BR8401049A - Processo para expressar um gene de codificacao de proquimosina em celulas hospedeiras de e.coli.plasmideo de expressao,gene de proquimosina e processo para fazer plasmideos - Google Patents

Processo para expressar um gene de codificacao de proquimosina em celulas hospedeiras de e.coli.plasmideo de expressao,gene de proquimosina e processo para fazer plasmideos

Info

Publication number
BR8401049A
BR8401049A BR8401049A BR8401049A BR8401049A BR 8401049 A BR8401049 A BR 8401049A BR 8401049 A BR8401049 A BR 8401049A BR 8401049 A BR8401049 A BR 8401049A BR 8401049 A BR8401049 A BR 8401049A
Authority
BR
Brazil
Prior art keywords
proquimosine
gene
plasmideos
plasmideo
coli
Prior art date
Application number
BR8401049A
Other languages
English (en)
Portuguese (pt)
Inventor
Teruhiko Beppu
Takeshi Uozumi
Katsuhiko Nishimori
Norio Shimizu
Yoshiyuki Kawaguchi
Makoto Hidaka
Original Assignee
Teruhiko Beppu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Teruhiko Beppu filed Critical Teruhiko Beppu
Publication of BR8401049A publication Critical patent/BR8401049A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/14—Hydrolases (3)
    • C12N9/48—Hydrolases (3) acting on peptide bonds (3.4)
    • C12N9/50—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25)
    • C12N9/64—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue
    • C12N9/6421—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue from mammals
    • C12N9/6478—Aspartic endopeptidases (3.4.23)
    • C12N9/6481—Pepsins (3.4.23.1; 3.4.23.2; 3.4.23.3)
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
    • C07K1/107—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length by chemical modification of precursor peptides
    • C07K1/113—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length by chemical modification of precursor peptides without change of the primary structure
    • C07K1/1136—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length by chemical modification of precursor peptides without change of the primary structure by reversible modification of the secondary, tertiary or quarternary structure, e.g. using denaturating or stabilising agents
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
    • C12N15/09—Recombinant DNA-technology
    • C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
    • C12N15/70—Vectors or expression systems specially adapted for E. coli
    • C12N15/71—Expression systems using regulatory sequences derived from the trp-operon
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
    • C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
    • C12N9/14—Hydrolases (3)
    • C12N9/48—Hydrolases (3) acting on peptide bonds (3.4)
    • C12N9/50—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25)
    • C12N9/64—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue
    • C12N9/6421—Proteinases, e.g. Endopeptidases (3.4.21-3.4.25) derived from animal tissue from mammals
    • C12N9/6478—Aspartic endopeptidases (3.4.23)
    • C12N9/6483—Chymosin (3.4.23.4), i.e. rennin
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Y—ENZYMES
    • C12Y304/00—Hydrolases acting on peptide bonds, i.e. peptidases (3.4)
    • C12Y304/23—Aspartic endopeptidases (3.4.23)
    • C12Y304/23004—Chymosin (3.4.23.4), i.e. rennin
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K2319/00—Fusion polypeptide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Genetics & Genomics (AREA)
  • Wood Science & Technology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Zoology (AREA)
  • Biomedical Technology (AREA)
  • General Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Biotechnology (AREA)
  • Molecular Biology (AREA)
  • Medicinal Chemistry (AREA)
  • Microbiology (AREA)
  • Biophysics (AREA)
  • Plant Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Saccharide Compounds (AREA)
  • Enzymes And Modification Thereof (AREA)
BR8401049A 1983-03-09 1984-03-08 Processo para expressar um gene de codificacao de proquimosina em celulas hospedeiras de e.coli.plasmideo de expressao,gene de proquimosina e processo para fazer plasmideos BR8401049A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58038439A JPS59166086A (ja) 1983-03-09 1983-03-09 新規な発現型プラスミドとそれらを用いて仔牛プロキモシン遺伝子を大腸菌内で発現させる方法

Publications (1)

Publication Number Publication Date
BR8401049A true BR8401049A (pt) 1984-10-16

Family

ID=12525334

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8401049A BR8401049A (pt) 1983-03-09 1984-03-08 Processo para expressar um gene de codificacao de proquimosina em celulas hospedeiras de e.coli.plasmideo de expressao,gene de proquimosina e processo para fazer plasmideos

