Lecture 6 Biochemistry

Lecture 6 Biochemistry - Biochemistry 2 Proteins Structure...

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Biochemistry- 2 Proteins Structure Function Nucleic acids Definition Nitrogenous bases Aldopentoses Nucleic acids DNA structure RNA structure Function Lipids Definition Fats Function
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Proteins Structure Each type of protein molecule in its natural environment folds into a unique 3D structure called the native conformation defined by primary, secondary, tertiary and perhaps quaternary levels of organization. The most important determinant of protein structure is the influence of the amino acid sequence (primary structure ). Secondary structure : Regular, repeating structural elements that are close together in the linear sequence of the protein. The most common are alpha helices and beta sheets. Tertiary structure : Complete three dimensional arrangement in space. Quaternary structure : Association of two or more polypeptide chains to form a multisubunit protein molecule. Myoglobin Ricin Hemoglobin
Image of page 2
α -Helix: it is a rod-like structure formed by a tightly coiled polypeptide backbone.
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
β -Sheet: Is composed of fully extended polypeptide chains linked together through hydrogen bonding between adjacent strands of the sheet.
Image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern