원핵생물의 세포벽(cell wall of prokaryotic cell)

소개

13-1학기 일반생물학
Topic 정해서 레포트 쓰는 과제때 본인이 직접 작성해 제출한 자료입니다
이 과목은 A+받았으니 믿고 받으셔도 됩니다
(영어수업이라서 영어로 되어있습니다)

원핵생물의 세포벽 구조와 성분에서부터, 그람 염색법, 그람양성균과 음성균,페니실린과 리소자임등
이 주제 관련해서 알아야할것들이 포괄적으로 포함되어있으므로 시험전 개념정리용으로도 좋습니다.
(다만 다시한번, 전문 영어로 되어있음을 주의해주세요 ^^*)

목차

1. basic features of prokaryotic cell (specifically about their cell walls)
2. gram staining
3. gram positive & gram negative cell
4. definition of peptidoglycan
5. structure of peptidoglycan
6. penicillin and lysozyme

본문내용

Almost all of prokaryotic cell is surrounded by firm cell wall. Cell wall helps maintain cell's shape, and protect interior cytoplasm and cell membrane from exterior impulse like osmosis.
Chemically, almost all of cell's cell wall is made of high polymer called 'peptidoglycan'. Peptidoglycan is made of 2 parts. One, peptide part that consists of amino acids. The other, the glycan part that consists of carbohydrates.
2.gram staining
Gram staining (or Gram's method) is a method of differentiating bacterial species into two large groups (Gram-positive and Gram-negative). The name comes from its inventor, Hans Christian Gram.

< 중 략 >

4.definition of peptidoglycan
Peptidoglycan, also known as murein, is a polymer consisting of sugars and amino acids that forms a mesh-like layer outside the plasma membrane of bacteria (but not Archaea), forming the cell wall. The sugar component consists of alternating residues of β-(1,4) linked N-acetylglucosamine and N-acetylmuramic acid. Attached to the N-acetylmuramic acid is a peptide chain of three to five amino acids. The peptide chain can be cross-linked to the peptide chain of another strand forming the 3D mesh-like layer. This 3D stucture is differ in each catecory of bacteria.

참고자료

· google wikipedia - gram staining, peptidoglycan
· google image search- lysozyme, gram staining , peptidoglycan
· http://www.wako-chem.co.jp/siyaku/info/life/talk_lal/tlal-25.pdf(ペプチドグリカン）
· http://www.city.fukuoka.med.or.jp/kensa/ensinbunri/enshin_62.pdf
· http://www.sciencetimes.co.kr/preview/article.do?todo=articleView&atidx=10673&print=Y
· life science 생명 생물의 과학 7판
· campbell biology ninth edition