Country Status (9)

Country Link
EP (1) EP0121775A1 (enExample)
JP (1) JPS59166086A (enExample)
AR (1) AR241795A1 (enExample)
AU (1) AU572827B2 (enExample)
BR (1) BR8401049A (enExample)
DK (1) DK136184A (enExample)
FI (1) FI86886C (enExample)
IE (1) IE57264B1 (enExample)
NZ (1) NZ207414A (enExample)

Families Citing this family (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0123928A3 (en) * 1983-03-31 1986-02-05 Codon Genetic Engineering Laboratories Recombinant dna coding for a polypeptide displaying milk clotting activity
US4721673A (en) * 1983-09-01 1988-01-26 Genex Corporation Recovery and activation process for microbially produced calf prochymosin
JPS60188093A (ja) * 1984-03-09 1985-09-25 Teruhiko Beppu 枯草菌に於ける形質発現プラスミド
JPS60188077A (ja) * 1984-03-09 1985-09-25 Teruhiko Beppu 仔牛プロキモシンcDΝAの全配列を有する新規な発現プラスミド
US5082775A (en) * 1984-05-11 1992-01-21 Berlex Laboratories, Inc. Efficient process for isolating insoluble heterologous protein using non-ionic detergents
US4705848A (en) * 1986-06-02 1987-11-10 International Minerals & Chemical Corp. Isolation of bioactive, monomeric growth hormone
GB2200118A (en) * 1987-01-23 1988-07-27 Allelix Inc Synthetic chymosin-and prochymosin-encoding DNA segments
EP0785273A1 (en) 1990-11-26 1997-07-23 Genetics Institute, Inc. Paired basic amino acid converting enzyme and DNA sequence encoding it
US5629167A (en) 1994-04-19 1997-05-13 Biocine S.P.A. Detection of antibodies against Chlamydia trachomatis pgp3 antigen in patient sera by enzyme-linked immunosorbent assay
BR9813930A (pt) 1997-11-06 2006-12-19 Chiron Spa antìgeno neisserial
ATE446368T1 (de) 1998-01-14 2009-11-15 Novartis Vaccines & Diagnostic Antigene aus neisseria meningitidis
GB9808932D0 (en) 1998-04-27 1998-06-24 Chiron Spa Polyepitope carrier protein
MX343752B (es) 1998-05-01 2016-11-22 Novartis Vaccines & Diagnostics Inc Antigenos de neisseria meningitidis y composiciones que los contienen.
NZ571167A (en) 1999-04-30 2010-05-28 Novartis Vaccines & Diagnostic Fragments from Neisseria protein ORF 953 and their use in medicaments and diagnostic reagents
GB9911683D0 (en) 1999-05-19 1999-07-21 Chiron Spa Antigenic peptides
GB9916529D0 (en) 1999-07-14 1999-09-15 Chiron Spa Antigenic peptides
PT2275551E (pt) 1999-10-29 2015-06-29 Novartis Vaccines & Diagnostic Péptidos antigénicos de neisseria
ES2588917T3 (es) 2000-01-17 2016-11-07 Glaxosmithkline Biologicals Sa Vacuna de VME suplementada contra meningococo
US7939087B2 (en) 2000-10-27 2011-05-10 Novartis Vaccines And Diagnostics, Inc. Nucleic acids and proteins from Streptococcus groups A & B
EP1334182B2 (en) 2000-11-06 2021-03-24 Chr. Hansen A/S Method of producing non-bovine chymosin and use hereof
GB0107661D0 (en) 2001-03-27 2001-05-16 Chiron Spa Staphylococcus aureus
GB0107658D0 (en) 2001-03-27 2001-05-16 Chiron Spa Streptococcus pneumoniae
ES2615362T3 (es) 2001-07-27 2017-06-06 Glaxosmithkline Biologicals Sa Adhesinas de meningococos
ES2386386T3 (es) 2001-12-12 2012-08-20 Novartis Vaccines And Diagnostics S.R.L. Inmunización contra Chlamydia trachomatis
