PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3786144-7 1986 The spectroscopically detectable structural perturbations caused by replacement of phosphate oxygen with sulfur were mostly localized within the GsA moiety, and were greater for the Rp configuration wherein sulfur is oriented into the major groove of the B-helix. Phosphates 83-92 GNAS complex locus Homo sapiens 145-148