(4S)-4-{[(1S)-5-amino-1-{[(1S)-1-{[(1S)-3-carbamoyl-1-{[(2S,3R)-1-[(2S)-2-{[(1S)-1-{[(1S)-1-{[(1S,2R)-1-carboxy-2-hydroxypropyl]carbamoyl}-2-methylpropyl]carbamoyl}-3-methylbutyl]carbamoyl}pyrrolidin-1-yl]-3-hydroxy-1-oxobutan-2-yl]carbamoyl}propyl]carbamoyl}-2-hydroxyethyl]carbamoyl}pentyl]carbamoyl}-4-[(2S)-2-[(2S,3R)-2-[(2S)-2-[(2S)-2-(2-{2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]acetamido}acetamido)-3-phenylpropanamido]-4-(methylsulfanyl)butanamido]-3-hydroxybutanamido]-3-hydroxypropanamido]butanoic acid

• ChemBase ID: 130519
• Molecular Formular: C77H120N18O26S
• Molecular Mass: 1745.9467
• Monoisotopic Mass: 1744.83418705
• SMILES: C[C@H]([C@@H](C(=O)N[C@@H](CO)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCC(=O)N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H]([C@@H](C)O)C(=O)O)NC(=O)[C@H](CCSC)NC(=O)[C@H](Cc1ccccc1)NC(=O)CNC(=O)CNC(=O)[C@H](Cc1ccc(cc1)O)N)O
• Canonical SMILES: NCCCC[C@@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N1CCC[C@H]1C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)O)[C@H](O)C)C(C)C)CC(C)C)[C@H](O)C)CCC(=O)N)CO)NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)[C@H]([C@H](O)C)NC(=O)[C@@H](NC(=O)[C@H](Cc1ccccc1)NC(=O)CNC(=O)CNC(=O)[C@H](Cc1ccc(cc1)O)N)CCSC)CO)CCC(=O)O
• InChI: InChI=1S/C77H120N18O26S/c1-38(2)31-51(70(113)91-60(39(3)4)74(117)94-63(42(7)100)77(120)121)88-73(116)55-18-14-29-95(55)76(119)62(41(6)99)93-67(110)48(23-25-56(80)102)85-71(114)53(36-96)89-65(108)47(17-12-13-28-78)84-66(109)49(24-26-59(105)106)86-72(115)54(37-97)90-75(118)61(40(5)98)92-68(111)50(27-30-122-8)87-69(112)52(33-43-15-10-9-11-16-43)83-58(104)35-81-57(103)34-82-64(107)46(79)32-44-19-21-45(101)22-20-44/h9-11,15-16,19-22,38-42,46-55,60-63,96-101H,12-14,17-18,23-37,78-79H2,1-8H3,(H2,80,102)(H,81,103)(H,82,107)(H,83,104)(H,84,109)(H,85,114)(H,86,115)(H,87,112)(H,88,116)(H,89,108)(H,90,118)(H,91,113)(H,92,111)(H,93,110)(H,94,117)(H,105,106)(H,120,121)/t40-,41-,42-,46+,47+,48+,49+,50+,51+,52+,53+,54+,55+,60+,61+,62+,63+/m1/s1
• InChIKey: NXSIJWJXMWBCBX-NWKQFZAZSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: (4S)-4-{[(1S)-5-amino-1-{[(1S)-1-{[(1S)-3-carbamoyl-1-{[(2S,3R)-1-[(2S)-2-{[(1S)-1-{[(1S)-1-{[(1S,2R)-1-carboxy-2-hydroxypropyl]carbamoyl}-2-methylpropyl]carbamoyl}-3-methylbutyl]carbamoyl}pyrrolidin-1-yl]-3-hydroxy-1-oxobutan-2-yl]carbamoyl}propyl]carbamoyl}-2-hydroxyethyl]carbamoyl}pentyl]carbamoyl}-4-[(2S)-2-[(2S,3R)-2-[(2S)-2-[(2S)-2-(2-{2-[(2S)-2-amino-3-(4-hydroxyphenyl)propanamido]acetamido}acetamido)-3-phenylpropanamido]-4-(methylsulfanyl)butanamido]-3-hydroxybutanamido]-3-hydroxypropanamido]butanoic acid
• IUPAC Traditional name: α-endorphin
• Synonyms: Alpha-endorphin; β-Lipotropin (61-76), human, synthetic; β-Lipotropin 61-76; LPH (61-76); Tyr-Gly-Gly-Phe-Met-Thr-Ser-Glu-Lys-Ser-Gln-Thr-Pro-Leu-Val-Thr; α-Endorphin human

Database IDs

• CAS Number: 59004-96-5; 61512-76-3
• MDL Number: MFCD00076381
• PubChem SID: 162224798; 24894621
• PubChem CID: 16138308
• Chemspider ID: 17294814
• Wikipedia Title: Alpha-endorphin

CALCULATED PROPERTIES

• Acid pKa: 3.1644597
• H Acceptors: 28
• H Donor: 25
• LogD (pH = 5.5): -13.844905
• LogD (pH = 7.4): -13.994407
• Log P: -13.8454485
• Molar Refractivity: 431.3265 cm^3
• Polarizability: 169.79964 Å^3
• Polar Surface Area: 718.82 Å^2
• Rotatable Bonds: 55
• Lipinski's Rule of Five: false

PROPERTIES

Safety Information

• German water hazard class: 3
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
• Storage Temperature: -20°C

Pharmacology Properties

• Gene Information: human ... POMC(5443)

Product Information

• Purity: ≥97% (HPLC); ≥97.0% (HPLC)
• Biological Source: synthetic
• Empirical Formula (Hill Notation): C77H120N18O26S

DETAILS

Sigma Aldrich - E6136

Amino Acid Sequence
Tyr-Gly-Gly-Phe-Met-Thr-Ser-Glu-Lys-Ser-Gln-Thr-Pro-Leu-Val-Thr
Biochem/physiol Actions
α-endorphin is the 1-16 fragment of β-endorphin. It is a substrate for transglutaminase and both α-endorphin and its acetylated form are found in intermediate and anterior lobes of the pituitary. It appears to bind to neuronal opiate receptors, but does not bind to β-endorphin receptors in lymphocytes, vasculature, or vas deferens. Stimulatory effects on immune system function have been reported.

Sigma Aldrich - 45176

Amino Acid Sequence
Tyr-Gly-Gly-Phe-Met-Thr-Ser-Glu-Lys-Ser-Gln-Thr-Pro-Leu-Val-Thr
Other Notes
The endorphins: A growing family of pharmacologically pertinent peptides1