AU2003239865A1 (en) 2002-05-24 2003-12-12 Restoragen Inc. Method for universal enzymatic production of bioactive peptides
AU2003243316A1 (en) 2002-05-24 2003-12-12 Nps Allelix Corp. Method for enzymatic production of glp-2(1-33) and glp-2-(1-34) peptides
CA2506318C (en) 2002-11-15 2011-07-12 Chiron Srl Unexpected surface proteins in neisseria meningitidis
GB0227346D0 (en) 2002-11-22 2002-12-31 Chiron Spa 741
GB0308198D0 (en) 2003-04-09 2003-05-14 Chiron Srl ADP-ribosylating bacterial toxin
EP2228379A1 (en) 2003-04-25 2010-09-15 North Carolina State University Lactobacillus acidophilus nucleic acid sequences encoding cell surface protein homologues and uses therefore
WO2005001057A2 (en) 2003-06-23 2005-01-06 North Carolina State University Lactobacillus acidophilus nucleic acids encoding fructo-oligosaccharide utilization compounds and uses thereof
US7829307B2 (en) 2003-11-21 2010-11-09 Nps Pharmaceuticals, Inc. Production of glucagon-like peptide 2
BRPI0507169A (pt) 2004-02-02 2007-06-26 Ambrx Inc polipeptìdeos do hormÈnio de crescimento humano modificados e seu usos
US7459289B2 (en) 2004-03-08 2008-12-02 North Carolina State University Lactobacillus acidophilus nucleic acid sequences encoding carbohydrate utilization-related proteins and uses therefor
EP1771205B1 (en) 2004-06-18 2016-10-26 Ambrx, Inc. Novel antigen-binding polypeptides and their uses
JP2008507280A (ja) 2004-07-21 2008-03-13 アンブレツクス・インコーポレイテツド 非天然コードアミノ酸を用いた生合成ポリペプチド
CA2594557C (en) 2004-12-22 2016-04-26 Ambrx, Inc. Modified human growth hormone
NZ555308A (en) 2004-12-22 2010-10-29 Ambrx Inc Compositions containing, methods involving, and uses of non-natural amino acids and polypeptides
JP2008537885A (ja) 2005-04-15 2008-10-02 ノース・キャロライナ・ステイト・ユニヴァーシティ 細菌の付着およびストレス耐性を修飾する方法および組成物
EP1951890A4 (en) 2005-11-16 2009-06-24 Ambrx Inc PROCESSES AND COMPOSITIONS WITH NON-NATURAL AMINO ACIDS
GB0524066D0 (en) 2005-11-25 2006-01-04 Chiron Srl 741 ii
DK2054431T3 (da) 2006-06-09 2012-01-02 Novartis Ag Konformere af bakterielle adhæsiner
KR20090060294A (ko) 2006-09-08 2009-06-11 암브룩스, 인코포레이티드 변형된 인간 혈장 폴리펩티드 또는 Fc 스캐폴드 및 그의 용도
CA2682147C (en) 2007-03-30 2017-08-08 Ambrx, Inc. Modified fgf-21 polypeptides and their uses
CA2703830A1 (en) 2007-11-20 2009-05-28 Ambrx, Inc. Modified insulin polypeptides and their uses
SG188143A1 (en) 2008-02-08 2013-03-28 Ambrx Inc Modified leptin polypeptides and their uses
AU2009215364B2 (en) 2008-02-21 2014-09-18 Glaxosmithkline Biologicals S.A. Meningococcal fHBP polypeptides
EP2318029B1 (en) 2008-07-23 2017-11-01 Ambrx, Inc. Modified bovine g-csf polypeptides and their uses
PE20110480A1 (es) 2008-09-26 2011-07-01 Ambrx Inc Microorganismos y vacunas dependientes de replicacion de aminoacidos no naturales
US8278418B2 (en) 2008-09-26 2012-10-02 Ambrx, Inc. Modified animal erythropoietin polypeptides and their uses
WO2011024072A2 (en) 2009-08-27 2011-03-03 Novartis Ag Hybrid polypeptides including meningococcal fhbp sequences
CA2779816A1 (en) 2009-10-27 2011-05-05 Novartis Ag Modified meningococcal fhbp polypeptides
JP2013515081A (ja) 2009-12-21 2013-05-02 アンブルックス,インコーポレイテッド 修飾されているブタのソマトトロピンポリペプチドおよびそれらの使用
