Xenin

Xenin is a 25-amino acid peptide initially isolated from human gastric mucosa. Xenin is a gut hormone that can reduce food intake.

Product information

CAS Number: 144092-28-4

Molecular Weight: 2971.57

Formula: C139H224N38O32S

Chemical Name: (4S)-4-{[(1S,2R)-1-{[(1S)-5-amino-1-{[(1S)-1-{[(1S)-1-{[(1S)-1-{[(1S)-1-{[(1S)-5-amino-1-[({[(1S)-1-{[(1S)-1-{[(1S)-1-{[(2S)-1-[(2S)-2-{[(1S)-5-amino-1-{[(2S)-5-carbamimidamido-1-[(2S)-2-{[(1S)-1-{[(1S,2S)-1-{[(1S)-1-carboxy-3-methylbutyl]carbamoyl}-2-methylbutyl]carbamoyl}-2-(1H-indol-3-yl)ethyl]carbamoyl}pyrrolidin-1-yl]-1-oxopentan-2-yl]carbamoyl}pentyl]carbamoyl}pyrrolidin-1-yl]-3-(1H-imidazol-5-yl)-1-oxopropan-2-yl]carbamoyl}-2-phenylethyl]carbamoyl}-2-hydroxyethyl]carbamoyl}-3-methylbutyl]carbamoyl}methyl)carbamoyl]pentyl]carbamoyl}-2-methylpropyl]carbamoyl}-4-carbamimidamidobutyl]carbamoyl}ethyl]carbamoyl}-2-hydroxyethyl]carbamoyl}pentyl]carbamoyl}-2-hydroxypropyl]carbamoyl}-4-[(2S)-2-[(2S)-6-amino-2-[(2S,3R)-2-[(2S)-2-[(2S)-2-amino-4-(methylsulfanyl)butanamido]-4-methylpentanamido]-3-hydroxybutanamido]hexanamido]-3-phenylpropanamido]butanoic acid

Smiles: CC[C@H](C)[C@H](NC(=O)[C@H](CC1=CNC2=CC=CC=C12)NC(=O)[C@@H]1CCCN1C(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CCCCN)NC(=O)[C@@H]1CCCN1C(=O)[C@H](CC1=CN=CN1)NC(=O)[C@H](CC1C=CC=CC=1)NC(=O)[C@H](CO)NC(=O)[C@H](CC(C)C)NC(=O)CNC(=O)[C@H](CCCCN)NC(=O)[C@@H](NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](C)NC(=O)[C@H](CO)NC(=O)[C@H](CCCCN)NC(=O)[C@@H](NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](CC1C=CC=CC=1)NC(=O)[C@H](CCCCN)NC(=O)[C@@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CCSC)[C@@H](C)O)[C@@H](C)O)C(C)C)C(=O)N[C@@H](CC(C)C)C(O)=O

InChiKey: IDHVLSACPFUBDY-QCDLPZBNSA-N

InChi: InChI=1S/C139H224N38O32S/c1-15-79(10)111(132(203)169-103(137(208)209)64-77(6)7)173-126(197)101(67-85-69-152-89-41-23-22-40-87(85)89)167-130(201)107-49-34-59-176(107)135(206)96(47-33-58-151-139(147)148)163-117(188)91(43-25-29-54-141)159-129(200)106-48-35-60-177(106)136(207)102(68-86-70-149-74-154-86)168-124(195)100(66-84-38-20-17-21-39-84)166-128(199)105(73-179)171-122(193)97(62-75(2)3)156-108(182)71-153-116(187)90(42-24-28-53-140)160-131(202)110(78(8)9)172-120(191)94(46-32-57-150-138(145)146)157-114(185)80(11)155-127(198)104(72-178)170-119(190)93(45-27-31-56-143)162-133(204)112(81(12)180)174-121(192)95(50-51-109(183)184)158-123(194)99(65-83-36-18-16-19-37-83)165-118(189)92(44-26-30-55-142)161-134(205)113(82(13)181)175-125(196)98(63-76(4)5)164-115(186)88(144)52-61-210-14/h16-23,36-41,69-70,74-82,88,90-107,110-113,152,178-181H,15,24-35,42-68,71-73,140-144H2,1-14H3,(H,149,154)(H,153,187)(H,155,198)(H,156,182)(H,157,185)(H,158,194)(H,159,200)(H,160,202)(H,161,205)(H,162,204)(H,163,188)(H,164,186)(H,165,189)(H,166,199)(H,167,201)(H,168,195)(H,169,203)(H,170,190)(H,171,193)(H,172,191)(H,173,197)(H,174,192)(H,175,196)(H,183,184)(H,208,209)(H4,145,146,150)(H4,147,148,151)/t79-,80-,81+,82+,88-,90-,91-,92-,93-,94-,95-,96-,97-,98-,99-,100-,101-,102-,103-,104-,105-,106-,107-,110-,111-,112-,113-/m0/s1

Technical Data

Appearance: Solid Power

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

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:

Xenin is abundantly expressed in gastric, duodenal, and jejunal mucosa, and is found at lower levels in the pancreas. Xenin is released into the circulation postprandially and has been reported to stimulatepancreatic endocrine and exocrine secretion, inhibit gastrin secretion, and influence gastrointestinal motility. Xenin is highly homologous to neurotensin. Xenin and neurotensin are reported to have similar biological effects.

In Vivo:

Both intracerebroventricular and intraperitoneal administration of xenin inhibit fasting-induced hyperphagia in wild-type mice in a dose-dependent manner. The intraperitoneal injection of xenin also reduces nocturnal intake in ad libitum–fed wild-type mice. The intraperitoneal injection of xenin increases Fos immunoreactivity in hypothalamic nuclei, including the paraventricular nucleus and the arcuate nucleus. Xenin reduces food intake in agouti and ob/ob mice. Gastric emptying rate is reduced by about 93% in xenin-treated mice compared to saline-treated control mice. The i.p. xenin injection significantly increases Fos-immunoreactive cells in the nucleus of the solitary tract of the brainstem, but not area postrema and dorsal motor nucleus of the vagus.

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