Nerd4Lyfe

Nerd4Lyfe

Tuesday, 28 February 2012

The birth of a PROTEIN

-The making of the protein begins with the info in the DNA
-Genes describe how to make proteins by putting the correct amino acids into a long chain
- RNA strand is made from unzipping DNA strand and making a copy, which can be sent outside of the nucleus - messenger RNA
- The mRNA is sent to a ribosome, which assembles  the proteins, by translating the genetic information.
-mRNA contains information in sets of 3 nucleotides. Each set is a code for a specific amino acid
-the specific amino acids are then brought in and joined toghether by the tRNA.
-the tRNA matches up the correct amino acids, just as DNA match up
- Ribosomes will keep reading and stringing toghether the amino acids to make a protein.

PROTEIN/LIPID/SECRETION

-The Endoplasmic Reticulum produces many of the cells proteins and lipids (proteins make on the Rough ER, which contain ribosomes), these proteins and lipids travel along the smooth and rough ER, which change the modify the molecules
- To transport them to their needed locations, vesicles bound off form the ER
- The vessicle delivers it's cargo to the golgi apparatus, by fusing with the golgi
-The golgi then modifies and packages the proteins/lipids
- Vesicles then move the protein/lipds out of the cell by fusing with the cell membrane and releasing their contents outside.

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