1 | Asp-99 donates a hydrogen bond not to tyr-14 but to the steroid directly in the catalytic mechanism of Delta(5)-3-ketosteroid isomerase from Pseudomonas putida biotype B Choi, G; Ha, NC; Kim, SW; Kim, DH; Park, S; Oh, Byung-Ha; Choi, KY, BIOCHEMISTRY, v.39, no.5, pp.903 - 909, 2000-02 |
2 | Contribution of conserved amino acids at the dimeric interface to the conformational stability and the structural integrity of the active site in ketosteroid isomerase from Pseudomonas putida biotype B Nam, Gyu Hyun; Kim, Do-Hyung; Ha, Nam-Chul; Jang, Do Soo; Yun, Young Sung; Hong, Bee Hak; Oh, Byung-Ha; et al, JOURNAL OF BIOCHEMISTRY, v.134, no.1, pp.101 - 110, 2003 |
3 | Contribution of the hydrogen-bond network involving a tyrosine triad in the active site to the structure and function of a highly proficient ketosteroid isomerase from Pseudomonas putida biotype B Kim, DH; Jang, DS; Nam, GH; Choi, G; Kim, JS; Ha, NC; Kim, MS; et al, BIOCHEMISTRY, v.39, no.16, pp.4581 - 4589, 2000-04 |
4 | Crystal structure and enzyme mechanism of Delta(5)-3-ketosteroid isomerase from Pseudomonas testosteroni Cho, HS; Choi, G; Choi, KY; Oh, Byung-Ha, BIOCHEMISTRY, v.37, no.23, pp.8325 - 8330, 1998-06 |
5 | Crystal structure of Delta(5)-3-ketosteroid isomerase from Pseudomonas testosteroni in complex with equilenin settles the correct hydrogen bonding scheme for transition state stabilization Cho, Hyun-Soo; Ha, Nam-Chul; Choi, Gildon; Kim, Hyun-Ju; Lee, Donghan; Oh, Kyung Seok; Kim, Kwang S.; et al, JOURNAL OF BIOLOGICAL CHEMISTRY, v.274, no.46, pp.32863 - 32868, 1999-11 |
6 | Crystallization and preliminary X-ray crystallographic studies of ketosteroid isomerase from Pseudomonas putida biotype B Oh, Byung-Ha; Kim, Suhng Wook; Ryu, Seong-Eon; Kim, Sang-Soo; Yoon, Mi-Kyung; Choi, Kwan Yong, PROTEINS-STRUCTURE FUNCTION AND GENETICS, v.24, no.4, pp.514 - 515, 1996-04 |
7 | Detection of large pK(alpha) perturbations of an inhibitor and a catalytic group at an enzyme active site, a mechanistic basis for catalytic power of many enzymes Ha, Nam-Chul; Kim, Min-Sung; Lee, Weontae; Choi, Kwan Yong; Oh, Byung-Ha, JOURNAL OF BIOLOGICAL CHEMISTRY, v.275, no.52, pp.41100 - 41106, 2000-12 |
8 | High-resolution crystal structures of Delta(5)-3-ketosteroid isomerase with and without a reaction intermediate analogue Kim, SW; Cha, SS; Cho, HS; Kim, JS; Ha, HC; Cho, MJ; Joo, S; et al, BIOCHEMISTRY, v.36, no.46, pp.14030 - 14036, 1997-11 |
9 | Maintenance of alpha-helical structures by phenyl rings in the active-site tyrosine triad contributes to catalysis and stability of ketosteroid isomerase from Pseudomonas putida biotype B Nam, GH; Jang, DS; Cha, SS; Lee, TH; Kim, DH; Hong, BH; Yun, YS; et al, BIOCHEMISTRY, v.40, no.45, pp.13529 - 13537, 2001-11 |
10 | Mutational analysis of the three cysteines and active-site aspartic acid 103 of ketosteroid isomerase from Pseudomonas putida biotype B Kim, Suhng Wook; Joo, Soyoung; Choi, Gildon; Cho, Hyun-Soo; Oh, Byung-Ha; Choi, Kwan Yong, JOURNAL OF BACTERIOLOGY, v.179, no.24, pp.7742 - 7747, 1997-01 |
11 | Origin of the different pH activity profile in two homologous ketosteroid isomerases Yun, Young Sung; Lee, Tae-Hee; Nam, Gyu Hyun; Jang, Do Soo; Shin, Sejeong; Oh, Byung-Ha; Choi, Kwan Yong, JOURNAL OF BIOLOGICAL CHEMISTRY, v.278, no.30, pp.28229 - 28236, 2003-07 |
12 | Pseudoreversion of the catalytic activity of Y14F by the additional substitution(s) of tyrosine with phenylalanine in the hydrogen bond network of Delta(5)-3-ketosteroid isomerase from Pseudomonas putida Biotype B Choi, G; Ha, NC; Kim, MS; Hong, BH; Oh, Byung-Ha; Choi, KY, BIOCHEMISTRY, v.40, pp.6828 - 6835, 2001-01 |
13 | Role of catalytic residues in enzymatic mechanisms of homologous ketosteroid isomerases Oh, KS; Cha, SS; Kim, DH; Cho, HS; Ha, NC; Choi, G; Lee, JY; et al, BIOCHEMISTRY, v.39, no.45, pp.13891 - 13896, 2000-11 |
14 | Roles of active site aromatic residues in catalysis by ketosteroid isomerase from Pseudomonas putida biotype B Kim, DH; Nam, GH; Jang, DS; Choi, G; Joo, S; Kim, JS; Oh, Byung-Ha; et al, BIOCHEMISTRY, v.38, no.42, pp.13810 - 13819, 1999-10 |
15 | Structural double-mutant cycle analysis of a hydrogen bond network in ketosteroid isomerase from Pseudomonas putida biotype B Jang, Do Soo; Cha, Hyung Jin; Cha, Sun-Shin; Hong, Bee Hak; Ha, Nam-Chul; Lee, Ja Young; Oh, Byung-Ha; et al, BIOCHEMICAL JOURNAL, v.382, pp.967 - 973, 2004-09 |
16 | Structure and enzymology of Delta(5)-3-ketosteroid isomerase Ha, Nam-Chul; Choi, Gildon; Choi, Kwan Yong; Oh, Byung-Ha, CURRENT OPINION IN STRUCTURAL BIOLOGY, v.11, no.6, pp.674 - 678, 2001-12 |