PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 34944467-5 2021 Using competitive binding experiments between Ca2+ and Zn2+ and QM/MM molecular modeling we conclude that Zn2+ high affinity sites are located in the EF-hand motifs of S100A1. Zinc 55-59 carbonic anhydrase 2 Homo sapiens 46-49 34944467-5 2021 Using competitive binding experiments between Ca2+ and Zn2+ and QM/MM molecular modeling we conclude that Zn2+ high affinity sites are located in the EF-hand motifs of S100A1. Zinc 106-110 carbonic anhydrase 2 Homo sapiens 46-49 34944467-6 2021 In addition, two lower affinity sites can bind Zn2+ even when the EF-hands are saturated by Ca2+, resulting in a 2Ca2+:S100A1:2Zn2+ conformer. Zinc 47-51 carbonic anhydrase 2 Homo sapiens 92-95 34944467-8 2021 We also determined a higher affinity to Ca2+ (KD~0.16 and 24 mum) than was previously reported for S100A1, which would allow this protein to function as a Ca2+/Zn2+-sensor both inside and outside cells, participating in diverse signaling pathways under normal and pathological conditions. Zinc 160-164 carbonic anhydrase 2 Homo sapiens 40-43 34944467-8 2021 We also determined a higher affinity to Ca2+ (KD~0.16 and 24 mum) than was previously reported for S100A1, which would allow this protein to function as a Ca2+/Zn2+-sensor both inside and outside cells, participating in diverse signaling pathways under normal and pathological conditions. Zinc 160-164 carbonic anhydrase 2 Homo sapiens 155-158