1a] Name a residue in this sequence predicted to bind (or have attached to it) a

Question

1a] Name a residue in this sequence predicted to bind (or have attached to it) a polysaccharide.

1b] Name a positively charged (at physiological pH) residue within a transmembrane helix

1c] Identify A tryptophan or tyrosine at the C-terminal end of a transmembrane helix

1d] Name a residue in an extra-cellular part of the receptor

Sequence and secondary structure for 4COF chain A KLLKGYDIRL RPDFGGPPVC VGMNIDIASI S TT HHHHHHHHH HHHTT TIS TITTSS EE EEEEEEEEEE ETGQSVNDPG NHSEVKETVD DMVSEVNMDY TLTMYFOQYW RDKRL AYSGI PINLTLDNRV ADOLWVPDTY EEEETTITEE EEEEEEEEEE E GGG SS S EEE GGG GGGS EE 51 LNDKKSEVH GVIVKNRMIR LHPDGTVLYG LRITTTAACM MDLRRYPLDE ETTEEEEEE SBS SEEEE E TTSEEEEE EEEEEEEE 101 QNCTLEIESY GYTTDDIEFY WRGGDKAVTG VERIELPOPS IVEHRIVSRN EEEEEEEEES S TTTEEEE ETTGGGSEE GGG SSEE EEEEEEEEEE 151 VVEATGAYPR LSLSFRLKRN ÍGYF1LQTYM PS?LÍTILSW VSFWINYDAS EEETTEEEEE EEEEEEEEE THHHHHHTHH HHHHHHHHHH GGGGS IT H 201 251 AARVALGITT VLTMITINTH LRETLPKIPY VKAIDMYTMG CEVEVELALL 301 EYAFVNYIFF SQPARAAAID RWSRIVEPFT FSLENLVYWL YYVNGATETS 351 QVAPA

Explanation / Answer

1a. Residue can be asparagine, serine and threonine as these are able to attach with polysacchatide to form glycoproteins.

1b . Lysine, arginine and histidine are three positively charged residue.

1c. Tyrosine present at 345 and 346 position are present at C-terminal end

1d. Lysine , isoleucine are the residue found in extracellular part of the receptor.

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