EA201290541A1 (ru) 2009-12-21 2013-05-30 Амбркс, Инк. Модифицированные бычьи соматотропиновые полипептиды и их применение
CN103221420A (zh) 2010-05-19 2013-07-24 北卡罗莱纳州立大学 用于递送治疗性肽的组合物和方法
US9567386B2 (en) 2010-08-17 2017-02-14 Ambrx, Inc. Therapeutic uses of modified relaxin polypeptides
PE20140160A1 (es) 2010-08-17 2014-02-08 Ambrx Inc Polipeptidos de relaxina modificados y sus usos
TWI480288B (zh) 2010-09-23 2015-04-11 Lilly Co Eli 牛顆粒細胞群落刺激因子及其變體之調配物
RU2473683C1 (ru) * 2011-12-15 2013-01-27 Общество С Ограниченной Ответственностью "Фармапарк" СПОСОБ ПРОМЫШЛЕННОГО КУЛЬТИВИРОВАНИЯ ШТАММОВ E.coli, ПОЛУЧЕННЫХ НА ОСНОВЕ ШТАММА BL21(DE3), НЕСУЩЕГО ГЕН T7 RNA ПОЛИМЕРАЗЫ ПОД КОНТРОЛЕМ lacUV5 ПРОМОТОРА, С ПОВЫШЕННЫМ СИНТЕЗОМ БИОМАССЫ И ВЫХОДОМ ЦЕЛЕВОГО БЕЛКА В ТЕЛЬЦАХ ВКЛЮЧЕНИЯ
US10767156B2 (en) 2013-10-24 2020-09-08 Yeda Research And Development Co., Ltd. Polynucleotides encoding BREX system polypeptides and methods of using same
MX2017004947A (es) 2014-10-24 2017-06-29 Bristol Myers Squibb Co Polipeptidos del factor de crecimiento de fibroblastos 2 (fgf-21) modificados y usos de los mismos.
US10590426B2 (en) 2016-08-22 2020-03-17 Board Of Trustees Of Michigan State University Genetic control of cell size
IL250479A0 (en) 2017-02-06 2017-03-30 Sorek Rotem Genetically engineered cells expressing a disarm system that confers resistance to phages and methods for their production
SG10201912034UA (en) 2017-02-08 2020-02-27 Bristol Myers Squibb Co Modified relaxin polypeptides comprising a pharmacokinetic enhancer and uses thereof
CN107881162A (zh) * 2017-12-25 2018-04-06 中诺生物科技发展江苏有限公司 一种工业化生产凝乳酶的方法
IL258467A (en) 2018-03-29 2018-07-04 Ilana Kolodkin Gal Methods of disrupting a biofilm and/or preventing formation of same
KR20210057124A (ko) 2018-09-11 2021-05-20 암브룩스, 인코포레이티드 인터류킨-2 폴리펩타이드 접합체 및 그의 용도
WO2020202142A2 (en) 2019-03-31 2020-10-08 Yeda Research And Development Co. Ltd. Anti-viral and anti-tumoral compounds
EP4117732A1 (en) 2020-03-11 2023-01-18 Ambrx, Inc. Interleukin-2 polypeptide conjugates and methods of use thereof
EP4228656A4 (en) 2020-08-18 2024-09-04 Yeda Research and Development Co. Ltd ANTI-VIRAL AND ANTI-TUMOR COMPOUNDS
IL288680A (en) 2021-12-05 2023-07-01 Yeda Res & Dev Genetically modified phages and their use
WO2025215636A1 (en) 2024-04-08 2025-10-16 Yeda Research And Development Co. Ltd. Anti-defense system polypeptides and uses thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4666847A (en) * 1981-01-16 1987-05-19 Collaborative Research, Inc. Recombinant DNA means and method
JPS589687A (ja) * 1981-06-17 1983-01-20 セルテク リミテッド ポリペプチドの生産方法
IE53517B1 (en) * 1981-06-17 1988-12-07 Celltech Ltd Process for the production of a polypeptide
JPS5832896A (ja) * 1981-08-24 1983-02-25 Teruhiko Beppu 複合プラスミド及びそれを含有する微生物
BR8205954A (pt) * 1981-10-14 1983-09-13 Unilever Nv Sequencia de dna,plasmidio recombinante,cultura bacteriana e microorganismos
ZA834095B (en) * 1982-07-01 1984-02-29 Genex Corp Bovine calf chymosin
IE56372B1 (en) * 1982-12-22 1991-07-03 Genentech Inc Microbially produced rennet methods for its production and plasmids used for its production

