PMID- 17140385 OWN - NLM STAT- MEDLINE DCOM- 20070430 LR - 20190917 IS - 0006-2979 (Print) IS - 0006-2979 (Linking) VI - 71 IP - 11 DP - 2006 Nov TI - Mechanism of action of DNA-hydrolyzing antibodies to DNA from blood of patients with systemic lupus erythematosus. PG - 1238-46 AB - Four fractions of IgG antibodies to native DNA (nDNA) were obtained from blood of patients with systemic lupus erythematosus (SLE). These antibodies displayed a thermostable DNA-hydrolyzing activity and were different in affinity for DNA-cellulose and sorption on DEAE-cellulose. DNA-hydrolyzing antibodies to nDNA are metal-dependent endonucleases, cause mainly single-strand breaks in DNA, and are active over a wide range of pH. By atomic-force microscopy, three-dimensional images of DNA complexes with DNA-hydrolyzing antibodies to nDNA were obtained with nanometer resolution, and a nonprocessive action mechanism was shown for the DNase activity of antibodies to nDNA. FAU - Nevzorova, T A AU - Nevzorova TA AD - Kazan State University, 420008 Kazan, Russia. Tatyana.Nevzorova@ksu.ru FAU - Vinter, V G AU - Vinter VG FAU - Konovalova, O A AU - Konovalova OA FAU - Salakhov, M Kh AU - Salakhov MKh LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Biochemistry (Mosc) JT - Biochemistry. Biokhimiia JID - 0376536 RN - 0 (Antibodies, Antinuclear) RN - 0 (DNA, Circular) RN - 0 (DNA-cellulose) RN - 9004-34-6 (Cellulose) RN - 9007-49-2 (DNA) RN - EC 3.1.- (Deoxyribonucleases) SB - IM MH - Adolescent MH - Adult MH - Antibodies, Antinuclear/blood/*pharmacology MH - Antibody Affinity MH - Cellulose/analogs & derivatives/metabolism MH - DNA/metabolism MH - DNA, Circular/metabolism MH - Deoxyribonucleases/*metabolism MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Humans MH - Hydrolysis MH - Lupus Erythematosus, Systemic/blood/*immunology MH - Male MH - Middle Aged EDAT- 2006/12/05 09:00 MHDA- 2007/05/01 09:00 CRDT- 2006/12/05 09:00 PHST- 2006/12/05 09:00 [pubmed] PHST- 2007/05/01 09:00 [medline] PHST- 2006/12/05 09:00 [entrez] AID - BCM71111524 [pii] AID - 10.1134/s0006297906110095 [doi] PST - ppublish SO - Biochemistry (Mosc). 2006 Nov;71(11):1238-46. doi: 10.1134/s0006297906110095.