O6012

Orexin A human, rat, mouse

≥97% (HPLC)

• 同義詞: Hypocretin 1
• 經驗公式（希爾表示法）: C₁₅₂H₂₄₃N₄₇O₄₄S₄
• CAS號碼: 205599-75-3
• 分子量：: 3561.10
• MDL號碼: MFCD01635374
• 分類程式碼代碼: 51111800
• NACRES: NA.32

屬性

• 無菌: non-sterile
• 品質等級: 200
• 化驗: ≥97% (HPLC)
• 形狀: powder
• 溶解度: 1% acetic acid: 1.00-1.04 mg/mL, clear, colorless; water: 1.00-1.04 mg/mL, clear, colorless
• UniProt登錄號: O43612; O55232; O55241
• 運輸包裝: ambient
• 儲存溫度: −20°C
• InChI: 1S/C152H243N47O44S4/c1-20-76(14)118(146(239)188-96(51-74(10)11)138(231)197-119(80(18)201)147(240)180-92(121(156)214)47-70(2)3)195-115(209)62-166-123(216)78(16)171-124(217)79(17)172-131(224)99(55-84-59-162-69-169-84)186-136(229)100(56-111(155)205)174-114(208)61-165-122(215)77(15)170-113(207)60-167-125(218)98(54-83-58-161-68-168-83)185-134(227)95(50-73(8)9)183-132(225)93(48-71(4)5)182-129(222)90(38-41-116(210)211)179-135(228)97(53-82-32-34-85(203)35-33-82)184-133(226)94(49-72(6)7)181-127(220)88(29-24-44-164-152(159)160)177-140(233)104-64-244-245-65-105-141(234)176-87(28-23-43-163-151(157)158)126(219)178-89(36-39-110(154)204)128(221)175-86(27-21-22-42-153)130(223)196-120(81(19)202)148(241)194-107(142(235)190-103(63-200)139(232)192-104)67-247-246-66-106(143(236)193-105)191-137(230)101(57-117(212)213)187-144(237)108-30-26-46-199(108)150(243)102(52-75(12)13)189-145(238)109-31-25-45-198(109)149(242)91-37-40-112(206)173-91/h32-35,58-59,68-81,86-109,118-120,200-203H,20-31,36-57,60-67,153H2,1-19H3,(H2,154,204)(H2,155,205)(H2,156,214)(H,161,168)(H,162,169)(H,165,215)(H,166,216)(H,167,218)(H,170,207)(H,171,217)(H,172,224)(H,173,206)(H,174,208)(H,175,221)(H,176,234)(H,177,233)(H,178,219)(H,179,228)(H,180,240)(H,181,220)(H,182,222)(H,183,225)(H,184,226)(H,185,227)(H,186,229)(H,187,237)(H,188,239)(H,189,238)(H,190,235)(H,191,230)(H,192,232)(H,193,236)(H,194,241)(H,195,209)(H,196,223)(H,197,231)(H,210,211)(H,212,213)(H4,157,158,163)(H4,159,160,164)/t76-,77-,78-,79-,80+,81+,86-,87-,88-,89-,90-,91-,92-,93-,94-,95-,96-,97-,98-,99-,100-,101-,102-,103-,104-,105-,106-,107-,108-,109-,118-,119-,120-/m0/s1
• InChI 密鑰: OFNHNCAUVYOTPM-IIIOAANCSA-N
• 基因資訊: human ... HCRT(3060) ; mouse ... Hcrt(15171) ; rat ... Hcrt(25723)

描述

Amino Acid Sequence

Glp-Pro-Leu-Pro-Asp-Cys-Cys-Arg-Gln-Lys-Thr-Cys-Ser-Cys-Arg-Leu-Tyr-Glu-Leu-Leu-His-Gly-Ala-Gly-Asn-His-Ala-Ala-Gly-Ile-Leu-Thr-Leu-NH2 [Disulfide Bridges: 6-12; 7-14]

一般說明

Orexin A is characterized with an N-terminal pyroglutamyl residue, two intramolecular disulfide bridges and a C-terminal amidation.

Orexin A, also known as hypocretin 1 (hcrt1), is a 33 amino acid excitatory neuropeptide, localized in a small set of neurons in the perifornical area of the hypothalamus. It is synthesized from the precursor protein prepro-orexin in neurons. Orexin A binds to its G-protein-coupled receptor orexin-1 (OX1) which is also called as hcrt receptors 1 (hcrtr1).

應用

Orexin A has been used to study its effect on serum luteinizing hormone (LH) concentration in lateral ventricle in ovariectomized (OVX) gilts and is used to study the behavioral and metabolic effects of central injections of orexin A on pigeons (Columba livia).

Orexin A human, rat, mouse has been used to study its effect on the functioning of porcine pancreatic islets. It has also been used as an orexin receptor 1 (OX1R) antagonist to study the effect of orexin systems in the effect of etonogestrel on respiratory response to prolonged metabolic acidosis.

生化／生理作用

Orexins (hypocretins) comprise a family of hypothalamic peptides that are involved in the initiation of sleep and in feeding behavior. Orexin A stimulates food intake through activation of the OX1 receptor. Orexin B activates OX2 receptors. Both OX1 and OX2 receptors are involved in maintaining arousal. OX2 receptors appear to be inhibitory autoreceptors on orexin-containing neurons.

Orexins plays a vital role in several physiological functions including feeding, neuroendocrine regulation and arousal. In addition to this, it is also associated with the pathophysiology of narcolepsy. Orexin A, expressed in locus coeruleus (LC) area, binds to orexin-1 (OX1) receptor and regulates rapid eye movement (REM) sleep by acting on the firing rate of noradrenergic neurons. Orexin A release is regulated by suprachiasmatic nucleus (SCN).

其他說明

Lyophilized from 0.1% TFA in H2O

安全資訊

• 儲存類別代碼: 11 - Combustible Solids
• 水污染物質分類（WGK）: WGK 3
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable
• 個人防護裝備: Eyeshields, Gloves, type N95 (US)