Thymosin b4 (1-4) (Ac-Ser-Asp-Lys-Pro-OH) | 885-21

CAS Number: 127103-11-1
Molecular Weight: 487.23
Salt Form: TFA
Purity: >96%
Sequence (3-letter): Ac-Ser-Asp-Lys-Pro-OH
Sequence (1-letter): Ac-SDKP-OH
Storage: -20 °C or below

An endogenous tetrapeptide formed in bone marrow cells by enzymatic processing of thymosin β4. It inhibits the entry into S-phase of the cell cycle of pluripotent hemopoietic stem cells.  It is a specific substrate for the N-terminal active site of angiotensin converting enzyme, which is responsible for its degradation in vivo.