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    首页 分子通 按分子结构分类 有机化合物 有机聚合物 多肽

    多肽

    肽是由两个或两个以上氨基酸通过脱水缩合形成的化合物。最简单的肽由两个氨基酸构成，称为二肽；包含多个氨基酸的肽则被称为多肽。通常情况下，含有50个及以上氨基酸单位的多肽，则归类为蛋白质。肽广泛存在于动物、植物和微生物中，在生物体内的生长发育、细胞分化、大脑活动、肿瘤病变、免疫防御、生殖控制以及抗衰老等方面都扮演着重要角色。

    例如，谷胱甘肽是某些酶的重要辅基，参与体内氧化还原反应；多种激素如催产素、加压素、胰高血糖素及促肾上腺皮质激素等，均属于多肽类，通过调节机体代谢发挥作用。下丘脑分泌的激素调节因子也是由多肽构成，控制着其他内分泌腺释放激素的过程。

    近年来，在高等动物的大脑中发现了具有镇痛作用的脑啡肽（五肽）。许多抗生素如多粘菌素、短杆菌肽等也是肽类物质，具备强大的抗菌能力。此外，多肽是指通过肽键连接形成的一系列氨基酸单位构成的长链结构。一般而言，含有数十个或更少氨基酸单位的多肽称为肽；而更多氨基酸单位组成的则被称为蛋白质。

    在命名时，通常按照从氨基末端（N端）到羧基末端（C端）的顺序书写。如Ser·Gly·Try·Ala·Leu这个五肽由5个氨基酸残基和4个肽键组成，命名为丝氨酰甘氨酰酪氨酰丙氨酰亮氨酸。

    肽广泛存在于动植物组织中，并且其中许多具有特殊生物活性的功能性肽统称为生物活性肽。近年来的研究表明，几乎所有重大生命科学理论——包括免疫防御、生殖控制、肿瘤病变和抗衰防老等——均涉及相关的活性肽，这些理论与临床医学实践密切相关，因此生物活性肽在实际应用中也具有重要价值。

    生物活性肽种类繁多，例如促肾上腺皮质激素为39肽，催产素为九肽，而两种重要的脑啡肽均为五肽。许多抗菌素也是由肽类物质构成的。生长因子则受控于基因，在细胞发育过程中起到调节和控制作用。表皮生长因子含有50个氨基酸残基，神经生长因子则由118个氨基酸组成。

