dna watson and crick double helix 1953. dna function control cell functions store hereditary...
DESCRIPTION
Four nucleotides form DNA Five carbon sugar ( deoxyribose ) phosphate group nitrogen-containing base: adenine, guanine, thymine, cytosineTRANSCRIPT
DNAWATSON AND
CRICK
DOUBLE HELIX
1953
DNA FUNCTION•CONTROL CELL FUNCTIONS•STORE HEREDITARY INSTRUCTIONS•COPY THOSE HEREDITARY INSTRUCTIONS TO A NEW GENERATION•CHANGE FOR EVOLUTION•GIVE INSTRUCTIONS FOR PROTEIN SYNTHESIS
Four nucleotides form DNA
• Five carbon sugar ( deoxyribose )• phosphate group• nitrogen-containing base:adenine, guanine, thymine, cytosine
NITROGENATED BASE
SUGAR(RIBOSE)
PHOSPHATE GROUP
NUCLEOTIDE
A
GUANINE
GENERAL STRUCTURE OF A NEUCLOTIDE
TitleRIBOSE
Title
Title
Title
Title
Title
DEOXYRIBOSE
-
-
TIMINA
GUANINA
PP P -
DNA structure• Two parallel strands of nucleotides
• twisted into a double helix• Adenine -- Thymine• Guanine -- Cytosine• linked by hydrogen bonds
COMPLEMENTARY BASES
THYMINE ADENINE
GUANINE CITOSINE
DNATHE NITROGENATED BASES UNITE BY HYDROGEN BONDS
DNA StructureA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
DNA StructureA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
DNA DUPLICATION
NUCLEUS
DUPLICATION
THE DNA UNWINDSEACH PARENT STRAND IS CONSERVEDA NEW COMPLEMENTARY STRAND IS
ASSEMBLED
adenine always pairs with thymineguanine always pairs with cytosine
DNA DuplicationA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
DNA DuplicationA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
THE DNA UNWINDS
DNA DuplicationA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
THE DNA UNWINDSEach nucleotide templates thecomplementary one of thenew strain.
-T-A-C-G
DNA DuplicationA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
THE DNA UNWINDSEach nucleotide templates thecomplementary new strain.
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
DNA DuplicationA-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
THE DNA UNWINDSEach nucleotide templates thecomplementary new strain.EACH PARENT STRAND IS CONSERVEDA NEW COMPLEMENTARY STRAND IS ASSEMBLED
adenine always pairs with thymineguanine always pairs with cytosine
-T-A-C-G-A-C-T-A-C-G-C-T-G-T-C
A-A-T-T-G-G-C-C-T-T-G-G-A-A-T-T-G-G-C-C-G-G-A-A-C-C-A-A-G-G-
RNA
DNAWATSON AND CRICK
DOUBLE HELIX
1953
CELLULAR CONTROLSACID NUCLETIC STRUCTURE
DNA RNA
DOUBLE chains in all thecells
SIMPLE chain in all the cells
CELLULAR CONTROLGIVES THE MESSAGES
EXPRESION OF THE GENETIC INFORMATION(PROTEIN SYNTHESIS)
NUCLEIC ACIDSSTRUCTURES
DNA RNA
DOUBLE HELIX SINGLE HELIX
store hereditary info protein synthesis
Deoxyribose, Thymine Ribose, Uracil
TRANSCRIPTION TRANSLATIONproteins
DNA DUPLICATION
RNATRANSCRIPTION
NUCLEUS
AC
A
T C G T A AG
C TC
C
TG
TA
G C A T T C
G
AG
G
TRANSCRIPTION
AC
A
T C G T A AG
C AC
C
GG
T
G
CTTACGA
TG
T
CG
TRANSCRIPTION
AC
CC
T C G T A AG
C A
GG
T
G
CTTACGA
TG
T
GC
UUACGA
TRANSCRIPTION
RNA
DNA DUPLICATION
RNATRANSCRIPTION
PROTEINS
TRANSLATION
NUCLEUS
RIBOSOMES
TRANSCRIPTION
TRANSLATION
PROTEIN SYNTHESIS
TYPES OF RNA
"G ives th e m essag e"P ro te in S eq u en c e
m R N AM E S S A N G E R
"B u ild s th e P ro te in "Is 6 0 % o f th e R ib osom e
rR N AR IB O S O M A L
"Tran s la te th e lan g u ag e"A ttac h an am in oac id to a cod on
tR N ATR A N S F E R E N C E
R N ATyp e t it le h e re
TRANSLATION
MET ALA
PHE
GLY
THR
mRNA
AMINOACIDS
GGUU UU
GGCC AA CC CC AA
GGAAAA
GGGG CCUU UU UUGG CC UU AAAA CC
PROTEINA
SECUENCIA DE AMINOACIDOS
MET ALA GLY PHE THR ILE SER
PROTEIN
SEQUENCE OF AMINOACIDS
RNA
DNA
PROTEIN
REPLICATION
TRANSCRIPTION
TRANSLATION