Peptide

Mayelana Wikipedia
A tetrapeptide (example Val-Gly-Ser-Ala) with green marked amino end (L-valine) and
blue marked carboxyl end (L-alanine)

Amashumi esipeptayidi kuyinkambu enkulu yezizinto zasemanzini ezinolunye ngamakhubedu ezibandakanya ngezibophezelo zepeptide.[1][2] Umphandela wewu-polipeptayidi ngumqondo ongakhokheli, ozungeza ngendlela ejwayelekile yokuzikhandakhazela.[3] Amashumi esandulela ukuya ezingamakhulu abaphozi basekhaya ngabathengisi ngokumkhawulela yabadlali bezindawo.[4] Izindulela ezifanayo nezikhulu ezingaphezu kuka-20 zasepeptayidi zingamagama okuthola umkhawulo, kuzobanzima zibe ngabavimba, izindulela ezintathu, nesindulela ye-tetrapeptide.

Amashumi esipeptayidi avela phansi kwezingozi ezinamkhawulo, izingebi zemvelo, izingebi zezinye, izingebi zezinsimbi, kanye nezingebi ezinjalo.[5]

Amashumi esandulela aveza ngomsebenzi wezezinto zasemanzini ozinikwa ngendlela yobudlelwane, kumele athambise ku-ligand ezindaweni ezifanayo njengama-coenzyme kanye ne-cofactor, kubalwa phansi komphandela wasepeptayidi okanye izindawo ezintathu ze-macromolecule njengoba kusayiniswa kwemvelo njengoba kusayiniswa ngeDNA kanye neRNA]], okanye kuzinkulungwane zezinkulungwane ezinjalo.[6]

Amino acids okufanele bakhombisele emazingeni amashumi esipeptayidi azithengiselwa ngemvume.ezilwanyana. I-umlozi lusebenza ekuzikhandeni kwezinsimbi zokudlela.[7] Zonke izipeptayidi nje ezifana namashumi esandulela azinayo i-N-terminal (umlando wesinye isithakazelo) kanye ne-C-terminal (umlando wosinye isithakazelo) owukuphela kokuqala kwepeptayidi (njengokuboniswa kwetetrapeptide esihogweni).

Izinhlelo zokubhala[hlela | Hlela umthombo]

  1. Hamley, I. W. (September 2020). introduction to Peptide Science. Wiley. ISBN 9781119698173.
  2. Template:Lehninger4th
  3. Saladin, K. (13 January 2011). Anatomy & physiology: the unity of form and function (6th ed.). McGraw-Hill. p. 67. ISBN 9780073378251.
  4. Template:GoldBookRef.
  5. "Peptide". Kulandwe ngomhlaka 22 May 2023.
  6. Ardejani, Maziar S.; Orner, Brendan P. (2013-05-03). "Obey the Peptide Assembly Rules". Science 340 (6132): 561–562. Bibcode 2013Sci...340..561A. doi:10.1126/science.1237708. ISSN 0036-8075. PMID 23641105. 
  7. Template:GoldBookRef.