| 氨基 | ān jī | amino / amino group |  |
| 氨基酸 | ān jī suān | amino acid | |
| 多肽 | duō tài | polypeptide, chain of amino acids linked by peptide bonds CO-NH, a component of protein | |
| 赖氨酸 | lài ān suān | lysine (Lys), an essential amino acid | |
| 蛋氨酸 | dàn ān suān | methionine (Met), an essential amino acid | |
| 谷氨酸 | gǔ ān suān | glutamic acid (Glu), an amino acid | |
| 酪氨酸 | lào ān suān | tyrosine (Tyr), an amino acid | |
| 丙氨酸 | bǐng ān suān | alanine (Ala), an amino acid | |
| 半胱氨酸 | bàn guāng ān suān | cysteine (Cys), an amino acid / mercaptoethyl amine | |
| 甘氨酸 | gān ān suān | glycine (Gly), an amino acid | |
| 精氨酸 | jīng ān suān | argnine (Arg), an essential amino acid | |
| 色氨酸 | sè ān suān | tryptophan (Trp), an essential amino acid | |
| 丝氨酸 | sī ān suān | serine (Ser), an amino acid | |
| 苏氨酸 | sū ān suān | threonine (Thr), an essential amino acid | |
| 亮氨酸 | liàng ān suān | leucine (Leu), an essential amino acid | |
| 组氨酸 | zǔ ān suān | histidine (His), an essential amino acid | |
| 异亮氨酸 | yì liàng ān suān | isoleucine (Ile), an essential amino acid | |
| 肽 |  tài | peptide (two or more amino acids linked by peptide bonds CO-NH) | |
| 肽键 | tài jiàn | peptide bond CO-NH / bond in protein between carboxyl radical and amino radical | |
| 侧链 | cè liàn | side chain (used in classifying amino acids) | |
| 天冬氨酸 | tiān dōng ān suān | aspartic acid (Asp), an amino acid | |
| 天冬酰胺 | tiān dōng xiān àn | asparagine (Asn), an amino acid | |
| 甲硫氨酸 | jiǎ liú ān suān | methionine (Met), an essential amino acid | |
| 缩多氨酸 | suō duō ān suān | polypeptide, a chain of amino acids linked by peptide bonds CO-NH, a component of protein / same as 多肽[duo1 tai4] | |
| 缩氨酸 | suō ān suān | peptide (two or more amino acids linked by peptide bonds CO-NH) / same as 肽[tai4] | |
| 缬氨酸 | xié ān suān | valine (Val), an essential amino acid | |
| 肽聚糖 | tài jù táng | peptidoglycan (PG) or murein (polymer of sugars and amino acids forming cell wall) | |
| 肽链 | tài liàn | peptide chain (chain of amino acids making up protein) | |
| 胺基酸 | àn jī suān | amino acid / also written 氨基酸 | |
| 脯氨酸 | pú ān suān | proline (Pro), an amino acid | |
| 苯丙氨酸 | běn bǐng ān suān | phenylalanine (Phe), an essential amino acid | |
| 谷氨酰胺 | gǔ ān xiān àn | glutamine (Gln), an amino acid | |
| 转氨基酶 | zhuǎn ān jī méi | amino transferase (enzyme) | |
