Peptide Database

Peptide NameSperm activating peptide II

Function Ontology

Reproductive biology ▸ Male reproductive modulation

Standard StatusStandard

Sequence Length9 amino acids

Chemical FormulaC37H59N11O16

DescriptionStandard

        DSDSAHLIG
    

Molecular Weight913.93 Da

Isoelectric Point (pI)4.20

Net Charge (pH 7.0)-2.15

Net Charge (pH 7.4) -2.40

Charge Density (pH 7.0) -0.2389

GRAVY Index-0.23

Hydrophobic Moment 0.18

Boman Index0.11

Instability Index42.26

Aliphatic Index 97.78

Aromaticity 0.0000

Extinction Coeff. Reduced 0.00

Extinction Coeff. Oxidized 0.00

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

Amino Acid Composition

TPSA 439.86

LogP -6.08

H-bond Donors 15.0

H-bond Acceptors 15.0

Rotatable Bonds 29.0

Heavy Atoms 64.0

Ring Count 1.0

Amide Bonds 8.0

3D PDB MODEL

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2D CHEMICAL STRUCTURE

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RECORD: Rec_0133039 VERIFIED: NO

Provenance & Taxonomy

OrganismClypeaster japonicus [Animal]; Astriclypeus manni [Animal]

Structure & Mods

Configlinear peptide [Linear]

Chiralitycanonical L-amino-acid peptide [L]

Bio-Activity Profile

Function

Sperm activator