Contacts of the strand formed by residues 421 - 425 (chain G) in PDB entry 4E2I
Residue contacts within the protein are
derived with the CSU software (Sobolev V., Sorokine A.,
Prilusky J., Abola E.E. and Edelman M. (1999) Automated
analysis of interatomic contacts in proteins.
Bioinformatics, 15, 327-332). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with TYR 421 (chain G).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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420G ARG* 1.3 86.3 - - + +
422G TRP* 1.3 59.0 + - - +
470G VAL* 4.4 3.6 - - + +
472G PHE* 3.7 22.7 - + - -
501G LEU* 3.8 46.9 - - + -
521G PHE* 3.1 25.6 - - - -
522G PRO 2.7 22.6 + - - -
523G PRO* 3.6 15.9 + - + -
524G GLY* 3.1 26.9 - - - -
525G ILE 4.0 0.4 - - - -
526G VAL* 3.6 26.7 - - + -
540G ARG 4.4 10.1 + - - +
541G PHE* 3.4 11.3 - - + -
542G VAL* 2.9 28.9 + - - +
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Residues in contact with TRP 422 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
404G VAL* 3.5 32.5 - - + -
407G ASP* 4.2 13.0 - - + -
408G PHE* 3.9 44.1 - + + -
411G CYS* 3.2 25.8 - - + +
420G ARG 3.3 16.8 - - - -
421G TYR* 1.3 76.7 - - - +
423G LEU* 1.3 60.5 + - - +
424G PHE* 4.3 8.1 - + + -
524G GLY 3.1 7.1 + - - -
525G ILE* 3.6 16.6 - - + +
526G VAL 3.0 25.5 + - - +
541G PHE* 3.7 6.5 - - - -
542G VAL* 4.0 10.9 - - + +
543G LYS* 3.5 44.4 - - + -
545G ILE* 3.5 20.4 - - + -
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Residues in contact with LEU 423 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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422G TRP* 1.3 71.8 - - - +
424G PHE* 1.3 66.3 + - - +
425G LYS* 3.5 17.7 + - + -
526G VAL 3.2 17.3 - - - +
528G MET* 3.5 36.1 - - + -
533G VAL* 4.9 2.0 - - + -
538G GLN* 3.8 20.4 - - - +
541G PHE* 3.5 24.7 - - + -
543G LYS 2.9 17.0 + - - +
544G GLN* 3.5 34.8 - - + +
545G ILE* 2.8 30.1 + - - +
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Residues in contact with PHE 424 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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408G PHE* 6.3 0.2 - + - -
422G TRP* 4.3 11.2 - + + -
423G LEU* 1.3 77.1 - - - +
425G LYS* 1.3 60.1 + - - +
426G GLY 3.6 1.2 + - - -
432G LYS* 3.9 13.8 - - + +
435G LEU* 3.5 33.9 - - + -
436G ALA* 3.8 24.5 - - + -
439G LEU* 3.6 22.9 - - + -
525G ILE* 3.4 25.8 - - + -
526G VAL 3.0 8.9 + - - -
527G THR* 3.5 19.4 - - + -
528G MET 3.3 21.7 + - - +
545G ILE* 3.8 30.7 - - + -
547G PHE* 3.5 20.9 - + + -
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Residues in contact with LYS 425 (chain G).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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423G LEU* 3.4 18.0 + - + -
424G PHE* 1.3 72.8 - - - +
426G GLY* 1.3 59.5 + - - +
528G MET* 3.5 30.7 - - + -
530G GLU* 3.5 26.4 + - + +
531G TYR 3.0 28.1 + - - +
532G SER* 5.0 0.8 - - - +
533G VAL* 4.1 11.3 - - + +
538G GLN* 5.7 0.6 + - - -
544G GLN* 3.3 25.0 + - + +
545G ILE 3.5 3.8 + - - -
546G ASP* 3.1 34.6 - - - +
547G PHE 4.3 0.7 - - - -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il