A disulphide bond can be formed between A: Two methionine residues B: Two cysteine residues C: A methionine and a cysteine residue D: All of these
A disulphide bond can be formed between A: Two methionine residues B: Two cysteine residues C: A methionine and a cysteine residue D: All of these
Proteins can be separated electrophoretically on the basis of their relative contents of acidic and basic residues.（）
Proteins can be separated electrophoretically on the basis of their relative contents of acidic and basic residues.（）
Human BRCA1 and BRCA2 are large proteins (1,834 and 3,418 amino acid residues, respectively) that interact with a wide range of other proteins involved in transcription, chromosome maintenance, DNA repair, and control of the cell cycle.
Human BRCA1 and BRCA2 are large proteins (1,834 and 3,418 amino acid residues, respectively) that interact with a wide range of other proteins involved in transcription, chromosome maintenance, DNA repair, and control of the cell cycle.
Histone deacetylases (HDACs) are a group of enzymes closely related to __________. They catalyze acetyl group removal from lysine residues in histones and non-histone proteins, causing transcriptional repression. HDACs are usually components of multiprotein complexes.
Histone deacetylases (HDACs) are a group of enzymes closely related to __________. They catalyze acetyl group removal from lysine residues in histones and non-histone proteins, causing transcriptional repression. HDACs are usually components of multiprotein complexes.
Which following GO evidence codes do belong to computational analysis evidence? 如下哪些GO证据代码属于计算分析证据？ A: sequence orthology (ISO) B: key residues (IKR) C: direct assay (IDA) D: expression pattern (IEP)
Which following GO evidence codes do belong to computational analysis evidence? 如下哪些GO证据代码属于计算分析证据？ A: sequence orthology (ISO) B: key residues (IKR) C: direct assay (IDA) D: expression pattern (IEP)
The correct descriptions about peptide are A: A compound formed of two or more amino acids linked by peptide bonds. B: The amino acids that make up the peptides are residues. C: The peptide chain has amino terminus and carboxyl terminus. D: Oligopeptides less than 10 amino acids don’t have function.
The correct descriptions about peptide are A: A compound formed of two or more amino acids linked by peptide bonds. B: The amino acids that make up the peptides are residues. C: The peptide chain has amino terminus and carboxyl terminus. D: Oligopeptides less than 10 amino acids don’t have function.
Found in the chromatin of all eukaryotic cells, histones have molecular weights between 11,000 and 21,000 and are very rich in the basic amino acids arginine and lysine which together make up about _____ of all the amino acid residues. A: 1/6 B: 1/5 C: 1/4 D: 1/3
Found in the chromatin of all eukaryotic cells, histones have molecular weights between 11,000 and 21,000 and are very rich in the basic amino acids arginine and lysine which together make up about _____ of all the amino acid residues. A: 1/6 B: 1/5 C: 1/4 D: 1/3
The most important crucial question is what causes water pollution A: Natural disasters such as volcano eruptions B: Animal waste C: Residues from storms and floods D: Every day sewage E: Garbage F: Oil spills G: Fossil fuels combistion H: Chemical fertilizers I: Pesticides
The most important crucial question is what causes water pollution A: Natural disasters such as volcano eruptions B: Animal waste C: Residues from storms and floods D: Every day sewage E: Garbage F: Oil spills G: Fossil fuels combistion H: Chemical fertilizers I: Pesticides