Common NameL-histidyl-l-leucine
DescriptionHistidylleucine is a dipeptide composed of histidine and leucine. It is an incomplete breakdown product of protein digestion or protein catabolism. Dipeptides are organic compounds containing a sequence of exactly two alpha-amino acids joined by a peptide bond. Some dipeptides are known to have physiological or cell-signalling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis.
Structure
Molecular FormulaC12H20N4O3
Average Mass268.31700
Monoisotopic Mass268.15354
IUPAC Name2-[2-amino-3-(1H-imidazol-5-yl)propanamido]-4-methylpentanoic acid
Traditional Name2-[2-amino-3-(3h-imidazol-4-yl)propanamido]-4-methylpentanoic acid
CAS Registry Number7763-65-7
SMILESCC(C)C[C@H](NC(=O)[C@@H]([NH3+])Cc1c[nH]cn1)C(=O)[O-]
InChI IdentifierInChI=1S/C12H20N4O3/c1-7(2)3-10(12(18)19)16-11(17)9(13)4-8-5-14-6-15-8/h5-7,9-10H,3-4,13H2,1-2H3,(H,14,15)(H,16,17)(H,18,19)/t9-,10-/m0/s1
InChI KeyMMFKFJORZBJVNF-UWVGGRQHSA-N
CHEBI IDCHEBI:147392
HMDB IDHMDB0028889
StateSolid
Water Solubility3.30e+00 g/l
logP-2.00
logS-1.91
pKa (Strongest Acidic)3.61
pKa (Strongest Basic)8.02
Hydrogen Acceptor Count5
Hydrogen Donor Count4
Polar Surface Area121.1 Ų
Rotatable Bond Count7
Physiological Charge0
Formal Charge0
Refractivity69.03 m³·mol⁻¹
Polarizability28.03

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