PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7756988-0 1994 The structures of RNase A complexed with 3"-CMP and d(CpA): active site conformation and conserved water molecules. Water 99-104 carboxypeptidase A1 Homo sapiens 54-57 11093266-9 2001 In the case of one of the substrates, CpA, we have also identified the presence of a water molecule that invariantly bridges the B2 base with the protein. Water 85-90 carboxypeptidase A1 Homo sapiens 38-41 9801832-2 1998 The crystal structure reveals that both the amide carbonyl oxygen and the terminal amino nitrogen of Gly-Tyr coordinate to the active site zinc ion of CPA in a bidentate fashion, whereby the zinc-bound water molecule is displaced by the amino group. Water 202-207 carboxypeptidase A1 Homo sapiens 151-154 9801832-3 1998 As to the catalytic mechanism of CPA, it is generally believed that while in the cases of ester substrates the carboxylate of Glu-270 functions as the nucleophile which attacks the scissile carbonyl carbon (anhydride pathway), in the case of peptide substrates the zinc-bound water molecule attacks the scissile peptide bond (general base pathway). Water 276-281 carboxypeptidase A1 Homo sapiens 33-36 3422451-7 1988 The structure of the CPA-hydrated BBP complex provides support for a promoted-water hydrolytic mechanism, although it is not certain whether the enzyme has actually participated in the hydration reaction at the ketone carbonyl of BBP. Water 78-83 carboxypeptidase A1 Homo sapiens 21-24 2026592-7 1991 A solvent deuterium isotope effect of 1.39 +/- 0.02 was noted for inactivation by 2 and one of 1.31 +/- 0.01 for its hydrolysis, in keeping with a proposed promoted water hydrolytic pathway for peptide hydrolysis by CPA (Christanson, D. W., and Lipscomb, W. N. (1989) Acc. Water 165-170 carboxypeptidase A1 Homo sapiens 216-219 24649826-8 2014 RESULTS: For equilibration with CPA, our algorithm predicts an optimal first step consisting of exposure to a solution containing only water and CPA. Water 135-140 carboxypeptidase A1 Homo sapiens 32-35 23526979-5 2013 Simulation results suggest that cell nuclear plays a significant role in cryo-dehydration and would affect water/CPA concentration gradient inside the cell. Water 107-112 carboxypeptidase A1 Homo sapiens 113-116 20141508-5 2006 This is achieved either by directly coordinating to the metal ion found in some metalloenzymes (CAs, CPA, STS), usually by means of one of the nitrogen atoms present in the sulfamide motif, or, as in the case of the cyclic sulfamides, acting as HIV protease inhibitors interacting with the catalytically critical aspartic acid residues of the active site by means of an oxygen atom belonging to the HN-SO(2)-NH motif that substitutes a catalytically essential water molecule. Water 460-465 carboxypeptidase A1 Homo sapiens 101-104 32864834-4 2020 Meanwhile, the water solubility of CP-beta-CD is improved dramatically to 816 mg mL-1 , which is 440 times as that of unmodified beta-CD. Water 15-20 carboxypeptidase A1 Homo sapiens 35-42 32864834-8 2020 This work suggests that the water soluble CP-beta-CD with excellent cell internalization efficiency has a potential application prospect in the field of drug delivery. Water 28-33 carboxypeptidase A1 Homo sapiens 42-49