Translation Stage
A look at what is currently available on eBay
Transcription and Translation Question?
What are the stages of translation and transcription? And a short summary of each stage. Thank you!
The overall plan is expressed:
transcription translation
DNA ----------} RNA ---------} proteins
Transcription of DNA into RNA
A.The Three Classes of RNA
1.Messenger RNA (mRNA) carries the "blueprint" for protein assembly to the ribosome.
2.Ribosomal RNA (rRNA) combines with proteins to form ribosomes upon which polypeptides are assembled.
3.Transfer RNA (tRNA) brings the correct amino acid to the ribosome and pairs up with an mRNA code for that amino acid.
B.How RNA Is Assembled
1.RNA differs from DNA in two ways:
a.RNA uses ribose sugar, not deoxyribose.
b.RNA bases are A, G, C, and URACIL (U).
2.Transcription differs from replication in three ways:
a.Only one region of one DNA strand is used as a template.
b.RNA polymerase is used instead of DNA polymerase.
c.RNA is single stranded; DNA is double.
3.Transcription begins when RNA polymerase binds to a promoter region (a base sequence at the start of a gene) and then moves along to the end of a gene; an RNA transcript is the result.
C.Finishing Touches on the mRNA Transcripts
1.Newly formed mRNA is an unfinished molecule, not yet ready for use.
2.mRNA transcripts are modified before leaving the nucleus.
a.The 5' end is capped with a special nucleotide that may serve as a "start" signal for translation.
b.A "poly-A tail" of about 100-200 molecules of adenylic acid is added to the 3' end.
c.Noncoding portions (introns) are snipped out, and actual coding regions (exons) are spliced together to produce the mature transcript.
Stages of Translation
A.In initiation, a complex forms in this sequence: initiator tRNA + small ribosomal subunit + mRNA + large ribosomal subunit.
B.In elongation, a start codon on mRNA defines the reading frame; a series of tRNAs deliver amino acids in sequence by codon-anticodon matching; a peptide bond joins each amino acid to the next in sequence.
C.In termination, a stop codon is reached and the polypeptide chain is released into the cytoplasm or enters the cytomembrane system for further processing.
D.The three steps just outlined can be repeated many times on the same mRNA because several ribosomes may be moving along the mRNA at the same time (polysome).
Items recently purchased from this site
Newport TCB200-600-10um 1-Axis Linear Translation Stage, DCI Translation Stage DC-66R with Motor DCI 1024-02, KENSINGTON LABORATORIES 8500-6X8 TRANSLATION STAGE X Y, Daedal 4955-10 6 inch Translation Stage with Imperial Digital Readout, Aerotech AVS113 ART315-G216 Translation Stage, Kensington XYZ Stage - translation table, Newport Motorized Vertical Translation Stage UZM80PE.1, H-RHFF Line Tool XYZ Linear Translation Stage, w HR-1 Starrett Micrometers, Newport UTM50PP1HL Motorized Linear Translation Stage, Newport UTM50PP1HL Motorized Linear Translation Stage, H-RH Line Tool XYZ Linear Translation Stage, w HR-1 Starrett Micrometers, Newport UTM100PP1HL Motorized Linear Translation Stage, Klinger/Microcontrole UT100-150 Translation Stage, Klinger UT100.25PP Motorized Linear Translation Stage, Newport M-UTM50PP1HL Motorized Linear Translation Stage, H-RH Line Tool XYZ Linear Translation Stage, w Standard Starrett Micrometers, Newport Linear Translation Stage ESP (UTM / UTS Series), Newport Z047A UTM50CC1HL Linear Translation Stage , Klinger MT160 Motorized Translation Stage , AEROTECH ATS100-100-U LINEAR TRANSLATION STAGE NEWPORT, Newport Z047A Linear Translation Stage, Newport UTM50CC1HL and UTM100CC1HL Linear Translation Stage, NEWPORT MVN Precision Vertical Linear Translation Stage,0.79"Travel MVN120 *NIB*, Line Tool xyz FineFeed translation stage A RHFF Newport, Linetool Model A-RH Translation Stage, Melles Griot X-Y 2-axis Translation Stage, Micro-Controle / Klinger Vertical Translation Stage 120 x 80 mm Platform 55 x 11, Manual Vertical Translation Stages, travel 120mm, Max. , Micro-Controle Newport XYZ Precision Translation Stage with Tilt and Rotation #1, Micro-Controle Newport XYZ Precision Translation Stage with Tilt and Rotation #2, N-RH Line Tool XYZ Linear Translation Stage , Newport MVN80 Vertical Translation Stage / Lab Jack w/ Micrometer, LINE TOOL CO K MODEL SLIDE TRANSLATION STAGE , VACUUM CHAMBER UHV CONFLAT LINEAR MOTION TRANSLATION BELLOWS STAGE Z-AXIS MDC, A-RH Line Tool 3-Axis Linear Translation Stage, A-LH Line Tool 3-Axis Linear Translation Stage, Newport Z047A UE404CC Linear Actuator Translation Stage, Micro-Controle XYZ Linear Translation Stage, Klinger Micro-Controle XY Linear Translation Stage , Motorized Precision Vertical Translation Stages, XY& Theta translation stage with vacuum chuck, Newport Model 461 XYZ translation stage, with 3 micrometers , Newport 460 XYZ Translation Stage +3mics Save$420 NICE ~50%Off List $869 NICE, Newport Research Corp (NRC) 416 Vertical Translation Stage, Line Tool Co. Linear Translation Stage X -Y Axis 3"x 3", Melles Griot 07TEZ204 Vertical Translation Stage, Micro Slides SK150A-200-0022 XYZ Axis Linear Translation Stage, Thorlabs 2-Axis Linear Translation Stage MT1 w/ Micrometers (Retails $600), C Line Tool X-Z Linear Translation Stage, Mitutoyo/Starett Dual Micrometer Linear Translation Stage, Klinger Newport Motorized Linear Translation Stage, MICRO-CONTROLE NEWPORT LINEAR TRANSLATION X STAGE SM25, Melles Griot X-Y Linear Translation Stage Sub-Micron, Manual Vertical Translation Stages, travel 5mm , Manual Vertical Translation Stages, travel 25mm, Max. , Manual Vertical Translation Stages, travel 13mm, Max. , Manual Vertical Translation Stages, travel 13mm, Max. , Newport NRC Model 400 XY Linear Translation Stage Table, New Focus 9064 Optical Linear Translation Stage 2-Axis XY Micrometer Screw , PI Mdl: M-111 High-Resolution Micro-Translation Stage , Oriel / Newport 16201 Linear Translation Stage (NEW) w/ Aperture, Micrometer, NEWPORT 430 LINEAR TRANSLATION STAGE W SM-25 MICROMETER, Melles Griot Precision XY Linear Translation Stage 2-Axis w/ Micrometers, Klinger Motorized Linear Translation Stage 75mm Travel ~ Laser Optical, Newport M-426/426A Precision Linear Translation Stage w/ Micrometer - Metric, Melles Griot Single Axis Translation Stage, Newport SDS(1st gen) XY stainless Translation Stage, Sigma Koki 2 axis XY Translation or Laser Stage with position screws, NEW, XY Translation Stage Daedal positioning Newport linear w/ 2 mics List $710, Line Tool Co Model D Precision Liner Translation Stage, MICRO-CONTROLE NEWPORT LINEAR TRANSLATION X STAGE, Newport 460P Linear Translation Stage.-Metric , Newport micro-controle Translation Stage +25mm w/ Differential fine tune Mic, NEW FOCUS 9061-COM Translation Stage 25mm (New in the Box), Melles Griot Tez Precision Vertical Translation Stage, New Focus 9064 Triple Drive X Axis Translation Stage 1.1" Travel w/9353 Mic, Newport Precision Linear Translation Stage M-425, Model M-425 Newport Model M-425 Precision Linear Translation Stage Precision Lin, NEW NEWPORT 9061-COM LOW PROFILE GOTHIC ARCH TRANSLATION STAGE STAINLESS STEEL, NEW Newport New Focus 9061-COM Gothic-Arch Linear Translation Stage 6.5mm Travel, Thorlabs PT1 Precision Linear Translation Stage 1" Travel, Oriel / Newport Precision Linear Translation Stage 0.5", Oriel / Newport Precision Linear Translation Stage 0.5", ThorLabs MT1 2.4 inch Translation Stage, ThorLabs MT1 2.4 inch Translation Stage, 3 NEWPORT FAST-DRIVE DOVETAIL LINEAR TRANSLATION STAGES TSX-1D AND TSX-1A, XZ Linear Translation Stage, XZ Linear Translation stage, Thorlabs MT1 1/2" translation stage, NEW in Unopened box, Newport DS40 Dovetail 2-Axis Linear Optical Translation Stage XY Screw Actuator, Newport DS40 Dovetail 2-Axis Linear Optical Translation Stage XY Screw Actuator, Newport Translation Stage 4"x3"+1"Adj. Save 50%NICE , Thorlabs PT1 Translation Stage w/mic 1in Linear travel List$264 Save$115 Newport, Micro Controle 1-D Translation Stage 40mm Micrometer, 420 Newport Linear Translation Stage, Line Tool Co. E Linear Translation Stage X Axis, ThorLabs MT1 1/2" Translation Stage, New in Sealed Box, Thorlabs PT1 X Linear Translation Stage with Micrometer, 1", Newport Linear Positioning Translation Stage +25mm (1in) Mic NICE ,
December 5th, 2009 in
Uncategorized | tags:
dictionary,
français,
job,
jobs,
language,
reference,
translation,
translation stage,
translation stage motorized,
translation stage newport,
translation stage thorlabs,
translation stages,
translation stages biology
