obsolete cell adhesive protein binding involved in SA cardiac muscle cell-atrial cardiac muscle cell communication (obsolete GO:0086085)
OBSOLETE. Binding to a protein or protein complex that results in the connection of an SA cardiomyocyte with an atrial cardiomyocyte and contributes to the communication between the two cells.
cell adhesive protein binding involved in SA cardiomyocyte-atrial cardiomyocyte communication
exact