Contacts of the strand formed by residues 335 - 340 (chain B) in PDB entry 3IQL
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 GLN 335 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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351A PRO* 3.6 29.4 - - - +
309B LEU* 3.7 13.7 - - + +
331B MET* 3.0 8.5 - - - +
332B LEU 3.0 34.3 + - - +
333B HIS* 4.4 7.0 + - + +
334B GLY* 1.3 78.4 - - - +
336B SER* 1.3 63.6 + - - +
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Residues in contact with SER 336 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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320A THR 4.1 8.9 + - - -
321A ASN* 5.5 4.8 + - - -
307B GLY 4.5 1.7 - - - +
308B GLU 4.8 4.0 - - - +
309B LEU* 4.1 8.0 - - - +
330B GLY 3.3 8.7 - - - -
331B MET* 3.4 25.3 - - - +
334B GLY 4.5 0.7 + - - -
335B GLN* 1.3 79.0 + - - +
337B GLY* 1.3 59.8 + - - +
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Residues in contact with GLY 337 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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307B GLY 3.2 13.7 - - - -
309B LEU* 3.7 16.2 - - - +
329B GLU* 3.3 8.6 - - - +
330B GLY 3.0 30.7 + - - +
336B SER* 1.3 77.5 - - - +
338B PHE* 1.3 62.3 + - - -
339B PHE* 3.9 1.0 - - - -
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Residues in contact with PHE 338 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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301B PHE* 3.9 0.5 - - - -
305B ASN* 5.5 2.5 - - + -
306B GLU 3.5 18.2 - - - -
307B GLY* 3.0 39.2 + - - -
308B GLU* 3.3 31.7 - - + +
309B LEU 2.9 18.5 + - - -
323B ILE* 3.8 23.3 - - + -
327B TRP* 3.3 40.8 - + + -
328B TYR 3.1 13.2 - - - +
329B GLU* 4.2 4.0 - - + -
337B GLY* 1.3 73.2 - - - -
339B PHE* 1.3 62.9 + - - +
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Residues in contact with PHE 339 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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295B CYS* 4.1 9.0 - - - -
301B PHE* 3.9 2.2 - - + -
309B LEU* 3.8 16.2 - - + +
311B PHE* 3.5 25.1 - + + -
317B ILE* 3.8 27.4 - - + -
319B LEU* 4.2 6.1 - - + -
327B TRP* 3.3 12.0 - - - -
328B TYR* 2.9 60.3 + + + +
329B GLU 3.8 2.7 - - - -
330B GLY* 3.6 23.8 - - - -
337B GLY 3.9 5.6 - - - -
338B PHE* 1.3 80.6 - - - +
340B PRO* 1.3 81.4 - - + +
344B VAL* 3.7 21.3 - - + -
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Residues in contact with PRO 340 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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301B PHE* 3.7 33.9 - - + -
326B ASN 3.5 9.4 - - - +
327B TRP* 3.9 15.7 - - + -
339B PHE* 1.3 99.3 - - + +
341B ILE* 1.3 64.2 + - - +
342B ASN* 3.3 20.9 - - - +
343B TYR* 3.0 37.2 + - + +
344B VAL* 4.1 1.7 + - - +
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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