Qhov sib txawv tseem ceeb ntawm alpha thiab beta amino acid yog tias alpha amino acids muaj pawg carboxylic acid thiab ib pawg amine ntawm cov pa roj carbon atoms uas nyob ib sab, whereas hauv beta amino acids pawg amine txuas nrog cov pa roj carbon thib ob los ntawm pawg carboxylic acid.
Alpha thiab beta amino acids yog ob hom amino acids. Cov amino acid yog cov organic molecule, thiab nws yog lub tsev thaiv cov proteins. Yog li ntawd, alpha thiab beta amino acid molecules ua raws li cov chav nyob ntawm cov proteins.
Amino Acids yog dab tsi?
Ib qho amino acid yog cov organic molecule, thiab nws yog lub tsev thaiv cov proteins. Ib qho amino acid tseem ceeb muaj ib pawg amine (-NH 2), pawg carboxylic (-COOH), alkyl pawg (-R), thiab hydrogen atom (-H) txuas rau tib yam. nruab nrab carbon atom. Yog li ntawd, cov tshuaj nyob rau hauv cov amino acid yog carbon, hydrogen, oxygen, thiab nitrogen. Qee lub sij hawm, muaj leej faj thiab.
Yog tias pawg amine thiab carboxylic pawg ntawm cov amino acid txuas nrog thawj carbon atom ntawm cov saw hlau, peb hu nws ua alpha amino acid. Feem ntau, lo lus amino acid hais txog alpha amino acids vim lawv muaj ntau. Muaj 22 amino acids koom nrog hauv kev tsim cov protein. Peb hu lawv "proteinogenic amino acids."
Alpha Amino Acids yog dab tsi?
Alpha amino acids yog tsim cov proteins, thiab cov molecules no muaj lawv cov carboxylic acid pawg thiab amine pawg ntawm cov atoms uas nyob ib sab. Peb tuaj yeem txheeb xyuas 20 qhov tshwm sim ntawm alpha amino acids uas muaj txiaj ntsig zoo rau cov hlwb txhawm rau txhawm rau ua ke. Peb tuaj yeem faib cov 20 amino acids no rau hauv pawg raws li cov saw alkyl hauv cov amino acid molecule. Cov pawg no suav nrog cov tsis muaj polar side chains, polar side chains, acidic side chains, thiab cov saw tseem ceeb hauv alpha amino acids.
Daim duab 01: Alpha Amino Acids
Piv txwv ntawm alpha amino acids uas tsis muaj polar side chains muaj xws li glycine, alanine, valine, leucine, isoleucine, methionine, proline, phenylalanine, thiab tryptophan. Piv txwv rau alpha amino acids nrog polar side chains muaj xws li asparagine, glutamine, serine, threonine, tyrosine, thiab cysteine. Cov amino acids no feem ntau koom nrog hydrogen bonding. Piv txwv rau alpha amino acids nrog acidic sab chains muaj xws li aspartic acid thiab glutamic acid, thaum piv txwv rau alpha amino acids nrog cov hauv paus chains muaj xws li lysine, arginine, thiab histidine. Cov amino acids no feem ntau tshwm sim hauv qhov chaw nquag ntawm cov enzymes thiab koom nrog hydrogen bonding thiab hauv acid / base reactivity.
Beta Amino Acids yog dab tsi?
Beta amino acids yog tsim cov proteins, thiab cov molecules no muaj carboxylic acid pawg thiab amine pawg ntawm cov pa roj carbon thib ob.
Daim duab 02: Beta Amino Acid
Hauv lwm lo lus, beta amino acid muaj nws pawg amine cais los ntawm pawg carboxylic acid los ntawm cov pa roj carbon atom, tsis zoo li hauv alpha amino acids uas ob pawg ua haujlwm nyob rau ntawm cov pa roj carbon atoms. Qhov thib ob carbon atom no tseem muaj npe hu ua beta carbon, ua rau nws raug hu ua beta amino acid.
Qhov txawv ntawm Alpha thiab Beta Amino Acid yog dab tsi?
Amino acids yog lub tsev tsim cov proteins. Muaj ob hom loj li alpha amino acids thiab beta amino acids thiab alpha amino acids yog cov ntaub ntawv ntau tshaj. Qhov sib txawv tseem ceeb ntawm alpha thiab beta amino acid yog tias alpha amino acids muaj carboxylic acid pawg thiab amine pawg ntawm cov pa roj carbon atoms uas nyob ib sab whereas nyob rau hauv beta amino acids pawg amine yog txuas rau cov pa roj carbon thib ob ntawm pawg carboxylic acid.
Cov hauv qab no infographic tabulates qhov sib txawv ntawm alpha thiab beta amino acid.
Summary – Alpha vs Beta Amino Acid
Amino acids yog lub tsev tsim cov proteins. Muaj ob hom loj xws li alpha amino acids thiab beta amino acids. Qhov sib txawv tseem ceeb ntawm alpha thiab beta amino acid yog tias alpha amino acids muaj carboxylic acid pawg thiab amine pawg ntawm cov pa roj carbon atoms uas nyob ib sab, hos nyob rau hauv beta amino acids pawg amine txuas nrog cov pa roj carbon thib ob los ntawm pawg carboxylic acid. Tsis tas li ntawd, alpha-amino acids yog cov feem ntau hom.
