Fig. 1.
Comparison of the primary amino acid sequence of the intracellular juxtamembrane region of rat and human GC-A and GC-B. Red residues are phosphorylation sites that have been identified by mass spectrometry or tryptic phosphopeptide mapping of 32PO4 label enzymes isolated from living cells. The blue residue is a conserved serine and putative phosphorylation site, which was identified based on enzymatic changes associated with phosphomimetic substitutions. Sequences were aligned with Clustal software (version 2.0.1). Numbers correspond to residues from rat GC-A. hGC, human GC; rGC, rat GC.