Polyketide synthase, phosphopantetheine-binding domain (IPR020806)

Short name: PKS_PP-bd

Overlapping homologous superfamilies

Domain relationships


Phosphopantetheine (or pantetheine 4' phosphate) is the prosthetic group of acyl carrier proteins (ACP) in some multienzyme complexes where it serves as a 'swinging arm' for the attachment of activated fatty acid and amino-acid groups [PMID: 5321311].

The amino-terminal region of the ACP proteins is well defined and consists of alpha four helices arranged in a right-handed bundle held together by interhelical hydrophobic interactions. The Asp-Ser-Leu (DSL) motif is conserved in all of the ACP sequences, and the 4'-PP prosthetic group is covalently linked via a phosphodiester bond to the serine residue. The DSL sequence is present at the amino terminus of helix II, a domain of the protein referred to as the recognition helix and which is responsible for the interaction of ACPs with the enzymes of type II fatty acid synthesis [PMID: 11825906].

This entry represents the phosphopantetheine-binding domain from polyketide synthases. Polyketide synthases are large multidomain proteins involved in the synthesis of secondary metabolites [PMID: 15958783].

GO terms

Biological Process

No terms assigned in this category.

Molecular Function

GO:0031177 phosphopantetheine binding

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.