    相关化合物

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— MKC1106-pp, E-psm peptide 318274-84-9 C48H78N12O12
    MKC1106-pp, E-psm peptide
    —— Mast cell degranulating peptide (Vespula lewisii) 72093-21-1 C70H131N19O15
    Mast cell degranulating peptide (Vespula lewisii)
    —— Crabrolin 93207-22-8 C74H130N18O14
    Crabrolin
    —— Pglu-D-phe-trp-ser-tyr-D-ala-leu-arg-pro-gly-NH2 54784-44-0 C59H79N15O13
    Pglu-D-phe-trp-ser-tyr-D-ala-leu-arg-pro-gly-NH2
    —— pentakis(N<sup>γ</sup>-trichloroethoxycarbonyl)colistin A 1013028-76-6 C68H105Cl15N16O23
    pentakis(N<sup>γ</sup>-trichloroethoxycarbonyl)colistin A
    —— pentakis(N<sup>γ</sup>-trichloroethoxycarbonyl)polymyxin B<sub>1</sub> 1013028-75-5 C71H103Cl15N16O23
    pentakis(N<sup>γ</sup>-trichloroethoxycarbonyl)polymyxin B<sub>1</sub>
    —— Gastrin releasing peptide (18-27), phe(25)- 126370-72-7 C53H75N15O11S
    Gastrin releasing peptide (18-27), phe(25)-
    —— glucagon —— C153H225N43O49S
    glucagon
    —— Fmoc-Arg(Pbf)-Glu(OtBu)-Phe-Ile-Lys(Boc)-Trp(Boc)-Leu-Val-Arg(Pbf)-Gly-OH 1048703-66-7 C117H164N18O25S2
    Fmoc-Arg(Pbf)-Glu(OtBu)-Phe-Ile-Lys(Boc)-Trp(Boc)-Leu-Val-Arg(Pbf)-Gly-OH
    —— [Nle11 ]-substance P 57462-42-7 C64H100N18O13
    [Nle11 ]-substance P
    —— (2S)-5-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-1-[(2S)-2-[[(2R)-2-[[(2S)-2-[[2-[[(2S)-2-[[(2S)-1-[(2S,3R)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-amino-3-(4-hydroxyphenyl)propanoyl]amino]-4-methylsulfanylbutanoyl]amino]-5-carbamimidamidopentanoyl]amino]-3-hydroxybutanoyl]pyrrolidine-2-carbonyl]amino]-3-carboxypropanoyl]amino]acetyl]amino]-5-carbamimidamidopentanoyl]amino]-3-phenacylsulfanylpropanoyl]amino]-6-azidohexanoyl]pyrrolidine-2-carbonyl]amino]-3-hydroxybutanoyl]amino]-3-phenylpropanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-5-oxopentanoic acid 1445973-19-2 C90H127N25O24S2
    (2S)-5-amino-2-[[(2S)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-1-[(2S)-2-[[(2R)-2-[[(2S)-2-[[2-[[(2S)-2-[[(2S)-1-[(2S,3R)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-amino-3-(4-hydroxyphenyl)propanoyl]amino]-4-methylsulfanylbutanoyl]amino]-5-carbamimidamidopentanoyl]amino]-3-hydroxybutanoyl]pyrrolidine-2-carbonyl]amino]-3-carboxypropanoyl]amino]acetyl]amino]-5-carbamimidamidopentanoyl]amino]-3-phenacylsulfanylpropanoyl]amino]-6-azidohexanoyl]pyrrolidine-2-carbonyl]amino]-3-hydroxybutanoyl]amino]-3-phenylpropanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-5-oxopentanoic acid
    —— callyaerin A 1243246-46-9 C69H108N14O14
    callyaerin A
    —— callyaerin F 1243246-51-6 C58H83N11O10
    callyaerin F
    —— ACTH (1-24), phe(2)-nle(4)- 97773-00-7 C137H212N40O30
    ACTH (1-24), phe(2)-nle(4)-
    —— L-Serine, glycylglycylglycylglycyl-L-serylglycylglycylglycylglycyl- 192805-56-4 C22H36N10O13
    L-Serine, glycylglycylglycylglycyl-L-serylglycylglycylglycylglycyl-
    —— (4R)-4-[[(2R)-2-[[(4R)-2-[(1R,2R)-1-amino-2-methylbutyl]-4,5-dihydro-1,3-thiazole-4-carbonyl]amino]-4-methylpentanoyl]amino]-5-[[(2R,3R)-1-[[(3S,6R,12R,15S,18R,21R)-3-(2-amino-2-oxoethyl)-18-(3-aminopropyl)-12-benzyl-6-(carboxymethyl)-9-(1H-imidazol-5-ylmethyl)-2,5,8,11,14,17,20-heptaoxo-15-propan-2-yl-1,4,7,10,13,16,19-heptazacyclopentacos-21-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-5-oxopentanoic acid 57762-79-5 C65H101N17O16S
