Peptide Database

Peptide NameRelaxin B chain

Function Ontology

Hormonal / Endocrine ▸ Hormone peptide

Standard StatusStandard

Sequence Length30 amino acids

Chemical FormulaC151H236N44O41S2

DescriptionStandard

        QSFKNAEPGIKLCGREFIRAVIYTCGGSRW
    

Molecular Weight3387.89 Da

Isoelectric Point (pI)9.39

Net Charge (pH 7.0)2.74

Net Charge (pH 7.4) 2.50

Charge Density (pH 7.0) 0.0914

GRAVY Index-0.24

Hydrophobic Moment 0.71

Boman Index-0.02

Instability Index44.03

Aliphatic Index 68.33

Aromaticity 0.1333

Extinction Coeff. Reduced 6990.00

Extinction Coeff. Oxidized 7115.00

The radar chart summarizes major physicochemical dimensions for quick comparison, while exact numerical values remain listed on the left.

Amino Acid Composition

TPSA 1393.66

LogP -13.33

H-bond Donors 52.0

H-bond Acceptors 46.0

Rotatable Bonds 111.0

Heavy Atoms 238.0

Ring Count 6.0

Amide Bonds 31.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0028114 VERIFIED: YES

Provenance & Taxonomy

OrganismSqualus acanthias [Animal]

FamilyRelaxin

Tax ID7797

Structure & Mods

Configlinear peptide [Linear]

Chiralitynoncanonical stereochemical modification [Modified]

N-TermPyroglutamate

Bio-Activity Profile

Function

Hormone Endocrine

Half-LifeMammalian: 0.8 hour; Yeast: 10 min; E. coli: >10 hour