Library
OurBiochemistry > Library > USMLE Content > Molecular Biology > Lecture notes > DNA Structure and Functions (a quick Revision)
DNA Structure and Functions (a quick Revision)
- February 1, 2020
- Posted by: Namrata Chhabra
- Category: Learning resources Lecture notes Lecture notes Lecture notes Library Molecular Biology Molecular Biology
No Comments

DNA DNA – a polymer of deoxyribonucleotides found in chromosomes, mitochondria, and chloroplasts carries the genetic information. DNA structure a) Primary structure (figure-1) Represents the linear sequence of deoxyribonucleotides linked together by 3′-5′ phosphodiester linkages The informational content of DNA resides in the sequence in which monomers—purine and pyrimidine deoxyribonucleotides—are ordered. The polymer, as depicted,…
10-nm chromatin fiber.
3'-5'phosphodiester linkage
30-nm chromatin fiber.
A-DNA
and Wilkins
B-DNA
Chargaff’s rule
chromosomes
Crick
Deoxyribonucleotides
dna
hydrophobic interaction; Vander Waals forces
major groove
minor groove
noncoding strand
ribonucleic acid (RNA)
Secondary structure
template strand
Watson
Z-DNA
Author:Namrata Chhabra

With over 38 years of experience as a Medical Educator, Medical Biochemist, and Researcher, Dr. Namrata Chhabra has a proven track record of leading and contributing to clinical, academic, and research initiatives that advance medical science and education. She holds an M.B.B.S., an M.D. and Ph.D. in Medical Biochemistry, and a Master's in Health Professions Education (MHPE). She is also a FAIMER Fellow, a prestigious recognition of her excellence in medical education and research.
Currently, she serves as the Associate Dean of Academic Affairs, Chair of the Admissions Committee, and a Professor of Biochemistry at the American University of Antigua College of Medicine (AUACOM). In this role, she oversees the academic quality, curriculum development, faculty development, accreditation processes of the college, and student recruitment. She also teaches and mentors medical students, conducts and supervises biomedical and educational research projects, and publishes and presents her findings in national and international journals and conferences. Additionally, she is the author of three comprehensive textbooks on Medical Biochemistry, which are widely used by medical students and professionals. She is passionate about improving the health outcomes of communities and individuals by fostering a culture of innovation, collaboration, and excellence in medical education and research.