    (4R)-4-[[(2R)-2-[[(4R)-2-[(1R,2R)-1-amino-2-methylbutyl]-4,5-dihydro-1,3-thiazole-4-carbonyl]amino]-4-methylpentanoyl]amino]-5-[[(2R,3R)-1-[[(3S,6R,12R,15S,18R,21R)-3-(2-amino-2-oxoethyl)-18-(3-aminopropyl)-12-benzyl-6-(carboxymethyl)-9-(1H-imidazol-5-ylmethyl)-2,5,8,11,14,17,20-heptaoxo-15-propan-2-yl-1,4,7,10,13,16,19-heptazacyclopentacos-21-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-5-oxopentanoic acid
    —— Sor-c13 1187852-48-7 C72H116N20O19
    Sor-c13
    —— Seractide acetate anhydrous 39294-79-6 C209H312N56O60S
    Seractide acetate anhydrous
    —— (4S)-4-[[2-[[(4R)-2-[(1R,2R)-1-amino-2-methylbutyl]-4,5-dihydro-1,3-thiazole-4-carbonyl]amino]-4-methylpentanoyl]amino]-5-[[1-[[(21R)-3-(2-amino-2-oxoethyl)-18-(3-aminopropyl)-12-benzyl-6-(carboxymethyl)-9-(1H-imidazol-5-ylmethyl)-2,5,8,11,14,17,20-heptaoxo-15-propan-2-yl-1,4,7,10,13,16,19-heptazacyclopentacos-21-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-5-oxopentanoic acid 144572-46-3 C64H99N17O16S
    (4S)-4-[[2-[[(4R)-2-[(1R,2R)-1-amino-2-methylbutyl]-4,5-dihydro-1,3-thiazole-4-carbonyl]amino]-4-methylpentanoyl]amino]-5-[[1-[[(21R)-3-(2-amino-2-oxoethyl)-18-(3-aminopropyl)-12-benzyl-6-(carboxymethyl)-9-(1H-imidazol-5-ylmethyl)-2,5,8,11,14,17,20-heptaoxo-15-propan-2-yl-1,4,7,10,13,16,19-heptazacyclopentacos-21-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-5-oxopentanoic acid
    —— Pl-3994 952295-80-6 C82H127N27O20S2
    Pl-3994
    —— 18-[[(1R)-4-[2-[2-[2-[2-[2-[2-[[(5S)-5-[[(2S)-2-[[(2S)-2-[[(2S)-5-amino-2-[[2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-[[(2S,3R)-2-[[2-[[(2S)-2-[[2-[[(2S)-2-amino-3-(1H-imidazol-4-yl)propanoyl]amino]-2-methylpropanoyl]amino]-4-carboxybutanoyl]amino]acetyl]amino]-3-hydroxybutanoyl]amino]-3-phenylpropanoyl]amino]-3-hydroxybutanoyl]amino]-3-hydroxypropanoyl]amino]-3-carboxypropanoyl]amino]-3-methylbutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxypropanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-methylpentanoyl]amino]-4-carboxybutanoyl]amino]acetyl]amino]-5-oxopentanoyl]amino]propanoyl]amino]propanoyl]amino]-6-[[(2S)-1-[[(2S)-1-[[(2S,3S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-5-carbamimidamido-1-[[2-[[(2S)-5-carbamimidamido-1-(carboxymethylamino)-1-oxopentan-2-yl]amino]-2-oxoethyl]amino]-1-oxopentan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-1-oxopropan-2-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-4-carboxy-1-oxobutan-2-yl]amino]-6-oxohexyl]amino]-2-oxoethoxy]ethoxy]ethylamino]-2-oxoethoxy]ethoxy]ethylamino]-1-carboxy-4-oxobutyl]amino]-18-oxooctadecanoic acid —— C187H291N45O59