Also Published As

Publication number Publication date
DK136184A (da) 1984-09-10
FI86886C (fi) 1992-10-26
FI840918L (fi) 1984-09-10
FI840918A0 (fi) 1984-03-07
AU2535784A (en) 1984-09-13
IE57264B1 (en) 1992-07-01
IE840559L (en) 1984-09-09
AU572827B2 (en) 1988-05-19
JPS59166086A (ja) 1984-09-19
AR241795A1 (es) 1992-12-30
DK136184D0 (da) 1984-02-29
NZ207414A (en) 1988-02-29
EP0121775A1 (en) 1984-10-17
FI86886B (fi) 1992-07-15
JPS6240999B2 (enExample) 1987-09-01

Similar Documents

Publication Publication Date Title
ES538613A0 (es) Perfeccionamientos introducidos en cristales para aplicaciones oftalmicas.
BR9105825A (pt) Processo para controlar telefone celular,e telefone celular
BR8402247A (pt) Aplicacao de copolimeros,bem como solucoes de parafinas solidas em hidrocarbonetos
PT80761B (pt) Processo de fabrico de confeite em barras contendo folhado
ES545388A0 (es) Un metodo para facilitar el tratamiento de mensajes dirigidos a nombres logicos en una red de comunicaciones de datos.
BR8405735A (pt) Processo para reativar um catalisador de zeolito do tipo l,processo para reativar um catalisador de refino de zeolito tipo l,e processo para reativacao de um catalisador de reformacao de zelito tipo l.
BR8703197A (pt) Polimero de poliuretana,composicao e processo para preparar o polimero
IL67503A0 (en) Messenger rna,production and use thereof
DE3483971D1 (de) Gate-array, das eine zweirichtungssymmetrie besitzt.
BR8100264A (pt) Aperfeicoamento em pilha eletroquimica vedada, e processo para montar uma pilha eletroqumica vedada
BR8407201A (pt) Processo para produzir laminados covalentemente unidos,estrutura laminada e estrutura trilaminada
BR8406380A (pt) Polimero reticulado,processo para sua producao e suas aplicacoes
GB2146997B (en) Novel bilirubin oxidase, its production and use
DE3788466D1 (de) Mehrfachkarde oder sogennante Tandemkarde mit Übertragungs-, Kardier- und Reinigungszylinder.
IT8449281A0 (it) Perfezionamento nelle catene articolate,in particolare nelle catene flyer
BR8206946A (pt) Composicoes herbicidas,e,processo para produzir 1,3,5-triazinonas,nelas aplicaveis
BR8100488A (pt) Celula e processo de eletrolise
IT8219141A0 (it) Processo di elettrolisi e cella elettrochimica.
BR7906798A (pt) Celula eletrolitica e processo de producao de brometo de hidrogenio na mesma
BR7705796A (pt) Aperfeicoamento em processo e em aparelho para formar,por estiramento,filamentos de vidro
BR8506413A (pt) Processo para a reducao do teor de cloro hidrolisavel em compostos de glicidila
BR8705716A (pt) Estirilariloxi-eter-sulfonatos,processo para sua preparacao e sua aplicacao,bem como combinacoes tenso-ativas
FI844534A7 (fi) Klaemma foer roer, slang eller dylikt.
DE3474546D1 (en) Optically active 4-hydroxy-2-cyclopentenones, and their production
BR8103009A (pt) Processo de preparacao de n-din-propilo-2,6-dinitro 4-trifluormetilanilina com baixo teor de nitrosaminas