DNA binding by proteins with the helix-turn-helix (HTH) motif does not involve a) altered stacking of the DNA at the center of symmetry. b) hydrogen bonds, salt bridges, and van der Waals contacts. c) interactions with base pairs in the major groove of DNA. d) interactions with the sugar-phosphate backbone of DNA.

2059

Calculate the molar extinction coefficient of a solution containing 5 *10-4 g litre-1 of a biomolecule, molecular weight 275 g mol-1, and absorbance 0.75 in a 1.2 cm cuvette.

3096

What are respectively some remarkable functions of hemoglobin?

1007

What are respectively some remarkable functions of albumin?

1042

What are the favourable conditions for formation of cat ions?

991

What is the molecular formula of phosphorous?

1023

define standard feat of formation?

1154

Define lattice energy?

1062

For what purpose ammonal is used?

1085

What is the numeric relation between pyrimidine and purine bases in the dna molecule? Is that relation valid in rna molecules?

1055

Concerning their biological function what is the difference between dna and rna?

1073

What is the tertiary structure of a protein?

1023

What are respectively some remarkable functions of keratin?

998

What is the Chemical formula for Epsom salt?

1169

bane the by products when crude oil is refined by distillation

2079