    18-[[(1R)-4-[2-[2-[2-[2-[2-[2-[[(5S)-5-[[(2S)-2-[[(2S)-2-[[(2S)-5-amino-2-[[2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-[[(2S,3R)-2-[[2-[[(2S)-2-[[2-[[(2S)-2-amino-3-(1H-imidazol-4-yl)propanoyl]amino]-2-methylpropanoyl]amino]-4-carboxybutanoyl]amino]acetyl]amino]-3-hydroxybutanoyl]amino]-3-phenylpropanoyl]amino]-3-hydroxybutanoyl]amino]-3-hydroxypropanoyl]amino]-3-carboxypropanoyl]amino]-3-methylbutanoyl]amino]-3-hydroxypropanoyl]amino]-3-hydroxypropanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-methylpentanoyl]amino]-4-carboxybutanoyl]amino]acetyl]amino]-5-oxopentanoyl]amino]propanoyl]amino]propanoyl]amino]-6-[[(2S)-1-[[(2S)-1-[[(2S,3S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-5-carbamimidamido-1-[[2-[[(2S)-5-carbamimidamido-1-(carboxymethylamino)-1-oxopentan-2-yl]amino]-2-oxoethyl]amino]-1-oxopentan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-1-oxopropan-2-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-4-carboxy-1-oxobutan-2-yl]amino]-6-oxohexyl]amino]-2-oxoethoxy]ethoxy]ethylamino]-2-oxoethoxy]ethoxy]ethylamino]-1-carboxy-4-oxobutyl]amino]-18-oxooctadecanoic acid
    —— H-Asp-Ala-Glu-Asn-Leu-aIle-Asp-Ser-Phe-Gln-Glu-aIle-Val-OH —— C65H101N15O25
    H-Asp-Ala-Glu-Asn-Leu-aIle-Asp-Ser-Phe-Gln-Glu-aIle-Val-OH
    —— His-His-Ile-Tyr-Leu-Gly-Ala-Val-Asn-Tyr-Ile-Tyr-NH2 2040964-58-5 C71H100N18O16
    His-His-Ile-Tyr-Leu-Gly-Ala-Val-Asn-Tyr-Ile-Tyr-NH2
    —— L-Arginine, L-alanyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-seryl-L-seryl-L-arginyl-L-prolyl-L-glutaminyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-histidylglycyl-L-arginyl-L-arginyl-L-arginyl-L-arginylglycyl-L-arginyl- 58739-75-6 C143H273N87O31
    L-Arginine, L-alanyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-seryl-L-seryl-L-arginyl-L-prolyl-L-glutaminyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-arginyl-L-histidylglycyl-L-arginyl-L-arginyl-L-arginyl-L-arginylglycyl-L-arginyl-
    —— Vasectrin II 63872-85-5 C132H224N44O40
    Vasectrin II
    —— LHRH, Ser(6)- 57521-74-1 C56H77N17O14
    LHRH, Ser(6)-
    —— (D-Phe(sup 2)-pro(sup 3)-D-trp(sup 6))-LHRH 60961-52-6 C61H81N15O13
    (D-Phe(sup 2)-pro(sup 3)-D-trp(sup 6))-LHRH
    —— somatostatin, 5-fluoro-Trp(8)- 66582-76-1 C76H103FN18O19S2
    somatostatin, 5-fluoro-Trp(8)-
    —— insulin, Sar(9A)- 57363-47-0 C254H377N65O74S6
    insulin, Sar(9A)-
    —— Purothionin 9009-72-7 C198H332N68O56S8
    Purothionin
    —— Vasectrin I 64610-22-6 C131H222N44O41
    Vasectrin I
    —— Neurotoxin II, naja naja oxiana 60318-11-8 C283H443N93O92S8
    Neurotoxin II, naja naja oxiana
    —— secretin (5-27), Gln(9) 58886-96-7 C114H197N39O35
    secretin (5-27), Gln(9)
    —— parathyroid hormone (3-34) amide, Nle(8,18)-Nle(34)- 64297-16-1 C177H279N53O48
    parathyroid hormone (3-34) amide, Nle(8,18)-Nle(34)-
    —— Secretin,-tyr(10)- 63220-78-0 C133H218N44O42
    Secretin,-tyr(10)-
    —— Somatostatin, ala(2)-trp(8)-cys(14)- 66610-28-4 C77H106N18O19S2
    Somatostatin, ala(2)-trp(8)-cys(14)-
    —— cobra cytotoxin IV 60488-15-5 C296H479N83O79S10
    cobra cytotoxin IV
    —— 4-[[(2R)-2-[[(4R)-2-[(1S)-1-amino-2-methylpropyl]-4,5-dihydro-1,3-thiazole-4-carbonyl]amino]-4-methylpentanoyl]amino]-5-[[1-[[3-(2-amino-2-oxoethyl)-18-(3-aminopropyl)-12-benzyl-15-butan-2-yl-6-(carboxymethyl)-9-(1H-imidazol-5-ylmethyl)-2,5,8,11,14,17,20-heptaoxo-1,4,7,10,13,16,19-heptazacyclopentacos-21-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-5-oxopentanoic acid 149146-32-7 C65H101N17O16S
