC=CC=C1)NC(=O)[C@H](CC1=CC=C(O)C=C1)NC(=O)[C@@H]1CCCN1C(=O)[C@H](CC1=CN=CN1)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](C)NC(=O)[C@@H](N)[C@@H](C)CC)C(O)=O

InChiKey: PANUJGMSOSQAAY-IHXGQVBNSA-N

InChi: InChI=1S/C56H85N17O11/c1-6-32(4)45(57)52(81)66-33(5)46(75)67-38(15-10-22-63-55(58)59)47(76)68-39(16-11-23-64-56(60)61)48(77)71-42(28-36-29-62-30-65-36)53(82)73-24-12-17-44(73)51(80)70-41(27-35-18-20-37(74)21-19-35)49(78)69-40(26-34-13-8-7-9-14-34)50(79)72-43(54(83)84)25-31(2)3/h7-9,13-14,18-21,29-33,38-45,74H,6,10-12,15-17,22-28,57H2,1-5H3,(H,62,65)(H,66,81)(H,67,75)(H,68,76)(H,69,78)(H,70,80)(H,71,77)(H,72,79)(H,83,84)(H4,58,59,63)(H4,60,61,64)/t32-,33-,38-,39-,40-,41-,42-,43-,44-,45-/m0/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO : 100 mg/mL (85.30 mM; Need ultrasonic).

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

The peptide kinetensin isolated from pepsin-treated human plasma induces a dose-dependent release of histamine when exposed to rat peritoneal mast cells. The threshold concentration is around 1 μM, the ED50 is 10 μM, and the optimal concentration of between 100 to 1000 μM released 80% of the total histamine. Kinetensin is 10 to 100 times less potent than neurotensin and equipotent with the opioid peptide dynorphin. The histamine release is clearly temperature-dependent, with no release occurring at 0 or 45 °C and with an optimum around 37 °C. The histamine release is significantly reduced in the absence of extracellular calcium.

In Vivo:

Kinetensin also induces a dose-dependent increase in vascular permeability when injected intradermally into rats.

Products are for research use only. Not for human use.