Casparian strip membrane protein (IPR006459)

Short name: CASP/CASPL

Overlapping homologous superfamilies


Family relationships



This family consists of CASP and CASP-like proteins. In vascular plants Casparian strips span the cell wall of adjacent endodermal cells to form a tight junction that blocks extracellular diffusion [PMID: 23940370]. Casparian Strip Membrane Domain Proteins (CASPs) are four-membrane-span proteins that recruit the lignin polymerisation machinery necessary for the deposition of Casparian strips in the endodermis. CASP-like proteins (CASPLs) are found in all major divisions of land plants as well as in green algae. In Arabidopsis, CASPLs show specific expression in a variety of cell types [PMID: 24920445].

Contributing signatures

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