    4-[[(2R)-2-[[(4R)-2-[(1S)-1-amino-2-methylpropyl]-4,5-dihydro-1,3-thiazole-4-carbonyl]amino]-4-methylpentanoyl]amino]-5-[[1-[[3-(2-amino-2-oxoethyl)-18-(3-aminopropyl)-12-benzyl-15-butan-2-yl-6-(carboxymethyl)-9-(1H-imidazol-5-ylmethyl)-2,5,8,11,14,17,20-heptaoxo-1,4,7,10,13,16,19-heptazacyclopentacos-21-yl]amino]-3-methyl-1-oxopentan-2-yl]amino]-5-oxopentanoic acid
    —— Benzyloxycarbonyl-(glycyl-prolyl-proline)8-methyl ester 57463-43-1 C105H146N24O27
    Benzyloxycarbonyl-(glycyl-prolyl-proline)8-methyl ester
    —— Endorphin, ala-2- 65041-91-0 C156H252N42O44S
    Endorphin, ala-2-
    —— Cholecystokinin-pancreozymin, tyr(27)- 60383-26-8 C166H262N50O49S3
    Cholecystokinin-pancreozymin, tyr(27)-
    —— TCVADESHAGCEK 321888-30-6 C52H84N16O22S2
    TCVADESHAGCEK
    —— (2R)-2-[[(2S,3R)-2-[[(2R)-2-[[1-[(2R)-2-[[(2R)-2-[[(2S,3S)-3-[(2R,3S,4R,5R,6R)-3-acetamido-5-hydroxy-6-(hydroxymethyl)-4-[(2S,3R,4S,5S,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[2-[[2-[[(2S)-4-carboxy-2-[[4-carboxy-2-[[(2S)-3-hydroxy-2-[[(2S)-5-oxopyrrolidine-2-carbonyl]amino]propanoyl]amino]butanoyl]amino]butanoyl]amino]acetyl]amino]acetyl]amino]-3-hydroxypropanoyl]amino]-4-oxobutanoyl]amino]propanoyl]amino]butanoyl]amino]-6-aminohexanoyl]amino]-6-aminohexanoyl]pyrrolidine-2-carbonyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-3-methylpentanoyl]amino]-4-methylpentanoic acid —— C88H140N20O37
    (2R)-2-[[(2S,3R)-2-[[(2R)-2-[[1-[(2R)-2-[[(2R)-2-[[(2S,3S)-3-[(2R,3S,4R,5R,6R)-3-acetamido-5-hydroxy-6-(hydroxymethyl)-4-[(2S,3R,4S,5S,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[2-[[2-[[(2S)-4-carboxy-2-[[4-carboxy-2-[[(2S)-3-hydroxy-2-[[(2S)-5-oxopyrrolidine-2-carbonyl]amino]propanoyl]amino]butanoyl]amino]butanoyl]amino]acetyl]amino]acetyl]amino]-3-hydroxypropanoyl]amino]-4-oxobutanoyl]amino]propanoyl]amino]butanoyl]amino]-6-aminohexanoyl]amino]-6-aminohexanoyl]pyrrolidine-2-carbonyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-3-methylpentanoyl]amino]-4-methylpentanoic acid
    —— H-Pyr-Pro-Asp-Pro-Asn-Ala-Phe-Tyr-Gly-Leu-Met-NH2 —— C57H79N13O16S
    H-Pyr-Pro-Asp-Pro-Asn-Ala-Phe-Tyr-Gly-Leu-Met-NH2
    —— (4S)-4-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-6-amino-2-[[(2S)-6-amino-2-[[(2S)-1-[(2S)-2-[(2-aminooxyacetyl)amino]propanoyl]pyrrolidine-2-carbonyl]amino]hexanoyl]amino]hexanoyl]amino]hexanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]hexanoyl]amino]-3-methylbutanoyl]amino]-5-[[(2S)-1-amino-3-carboxy-1-oxopropan-2-yl]amino]-5-oxopentanoic acid 388633-56-5 C54H99N19O16
    (4S)-4-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-6-amino-2-[[(2S)-6-amino-2-[[(2S)-1-[(2S)-2-[(2-aminooxyacetyl)amino]propanoyl]pyrrolidine-2-carbonyl]amino]hexanoyl]amino]hexanoyl]amino]hexanoyl]amino]-5-(diaminomethylideneamino)pentanoyl]amino]hexanoyl]amino]-3-methylbutanoyl]amino]-5-[[(2S)-1-amino-3-carboxy-1-oxopropan-2-yl]amino]-5-oxopentanoic acid
    —— DTHKSEIAHR 349086-88-0 C49H80N18O17
    DTHKSEIAHR
    —— FKDLGEEHFK 458533-17-0 C58H84N14O17
    FKDLGEEHFK
    —— HHHHHHIIKIIK 959780-73-5 C72H112N26O13
    HHHHHHIIKIIK
    —— Ac-Leu-Tyr-Arg-Ala-Ser-Ser(PO3H2)-Ser-Pro-Gly-Tyr-Ser-NH2 1186032-46-1 C54H82N15O21P
    Ac-Leu-Tyr-Arg-Ala-Ser-Ser(PO3H2)-Ser-Pro-Gly-Tyr-Ser-NH2
    —— Ac-Leu-Tyr-Arg-Ala-Ser-Ser-Ser-Pro-Gly-Tyr-Ser-NH2 1186032-50-7 C54H81N15O18
    Ac-Leu-Tyr-Arg-Ala-Ser-Ser-Ser-Pro-Gly-Tyr-Ser-NH2